Here's my new to me '69
Captain, This is one good-looking Barracuda! So few convertibles around...
You should get tons of compilments on this one; she's beautiful!!!
Thanks for posting it.
Show your slant 6 a body!
- Thread starter Mopar70Dart
- Start date
-
Captain, This is one good-looking Barracuda! So few convertibles around...
You should get tons of compilments on this one; she's beautiful!!!
Thanks for posting it.
slantsixdan
=..=
Capt_Lunker, that Baccaruda is sharp! Yer not gonna do anything damn-fool with it, like put in two extra cylinders and move half the cylinders to the wrong side of the engine bay…right?
dennday67
Well-Known Member
My 68 valiant
capt_lunker, that baccaruda is sharp! Yer not gonna do anything damn-fool with it, like put in two extra cylinders and move half the cylinders to the wrong side of the engine bay right?
x 4!!!!
My 68 valiant
Nice engine compartment!!!! How about a picture of the rest of the car??
dennday67
Well-Known Member
Were in the middle of the body work.
here is my build to see how the car has come so far.
http://www.forabodiesonly.com/mopar/showthread.php?t=193405
here is my build to see how the car has come so far.
http://www.forabodiesonly.com/mopar/showthread.php?t=193405
capt_lunker
Well-Known Member
Thank you very much. Much appreciated sir
Lookin' good!Were in the middle of the body work.
here is my build to see how the car has come so far.
http://www.forabodiesonly.com/mopar/showthread.php?t=193405
Really like those wheels...
Keep us posted!!! Love those 3rd generation A Bodies!!!!
capt_lunker
Well-Known Member
Capt_Lunker, that Baccaruda is sharp! Yer not gonna do anything damn-fool with it, like put in two extra cylinders and move half the cylinders to the wrong side of the engine bay right?
Well, now that you mention it......I do have a good 360 for it, and thought about maybe turning it into a 4 speed car as well and sticking the original motor on a stand and putting it away in the garage.
Not positive though, haven't really made up my mind
I'd advise against it... LOL!
Here's a turbocharged slant six on gasoline; no nitrous......
[ame="http://www.youtube.com/watch?v=7QzUfV8iTpQ"]Turbo Slant Six 10.74 @ 127 mph 7-19-10 - YouTube[/ame]
Do you need to go faster than 127 in the quarter? :blob:
Engine swaps are expensive and a whole lot of trouble...
You can get 400 reliable hp from a turbocharged slant six...
Just something to think about...
Here are some photos of the one we're building.
http://tinyurl.com/c9mp84y
Johnny Dart
Well-Known Member
Excellent idea !!!!
capt_lunker
Well-Known Member
I'd certainly be interested in a price comparison between a good turbo motor like that, all the plumbing that goes along with it, the tranny and the rear end as compared to a new 360 with Edelbrock heads. Also keeping in mind, I'll have less than $1500.oo invested in the 360.
I'd certainly be interested in a price comparison between a good turbo motor like that, all the plumbing that goes along with it, the tranny and the rear end as compared to a new 360 with Edelbrock heads. Also keeping in mind, I'll have less than $1500.oo invested in the 360.
I don't understand your question. A set of Edelbrock aluminum heads, alone, will cost you virtually $1500 and you've bought nothing else.
Or, maybe you're not going to run Edelbrock heads on your motor.
I didn't undertstand what you meant with that statement, "I'll have less than $1500.oo invested in the 360. "
That /6 motor in the video makes over 500 hp. A normally-aspirated small block that will make 500 hp will need some good (read, expensive) parts, and will be high rpm motor, requiring deep gearing, and if it's an automatic, a high-stall converter to make it work. It will need a decent set of headers and some other-than tock compression-ratio pistons to get the job done.
A $1500 360 can't be expected to run anything like the /6 in the video, but he has a lot more money than $1500 in that motor, too.
I put together an admittedly loose comparison between doing this performance increase exercise both ways; It is in TWO posts above this. Maybe it will have some information that can help you make a decision... hope so.
You pays your money and you takes your choice... :cheers:
Here's some food for thought....
PART ONE:
Comparison of turbo Slant Six 500 HP build vs.
500 HP 318/340/360 small block build
The following is written in reference to the 225 motor. The 170 is a different kettle of fish.
It would seem that slant 6 motors (remember, this is a 225 thread) were built (though, not intentionally,) to be force-fed air and fuel.
Whether it's done with a supercharger, nitrous oxide, or a turbo, it once-and-for-all, makes an end run around the built-in breathing problem that slant sixes suffer from birth. Because of their small bores, they can never have the kind of breathing that will deliver horsepower in the 1.75 hp-per-cubic-inch range. Not with that original, cast-iron, 2-valve head, at least.
The engine is rpm limited because of the long (4-1/8") stroke, so it's never going to deliver the goods at 8,000 rpm. That's the rpm where most small-block Chevys that are really "built" seem to make big power. I'm talking the small-displacement, short stroke models.
RPM? Forget it.
Because of the fact that the original plans for the slant 6 included an aluminum block (and, the fact that that aluminum isn't as strong as cast iron,) the basic specifications for the slant 6 block were robust, to say the least; they had to be... aluminum needs more mass to be as strong as it needs to be for reliability, than cast iron. Well, the engine that went on to live in Mopars of various descriptions for many years, turned out to be cast iron.
But, the changes in the cast iron version, from the aluminum parameters, were minimal.
That meant that the resulting engine was an unusually strong critter, not unlike a Diesel, in its basic construction.
A forged steel crank with mains the size of a 426 Hemi’s made for an equally-strong bottom end.
Along the way, someone a whole lot smarter than I am, realized that what this all meant was, you could boost the s**t out of this little motor without hurting it. Boost = performance increases!
Tom Wolfe and Ryan Peterson built the prototypes for the engine that is in the '64 Valiant that Freddie and I plan to run. We bald-facedly copied their lead, and we are HOPEFULLY going to run within a second of their cars. There are only minimal differences in their "recipe" from ours. But, they did it first; we're just copy-cats.
In this diatribe, I am going to try to justify why anyone would want to go this route, ($$$$$$$$$$$,) and perhaps point out a few reasons why it might not be such a good idea, after all...
There are (at least) two kinds of people out there; those who just want to go fast, and those who want to go fast and prove something in the process.
Anybody can stick a big engine into a light car with easily predictable results: It's gonna be F-A-S-T!!! Those 440+ cubic inch A Bodies are hard to outrun... and, with good reason! Ma made it pretty easy to drop an RB engine into an A-Body, and beyond getting it to hook, the problems in getting it to go fast are not actually what you'd call "insurmountable." Whoever said, "There's no substitute for cubic inches," said a mouthful!
Senor' Schumacher has made the task of installing a big engine into a Dart or Duster a lot easier, with his motor mounts and custom-fit big-engine-in-a-in small car headers. The appeal is almost overwhelming, if you love "speed."
Some folks, though, look at that operation and say, "Ho Hum... It SHOULD be fast; big block in a small car.... so what?"
Some of those detractors want to produce a fun car with a smaller engine, but not TOO small.. There are the 318/340/360 guys who don't want the hassles that go with the installation of a third-member-breaking big block, but would still like to trim a few Corvettes.
To them, a small-block is the answer; they don't want to mess with a slant six, because 1. They don't like the way they sound, and 2. it's hard to build one that will outrun most Corvettes. They probably have never SEEN an 11-second slant six car. Or, a 12-second one; thirteen second slant six cars are not even that plentiful.... so, they know that they can stick a set of headers on a 340, raise the compression to 11.5:1, go with any one of a hundred different solid lifter cams, and presto," a low 12-second car that will embarrass most street driven anything, Corvettes, included.
Enter the slant 6 turbo, the type of engine that most regular-guy Mopar enthusiasts think is an oddball, weird combination that yeah, may be pretty fast, but has to be expensive!!! Right? I mean, you don't get 2+ horsepower per cubic inch out of a slant six without a ton of costly, cutting-edge technology!
Well, that's just not true.
Let me point out what ~I~ have found out about this turbo six business that has made me wonder whether it might not be actually CHEAPER than building an equal-power small block. Especially, if you already HAVE the /6, but will have to buy a V8.
Here are a few ways that the turbo slant six can be a cheaper alternative to an equally-powerful small block.
For purposes of comparison, let's compare two 500 horsepower engines; one normally-aspirated 360, with time-honored, normal hop-up mods to produce 500 flywheel HP and a turbocharged slant six with equal power.
Lets start with acquiring a rebuildable engine "core."
People give away slant 6's all the time. The one we are attempting to build was, in fact, given to us. It was on its way to the dump, if we didn’t want it. “Free” is always good…
That scenario is also possible with small blocks, but not as easy... and virtually impossible to find a "free" rebuildable 340. But, you don't HAVE to start with a 340; it can even be a 318... but that won’t be as easy. A 500-horsepower 318 is not hard to imagine, but probably would need some pretty good heads, and 12-1 compression. It would also need to be rpm capable, to a large degree. (7,000?)
Not so hard with a 360, but they are not as much in abundance for free, I think. Could be wrong about that. More like $150 for a rebuildable "core."
Advantage, slant 6.
There is more of everything to buy for 8 cylinders compared with 6. Pistons, valves, bearings, rings, valve springs... retainers, keepers...
Advantage, slant 6
The driveability of a turbo slant 6 is not much different from a stocker, in that the main thing(s) that destroy driveability, are radical cams with a fast, ragged idle, and big ports that allow the fuel to fall out of suspension (at low rpm) in the ports, due to low velocities brought on by the size of the ports. The turbo slant six cams don't have much more duration than a stock one, and the ports, even in ported heads, aren't very big.
Advantage, slant 6.
The slant six's that have been turbocharged with high-boost (over 20 pounds,) don't seem to like rpm's and don't NEED rpm's to deliver the goods. Tom Wolfe and Ryan Peterson the two examples I am citing here, both contend that their engines have a de-facto red line of about 5,500 rpm. With such a low red line, the reciprocating stresses, even with a 1-and-an-eithth-inch, stroke, are low enough that these engines will never fail due to bearing loads brought on by excessive piston speed, That is MY opinion; nothing more. Making 500 horsepower from a normally-aspirated small block is going to require that you spin it, probably fast enough to put engine life in jeopardy, if you do it very often.
Advantage, slant six (my opinion)
Because of the relatively low rpm operation of the turbo slant six, the valve train can remain, with stock pushrods and rocker arms, due to the low valve spring pressures required. The money you DON'T have to spend on needle bearing, rollerized rockers, special, heavy-duty pushrods and roller lifters is money saved. Cam life is enhanced because the low-rpm redline make possible the use of mild valve springs that are easy on cams...
Advantage, slant six.
The rear axle ratios in the two quickest A Body turbo slant six cars that I have seen evidence of, are 2.76:1 for the strip AND for the street. The turbo motors are weird, in that the car slows down with normally-"steep" rear gears, such as the 4.56:1 units often found in small-block cars. The turbo motor seems to make more power (not unlike a "fuel" motor) when it is "held back" and not allowed to increase rpm quickly. The significance if this is, the turbo motors also can use the same ratio for highway driving AND drag strip action. The small block "built" motor wouldn't think much of a 2.76:1 rear end on the drag strip, nor would it perform up to its potential, with a 4.56:1 on the highway. So, if you build a small block and it does double duty, you really need two sets of gears; one for the drag strip and one of the highway. No problem; you can change third members in a couple of hours (or, less.) But, they don't give away 8.75" A-Body housings these days, and neither is it cheap to buy and maintain two sets of third members, with different ratios; one for racing, blah, blah, blah...
The turbo slant six car can easily make do with a "one-ratio-fits-all" rear end. A late model, A Body 8.25" rear end from a junk yard will be lots cheaper (or, one out of an Aspen/Volare car) and will come with highway (and drag strip) gears already in it.... and is plenty strong for this application. More money saved.
Advantage, slant six
Because a high-stall converter is neither desirable nor necessary, turbo slant six converters are going to be cheaper than a 4,000-5,000-rpm unit that would be probably necessary for a wildly-cammed small block. Once again, the street driveability issue comes to light. The tighter slant six converter would not create as much heat as a high-stall, small block unit would, in daily driving.
Advantage, slant six
End of part one...
PART ONE:
Comparison of turbo Slant Six 500 HP build vs.
500 HP 318/340/360 small block build
The following is written in reference to the 225 motor. The 170 is a different kettle of fish.
It would seem that slant 6 motors (remember, this is a 225 thread) were built (though, not intentionally,) to be force-fed air and fuel.
Whether it's done with a supercharger, nitrous oxide, or a turbo, it once-and-for-all, makes an end run around the built-in breathing problem that slant sixes suffer from birth. Because of their small bores, they can never have the kind of breathing that will deliver horsepower in the 1.75 hp-per-cubic-inch range. Not with that original, cast-iron, 2-valve head, at least.
The engine is rpm limited because of the long (4-1/8") stroke, so it's never going to deliver the goods at 8,000 rpm. That's the rpm where most small-block Chevys that are really "built" seem to make big power. I'm talking the small-displacement, short stroke models.
RPM? Forget it.
Because of the fact that the original plans for the slant 6 included an aluminum block (and, the fact that that aluminum isn't as strong as cast iron,) the basic specifications for the slant 6 block were robust, to say the least; they had to be... aluminum needs more mass to be as strong as it needs to be for reliability, than cast iron. Well, the engine that went on to live in Mopars of various descriptions for many years, turned out to be cast iron.
But, the changes in the cast iron version, from the aluminum parameters, were minimal.
That meant that the resulting engine was an unusually strong critter, not unlike a Diesel, in its basic construction.
A forged steel crank with mains the size of a 426 Hemi’s made for an equally-strong bottom end.
Along the way, someone a whole lot smarter than I am, realized that what this all meant was, you could boost the s**t out of this little motor without hurting it. Boost = performance increases!
Tom Wolfe and Ryan Peterson built the prototypes for the engine that is in the '64 Valiant that Freddie and I plan to run. We bald-facedly copied their lead, and we are HOPEFULLY going to run within a second of their cars. There are only minimal differences in their "recipe" from ours. But, they did it first; we're just copy-cats.
In this diatribe, I am going to try to justify why anyone would want to go this route, ($$$$$$$$$$$,) and perhaps point out a few reasons why it might not be such a good idea, after all...
There are (at least) two kinds of people out there; those who just want to go fast, and those who want to go fast and prove something in the process.
Anybody can stick a big engine into a light car with easily predictable results: It's gonna be F-A-S-T!!! Those 440+ cubic inch A Bodies are hard to outrun... and, with good reason! Ma made it pretty easy to drop an RB engine into an A-Body, and beyond getting it to hook, the problems in getting it to go fast are not actually what you'd call "insurmountable." Whoever said, "There's no substitute for cubic inches," said a mouthful!
Senor' Schumacher has made the task of installing a big engine into a Dart or Duster a lot easier, with his motor mounts and custom-fit big-engine-in-a-in small car headers. The appeal is almost overwhelming, if you love "speed."
Some folks, though, look at that operation and say, "Ho Hum... It SHOULD be fast; big block in a small car.... so what?"
Some of those detractors want to produce a fun car with a smaller engine, but not TOO small.. There are the 318/340/360 guys who don't want the hassles that go with the installation of a third-member-breaking big block, but would still like to trim a few Corvettes.
To them, a small-block is the answer; they don't want to mess with a slant six, because 1. They don't like the way they sound, and 2. it's hard to build one that will outrun most Corvettes. They probably have never SEEN an 11-second slant six car. Or, a 12-second one; thirteen second slant six cars are not even that plentiful.... so, they know that they can stick a set of headers on a 340, raise the compression to 11.5:1, go with any one of a hundred different solid lifter cams, and presto," a low 12-second car that will embarrass most street driven anything, Corvettes, included.
Enter the slant 6 turbo, the type of engine that most regular-guy Mopar enthusiasts think is an oddball, weird combination that yeah, may be pretty fast, but has to be expensive!!! Right? I mean, you don't get 2+ horsepower per cubic inch out of a slant six without a ton of costly, cutting-edge technology!
Well, that's just not true.
Let me point out what ~I~ have found out about this turbo six business that has made me wonder whether it might not be actually CHEAPER than building an equal-power small block. Especially, if you already HAVE the /6, but will have to buy a V8.
Here are a few ways that the turbo slant six can be a cheaper alternative to an equally-powerful small block.
For purposes of comparison, let's compare two 500 horsepower engines; one normally-aspirated 360, with time-honored, normal hop-up mods to produce 500 flywheel HP and a turbocharged slant six with equal power.
Lets start with acquiring a rebuildable engine "core."
People give away slant 6's all the time. The one we are attempting to build was, in fact, given to us. It was on its way to the dump, if we didn’t want it. “Free” is always good…
That scenario is also possible with small blocks, but not as easy... and virtually impossible to find a "free" rebuildable 340. But, you don't HAVE to start with a 340; it can even be a 318... but that won’t be as easy. A 500-horsepower 318 is not hard to imagine, but probably would need some pretty good heads, and 12-1 compression. It would also need to be rpm capable, to a large degree. (7,000?)
Not so hard with a 360, but they are not as much in abundance for free, I think. Could be wrong about that. More like $150 for a rebuildable "core."
Advantage, slant 6.
There is more of everything to buy for 8 cylinders compared with 6. Pistons, valves, bearings, rings, valve springs... retainers, keepers...
Advantage, slant 6
The driveability of a turbo slant 6 is not much different from a stocker, in that the main thing(s) that destroy driveability, are radical cams with a fast, ragged idle, and big ports that allow the fuel to fall out of suspension (at low rpm) in the ports, due to low velocities brought on by the size of the ports. The turbo slant six cams don't have much more duration than a stock one, and the ports, even in ported heads, aren't very big.
Advantage, slant 6.
The slant six's that have been turbocharged with high-boost (over 20 pounds,) don't seem to like rpm's and don't NEED rpm's to deliver the goods. Tom Wolfe and Ryan Peterson the two examples I am citing here, both contend that their engines have a de-facto red line of about 5,500 rpm. With such a low red line, the reciprocating stresses, even with a 1-and-an-eithth-inch, stroke, are low enough that these engines will never fail due to bearing loads brought on by excessive piston speed, That is MY opinion; nothing more. Making 500 horsepower from a normally-aspirated small block is going to require that you spin it, probably fast enough to put engine life in jeopardy, if you do it very often.
Advantage, slant six (my opinion)
Because of the relatively low rpm operation of the turbo slant six, the valve train can remain, with stock pushrods and rocker arms, due to the low valve spring pressures required. The money you DON'T have to spend on needle bearing, rollerized rockers, special, heavy-duty pushrods and roller lifters is money saved. Cam life is enhanced because the low-rpm redline make possible the use of mild valve springs that are easy on cams...
Advantage, slant six.
The rear axle ratios in the two quickest A Body turbo slant six cars that I have seen evidence of, are 2.76:1 for the strip AND for the street. The turbo motors are weird, in that the car slows down with normally-"steep" rear gears, such as the 4.56:1 units often found in small-block cars. The turbo motor seems to make more power (not unlike a "fuel" motor) when it is "held back" and not allowed to increase rpm quickly. The significance if this is, the turbo motors also can use the same ratio for highway driving AND drag strip action. The small block "built" motor wouldn't think much of a 2.76:1 rear end on the drag strip, nor would it perform up to its potential, with a 4.56:1 on the highway. So, if you build a small block and it does double duty, you really need two sets of gears; one for the drag strip and one of the highway. No problem; you can change third members in a couple of hours (or, less.) But, they don't give away 8.75" A-Body housings these days, and neither is it cheap to buy and maintain two sets of third members, with different ratios; one for racing, blah, blah, blah...
The turbo slant six car can easily make do with a "one-ratio-fits-all" rear end. A late model, A Body 8.25" rear end from a junk yard will be lots cheaper (or, one out of an Aspen/Volare car) and will come with highway (and drag strip) gears already in it.... and is plenty strong for this application. More money saved.
Advantage, slant six
Because a high-stall converter is neither desirable nor necessary, turbo slant six converters are going to be cheaper than a 4,000-5,000-rpm unit that would be probably necessary for a wildly-cammed small block. Once again, the street driveability issue comes to light. The tighter slant six converter would not create as much heat as a high-stall, small block unit would, in daily driving.
Advantage, slant six
End of part one...
PART TWO:
I BELIEVE that a turbocharged slant six motor is about 80-100 pounds
lighter than an iron small block. Can't prove that, but I'd bet on it.
Advantage slant six
The "bling" factor at shows might be of interest to some. A nice-looking small block has a LOT of competition at car shows and usually needs to have something really special, in cosmetic appeal, to win an award, just because there are so many... But, a slant six with a turbo on it is such a rarity, judges HAVE to pay attention.
Advantage, slant six
Then, there are the negative factors... and, there are some!
You can always put a turbo on a small block and go much faster than you could EVER hope to go with a slant six
Advantage, small block
No roller cams are available for slant six engine (no available roller-tappet cores) so, the ZDDP issue is always a problem.
Advantage, small block
You REALLY need both an intercooler AND a chemical intercooler (alcohol injector) for a hi-boost turbo slant six, and they don't give these away. None is needed on a normally-aspirated small block,
Advantage, small block
I don't think that a turbocharged slant six is a very good bracket car for drag racing, because of problems with turbo-spool on takeoff, and consistency. We are not building our car to run brackets; if we wanted to win bracket races, we'd build something else.
Advantage; small block
Detonation under boost will destroy a turbocharged motor on boost, quicker than you can say "turbo." So, fuel of sufficient octane is always going to be a problem. E-85 would be the perfect hi-octane fuel, but the quality of it at the pump is so iffy, you just can't trust it when it comes to boosted motors. The normally-aspirated small block, with high-compression pistons is choosy when it comes to octane, too, but the results from normally-aspirated detonation are usually not as "catastrophic" as when it happens with, say, 25 pounds of boost. So, I have to say that the turbo slant six is a problem child in that area. Bear in mind that I originally said a "500-horsepower" turbo slant six. That's what we are talking about, here, But to be realistic, the great bulk of whatever turbocharged slant six motors come to pass, MOST will never see boost levels that high, and the picture changes greatly at 7-10 pounds of boost. But, that wasn't the argument, here. Soooooo...
Advantage, small block
The sound of a well-tuned, high-revving small block at full song, is music to almost everyone's ears. Slant sixes with turbos are quiet: the turbo impeller sort of homoginizes the sound waves...
Advantage small block
Due to the very-limited rpm range (less than 5,500rpm, tops, usually) the slant six turbo motor doesn't need a high rpm ignition system like a high-winding, 500 HP, normally-aspirated small block. A stock distributor will work fine, with no worries about effective spark at 7,000 rpm... 'cause, that boosted slant 6 is never gonna see even 6,000 rpm, much less 7,000...
Advantage, slant six
There are no aftermarket (aluminum, or otherwise) cylinder heads for the slant six, so the best you can do is to port the original head, and add some cheap 1/75"/1.5" valves (some folks have used 318 valves.) And, there's only ONE head to deal with, so there's just no place to spend money (of the quantity the V8 car can absorb) on the head. A complete ported head for a slant 6, ready to run, will be cheaper than a pair of aftermarket V8 heads that will support 500 horsepower, I believe.
Advantage, slant six
I hope that after reading all this meandering set of posts, I have made a case for it being actually cheaper to build a 500 HP turbo slant 6 than it is to make the same amount of power with a normally-aspirated, small block V8.
Just my 2-ceents... Your Mileage May Vary.... :cheers:
I BELIEVE that a turbocharged slant six motor is about 80-100 pounds
lighter than an iron small block. Can't prove that, but I'd bet on it.
Advantage slant six
The "bling" factor at shows might be of interest to some. A nice-looking small block has a LOT of competition at car shows and usually needs to have something really special, in cosmetic appeal, to win an award, just because there are so many... But, a slant six with a turbo on it is such a rarity, judges HAVE to pay attention.
Advantage, slant six
Then, there are the negative factors... and, there are some!
You can always put a turbo on a small block and go much faster than you could EVER hope to go with a slant six
Advantage, small block
No roller cams are available for slant six engine (no available roller-tappet cores) so, the ZDDP issue is always a problem.
Advantage, small block
You REALLY need both an intercooler AND a chemical intercooler (alcohol injector) for a hi-boost turbo slant six, and they don't give these away. None is needed on a normally-aspirated small block,
Advantage, small block
I don't think that a turbocharged slant six is a very good bracket car for drag racing, because of problems with turbo-spool on takeoff, and consistency. We are not building our car to run brackets; if we wanted to win bracket races, we'd build something else.
Advantage; small block
Detonation under boost will destroy a turbocharged motor on boost, quicker than you can say "turbo." So, fuel of sufficient octane is always going to be a problem. E-85 would be the perfect hi-octane fuel, but the quality of it at the pump is so iffy, you just can't trust it when it comes to boosted motors. The normally-aspirated small block, with high-compression pistons is choosy when it comes to octane, too, but the results from normally-aspirated detonation are usually not as "catastrophic" as when it happens with, say, 25 pounds of boost. So, I have to say that the turbo slant six is a problem child in that area. Bear in mind that I originally said a "500-horsepower" turbo slant six. That's what we are talking about, here, But to be realistic, the great bulk of whatever turbocharged slant six motors come to pass, MOST will never see boost levels that high, and the picture changes greatly at 7-10 pounds of boost. But, that wasn't the argument, here. Soooooo...
Advantage, small block
The sound of a well-tuned, high-revving small block at full song, is music to almost everyone's ears. Slant sixes with turbos are quiet: the turbo impeller sort of homoginizes the sound waves...
Advantage small block
Due to the very-limited rpm range (less than 5,500rpm, tops, usually) the slant six turbo motor doesn't need a high rpm ignition system like a high-winding, 500 HP, normally-aspirated small block. A stock distributor will work fine, with no worries about effective spark at 7,000 rpm... 'cause, that boosted slant 6 is never gonna see even 6,000 rpm, much less 7,000...
Advantage, slant six
There are no aftermarket (aluminum, or otherwise) cylinder heads for the slant six, so the best you can do is to port the original head, and add some cheap 1/75"/1.5" valves (some folks have used 318 valves.) And, there's only ONE head to deal with, so there's just no place to spend money (of the quantity the V8 car can absorb) on the head. A complete ported head for a slant 6, ready to run, will be cheaper than a pair of aftermarket V8 heads that will support 500 horsepower, I believe.
Advantage, slant six
I hope that after reading all this meandering set of posts, I have made a case for it being actually cheaper to build a 500 HP turbo slant 6 than it is to make the same amount of power with a normally-aspirated, small block V8.
Just my 2-ceents... Your Mileage May Vary.... :cheers:
Hey Bill, I love your write up on all of that. I really want to build a turbo slant six for my next car, and your definatly not helping my cause! Lol I would say that a mid 12 second turboed 2700lb early-a, that could be used to drive every day would not be very difficult or expensive to build considering.. And I'll bet fuel mileage with 2.76 gears would be pretty reasonable when not romping on the gas all the time.
Double post.... sorry.
Hey Bill, I love your write up on all of that. I really want to build a turbo slant six for my next car, and your definatly not helping my cause! Lol I would say that a mid 12 second turboed 2700lb early-a, that could be used to drive every day would not be very difficult or expensive to build considering.. And I'll bet fuel mileage with 2.76 gears would be pretty reasonable when not romping on the gas all the time.
Well, it's not all that easy, but it IS do-able, for sure. Aaron is building an early A Body turbo car (Srixon) that I think is really interesting. It's almost finished. I'm looking forward to seeing how it runs, but I think it's going to be really quick... He does GOOD work!!
Stay tuned; our car is nearing completion too... Right now, we're changing some stuff in the fuel setup, but we're driving it on the street. Just a matter of time... and tune. :blob:
Thanks for your interest!!!
I'm pretty excited to see how both your and Aarons cars run.. I want to get myself a 63-66 Valiant or Dart two door post car to do. But who knows what I will end up with.. I really like that your doing a four door, too many four door cars are being tossed away in the trash basically these days. My money has been really tight lately though too so if I can pick something up for super cheap (I've picked up free cars before too) I will probably do it.
Since you don't have a car to build right now, let me say just a couple of things in defense of the generation ! cars. Those '60-62 Valiants are lighter than our car and will be faster with any given drive train. They have full rear wheel openings, so you don't have to worry about the slicks rubbing the inside of the fender panel.
We built a 4-door because we decided to build a car on Sunday and Freddie's wife found a '64 Valiant in the paper the next day... and he didn't want to spend a lot of time shopping for a 2-door (which are 25 pounds lighter) and got it in fairly good cosmetic condition for $700.00.
We can't get a lot of tire under the back of it (9"-wide, 26"-tall 15-inch slicks are the limit without moving the springs and/or tubbing it) but otherwise it's been an ok car to build.
But an earlier ('60-'62 car) would have been better. We spent a lot of time and effort getting a reasonably-wide tire under this thing; hopefully, we're gonna need it!!!!
rayer:Good luck!!!
No, thank you! Your the guys that have already paved the road, I just need to follow it. I never really cared much for the styling of the 60-62 a-body cars actually, but like I said, who knows what I will end up with in the end. Either way, It should scoot pretty well if I listen to you guys.
Tom and Ryan paved the road; we're just copy-cats... seriously!!!
Just think about how EASY it is to get a big tire on those early cars... and that they are the fastest of the bunch (lightest.)
:wack:
You can't see what it looks like while your driving it... LOL!
Whatever you do, have FUN; that's what it's all about...
Later...
srixon4406
TURBO TOAD
Yah Bill there's plenty of room in my wheel wells I'm running a 9" 275 15 with the leaf springs moved inboard 3" without a mini tub and still have about 4" of open space to work with if need be I'd have to get a different rim with the correct BS
[ame="http://youtu.be/2Y4i4UOLiSA"]302 Found[/ame]
Here you go Bill the quality of the video isn't great every time I upload I losses some quality but the sound works good
[ame="http://youtu.be/2Y4i4UOLiSA"]302 Found[/ame]
Here you go Bill the quality of the video isn't great every time I upload I losses some quality but the sound works good
THAT video works great for me. Thanks!
That thing sounds NASTY!!!! Ours doesn't sound anything like that...
I love it!!!
Gonna be FUN....... :cheers:
Since you don't have a car to build right now, let me say just a couple of things in defense of the generation ! cars. Those '60-62 Valiants are lighter than our car and will be faster with any given drive train. They have full rear wheel openings, so you don't have to worry about the slicks rubbing the inside of the fender panel.
We built a 4-door because we decided to build a car on Sunday and Freddie's wife found a '64 Valiant in the paper the next day... and he didn't want to spend a lot of time shopping for a 2-door (which are 25 pounds lighter) and got it in fairly good cosmetic condition for $700.00.
We can't get a lot of tire under the back of it (9"-wide, 26"-tall 15-inch slicks are the limit without moving the springs and/or tubbing it) but otherwise it's been an ok car to build.
But an earlier ('60-'62 car) would have been better. We spent a lot of time and effort getting a reasonably-wide tire under this thing; hopefully, we're gonna need it!!!!
Good luck!!!
Well, this morning I picked up the car that I am going to keep a slant six in, and eventually doing a turbo set up to it down the road. Its a 63 Valiant 2 door post sedan thats been off the road since 1984 and needs a ton of work, but its nice, straight, and rust free for the most part. I'm pretty excited!
:cheers:
-
