David Vizard, Uncle Tony's garage, Unity motorsport. Mission impossible Dodge 302 Head porting

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318 all mopar parts build.

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2 rods on the left are '70 318 Full Floating Rods, (#2406782) much lighter and better performance at 718 grams.

The rod on the right is the heavier 645 press on rod at 758 grams.

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9.2:1 cr pistons '68 -'69 318.
From the 230 hp engines.

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Fresh standard bore 318 block ready for above pistons and light weight performance free floating stock rods.

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☆☆☆☆☆
 
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318 Connecting Rod Comparison

Pictured on the left:
2406782.
"782" Lighter Free Floating Rods

Pictured on the right:
3418645
"645" Heavier press on Rods.

View attachment 1716035230

No wonder the '68-'69 higher compression 318s perform so well and have more available power. Huge difference in weight there, 30 oz.

That is getting close to 2 lbs less reciprocating weight with the 782 lighter rods.

View attachment 1716035231


View attachment 1716035232
30 ounces =850+ grams. That would be over 100 grams lighter per rod. That is not correct. 10-15 grams per rod is more like it.
 
30 ounces =850+ grams. That would be over 100 grams lighter per rod. That is not correct. 10-15 grams per rod is more like it.
Yes. it is actually 40 grams difference.

2406782
782 rods = 718 grams

2628699
699 rods = 726 grams

Late 318, and 340/360
645 rods = 758 grams

30 ounces =850+ grams. That would be over 100 grams lighter per rod. That is not correct. 10-15 grams per rod is more like it.
It should be "Grams" instead ounces.

Another opportunity to learn some more about these light rods.

There were 3 different weights for mopar small block rods as shown above.

The 782 rods (718 grams) are actually 40 grams lighter than the heavy 645 rods (at 758 grams)

 
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Yes. it is actually 40 grams difference.

2406782
782 rods = 718 grams

2628699
699 rods = 726 grams

Late 318, and 340/360
645 rods = 758 grams


It should be "Grams" instead ounces.

Another opportunity to learn some more about these light rods.

There were 3 different weights for mopar small block rods as shown above.

The 782 rods (718 grams) are actually 40 grams lighter than the heavy 645 rods (at 758 grams)
The stock rods weigh that much? I'm a fan of the DV/AW 318 build, but for the amount of work DV is putting into those rods, I think I'd just get a set of Scat rods at 582 grams each (with better big end shape and better rod bolts) and call it good. I doubt he's taking off 4+ oz. per rod.
 
But think of a Johnny Popper .... flywheel motor... the weight becomes momentum. So all that weight on the rotating assembly, doesn't it give more of a push when you shift gears? Hard to dog that weight down .....



:lol:
 
Not sure of your implications here????
BUT now i have something to say or add to this thread
Why would i ignore a thread that i'm willing to look through all the chest pumping to learn something new.
O and by the way, thanks for the red X......I get so few :poke: :popcorn:

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We need one here!
 
2 barrel Intake manifolds
2 barrel carburetors

# 1

1970 single plane 2 bbl intake, stock 318. Good smooth flow runners, no sharp turns.

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2 barrel carburetors:

1969 stock 318 BBD, low top carb, pictured on the left.

1970 stock 318 BBD, high top carb, pictured on the right.
(the high top carbs were use in higher elevations).

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The '69 2 bbl on the left definitely has better flow capabilities, as obvious by the top air horn opening.

# 2

1990 Mid Rise Dual Plane 318 intake.

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The '90 318 Mid Rise Dual Plane intake offers better performance.

People that want to build the 2 barrel 318s now have a few more choices to accommodate their goals.

Direct Bolt On for the 318s
All Mopar

☆☆☆☆☆
 
Bolted to the ported 302 head....in unmodified form, I wonder how this would compare flow wise to the one Charles is using.

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Bolted to the ported 302 head....in unmodified form, I wonder how this would compare flow wise to the one Charles is using.

View attachment 1716035850

Unfortunately for Charles, the above mid rise '90 Dual Plane intake will outperform the restricted one he is working to open up. This one is just a way better design, plus it being a "Mid Rise" with a very large plenumn for the 2 barrel setups. Also this above manifold was engineered to work with the 302 heads as these heads and the '90 intake came together with the roller 318 in the 1990 D150 and W150 Dodge Pickups.

I like Charles, he is good with the numbers and explains well each step that he is taking and why. Wish him the best on getting the old school intake to perform as they desire it too.

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I should probably add real life experience with the above '90 mid rise intake and 302 head combination, with the stock roller cam on the stock '90 318 roller short block. This was the engine in this 1976 D100 Pickup.

Never once did the valve train float out as the engine was still gaining rpms, also never once did the fuel/air flow not feed the demand. The engine just kept pulling as the rpms went up, I was always looking for more road as the engine was continuing to pull, nice package.

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Here is the '90 318 with 302 heads and '90 mid rise intake.

Running it in here on the engine run stand after a fresh valve job, put in the thin .028 ths head gaskets and a new stock oil pump. Edelbrock 1406 on the adapter to the '90 mid rise intake manifold.

Went into the Orange '76 D100 after this.

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☆☆☆☆☆
 
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As we are talking about the '90 Mid Rise, Dual Plane intake manifolds for the 318s and the 2 bbl build applications.

Here is what the bottom side of the intake looks like. Impressive Yes.

And no tin shield underneath holding carbon bits from engine oil burning at the exhaust cross over path.

Pretty good clue as to the better flow capabilities of this intake as compared to the 2bbl dual planes of 1972.

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Here is the bottom side of a 318/360 2 barrel intake manifold for comparison to the underside runners to the '90 318 mid rise manifold.

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Here is more of side shot of the same manifold '90 mid rise.

Shows the height of the mid rise and plenum section. Also shows the height of the runners and their added volume.

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All Original Mopar
 
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David Vizard, Uncle Tony's Garage, Unity Motorsports, Mission Impossible project.​

Upper vs. lower H​




If you look at the intake plenum top, Charles has machined the round openings to square. Someone in the comments section of the video said: "They are going to hog out the base of the 2 barrel carburetor and go to square butterflies". This is an interesting thought, have not heard anything in the Manifold/Carb plans about the square butterflies yet, guess we will have to see what evolves.
 
Pardon me, but how in the world did this thread get to 51 pages?!? Boggles the mind.....

There is kind of 3 or 4 things at play here.

1. The usual battle about building a 318 vs all other larger displacement engines. Fair is Fair

2. There a lot of people that are following and just want to learn. They can maybe pick up some tricks and techniques that also apply to other things on their cars too, besides just porting heads and making 1 horsepower per cubic inch.

3. Then there is the Uncle Tony thing that I am sure most are familiar with, lots of controversy there.

4. Then there are those that say their way is the only way how to build an engine, so then that goes back and forth till no end.

The saying goes there is no such thing as bad PR. Good PR, Bad PR it's all PR and it stirs up attention and that is why this thread has become so massively popular (or unpopular) depending how you look at it.

At the end of the day the basic car owner can come in here and take a look and gain enough knowledge to go back and put together a good running street version of the 318, make a few tweeks to his liking and skill ability, have some fun doing it, and be able to do it with all mopar parts.

One last thing someone may come to this thread (even years from now) on a "FABO Search" and or a "Google Search", or even a referral from one of the members here, to come to this site to help source out some particular information they are looking for to help them with their fix.

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All in all it will be interesting to see the final outcome of 1 hp per cu.in with a 2 bbl 318 engine.

David Vizard, Charles S. (302 Head and Intake Porter) and Andy Woods are the gentlemen doing the build, so hats off to them for giving it a go and donating their time doing it. Uncle Tony was part of helping to pull the original idea together, but is not hands on as of yet.

The Good, the Bad, and the Ugly, It's All Good

Entertainment and a chance to learn new things and techniques to keep these old classics on the road.

Thank You
 
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Just for the sake of the conversation, 2 FABO members were banned from the site posting for a week (for things getting out of hand), and one other was given the benifit of doubt and remains active.

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Now on with the next steps of the 1 horsepower per cu.in. 318 engine build.

Will be interesting to see the oil system modifications that Andy Woods of Unity Motorsports is working on to help with better performance.

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Stay Tuned !

☆☆☆☆☆
 
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Now up next Charles Servedio is preparing to do the plenum center partition divider "Half Drop" modification to the 2 barrel Intake manifold he is working on.

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Looking Good !



YouTube Short Video ^^^
 
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Andy Wood and Team are talking of boring the '72 318 build block .060 ths. over to clean it up, and then fit it with some after market pistons to work to try and get the compression ratio where they want it. Not sure that is a true 318 anymore ?

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Their 1972 318 build engine
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Here is a great alternative that hits the 9.6:1 compression ratio right on the money, and with all mopar parts.

*1969 318 stock bore short block
*Stock '69 318 pistons
*Thin .028 ths head gaskets
*Reman 302 stock valve heads with 3 angle valve job
*Stock '69 318 crankshaft
*Stock spec standard oil pump

It's a good way to build them when you can round up all the right mopar parts. Done without doing major modifications and machine work. Assemble it, bolt it together, All Mopar Parts.

9.6:1 Compression Ratio

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Still able to run pump gas without any specific octane boosters.

2 barrel or 4 barrel any way you like it.

☆☆☆☆☆
 
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Andy Wood and Team are talking of boring the '72 318 build block .060 ths. over to clean it up, and then fit it with some after market pistons to work to try and get the compression ratio where they want it. Not sure that is a true 318 anymore ?

View attachment 1716036463

Their 1972 318 build engine
View attachment 1716036464
______________

Here is a great alternative that hits the 9.6:1 compression ratio right on the money, and with all mopar parts.

*1969 318 stock bore short block
*Stock '69 318 pistons
*Thin .028 ths head gaskets
*Reman 302 stock valve heads with 3 angle valve job
*Stock '69 318 crankshaft
*Stock spec standard oil pump

It's a good way to build them when you can round up all the right mopar parts. Done without doing major modifications and machine work. Assemble it, bolt it together, All Mopar Parts.

9.6:1 Compression Ratio

View attachment 1716036466

Still able to run pump gas without any specific octane boosters.

2 barrel or 4 barrel any way you like it.

☆☆☆☆☆
If there stock type pistons I think its fine, if there zero decked so they don't have do offset crank would a bit of a compromise if domed that would be slightly cheating.
 
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