Possible cam install

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zakimodo

zakimodo

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I have a bad lifter and am getting ready to swap out the heads at the same I am installing the lifters. I was also looking at installing a new cam. The question is if i can do a cam swap with the engine in the car due to the fact I'm Little limited on space at the moment in the garage. Also what is a good cam selection. The car is a 74 Duster, engine is a 78 318 all stock at the moment except redbrick performer intake a 833 and 3.23 gears The heads will be 360 heads shaved to keep the compression up and port matched with a little polishing probably stock 360 vales.
 
For a all stock 318, 2 or 4 bbl. carb, a Comp Cams XE262H will work very well with your gears and 4 spd. With traction and a good tune, you should be able to run 14's. (with a 4bbl.)

Oh, just realized your location, alt. elevation, low 15's w/4bbl.
 
Yea its a a 4 barrel. And the heads will be 360 heads shaved .0015 and portmatched. Im hoping to wake it up a bit.
 
Sorry, LOL, .0015 shaved? I think you better sit back and do some math on what it will take to get the 360 head cc down to the 318's head cc and think about if that is enuff compresion right there to run the cam and get what you want out of the engine as it is.

(P.S. the advertised ratio for the 318 floats between 8.0-1 and 9.0-1. While in reality, my 318 speced in (Measured myself) at a lowly 7.8-1.)
 
it will give you almost half a point compresion EXAMPLE 8.1 \\ 8.4
AND THATS GOING WITH A THIN .026 HEAD GASKET
STOCK IS A .040 HEAD GASKET
USE .010 SHIMS FOR THE SHAFTS
I DID THE SAME THING TO MY 360.
CUT THE INTAKE SIDE OF THE HEAD OR YOU WILL HAVE TO MAKE THE HOLES BIGGER ON THE INTAKE.
I HAVE 308 HEADS
NOT SURE WHAT YOU HAVE FOR CASTINGS
TAKE YOUR TIME AND TRIPLE CHECK EVERYTHING
AERO RACING HAS NEW HEADS FOR $400 DONE 318CI
$600 DONE 360CI
IF THAT IS A OPEN CHAMBER 318 HEAD JUST BY A SET OF 302'S OR 920S FROM THEM
302'S AND 920'S HAVE A CLOSED CHAMBER :-\"
302'S ARE SWILL PORT AND 920'S ARE A 1967 HEAD
I LIKE PURPLE SHAFT CAMS BUT THAT 262H COMP WILL WORK GOOD TO.

IT'S NEVER THE CAMS FAULT ,IT'S ALWAYS THE CROWD IT HANGS OUT WITH OR IN OTHER WORDS THE PARTS IT,S USED WITH.
 
T67, QUIT YELLING! WE CAN HEAR YOU! :)

Really, up here in the thin air you can run 10:1 on premium easy. I would suggest some Magnum heads to bump the compression and run the a Lunati 60401. It would be a great daily driver and tons of torque right where you need it.
 
it will give you almost half a point compresion EXAMPLE 8.1 \\ 8.4
AND THATS GOING WITH A THIN .026 HEAD GASKET
STOCK IS A .040 HEAD GASKET
Click to expand...

That's a 1/3 point, nevermind almost a half point.
The stock gasket is the MP thin gasket, not the .040 gasket.
Your example is also misleeding since '78 engine is more likely a 7.8-1 engine with the pistons so far down the hole, it'll echo. I know what my '79 looks like on the INSIDE...INSIDE...inside...inside...inside ...inside...inside

IF THAT IS A OPEN CHAMBER 318 HEAD JUST BY A SET OF 302'S OR 920S FROM THEM
302'S AND 920'S HAVE A CLOSED CHAMBER
302'S ARE SWILL PORT AND 920'S ARE A 1967 HEAD
Click to expand...
Would you show me open port / large port 318 heads?
I can show you '79 Heads that have small chambers just like the 302's.
 
To answer your first question, yes you can do the swap in the car. Just remove the radiator for clearance. If you`re doing the heads too that will make it really easy.
 
Thanks. the cam swap is my big concern. And i meant to type .025 i was looking at the wrong sheet of paper. Please ignore it. I have a local mopar guy doing the heads for me so I'm pretty confident hes got it figured out. At this time I cant remember the exact #'s as i have lost my notes but we have it figured to bring the compression up to around 9.5
 
LOL, OK, GOOD! Good to hear this. I figured I get a "OH, 1 to many zeros." or something. Ha ha ha
 
Last week, I was at the point that I thought cam needed to come out.
After measurements, it looked like the engine would have to be raised, to clear the hood bracket, behind the grille.
 
hey rumble fish
the stock gasket is the thin gasket .026
hows that??? well you were there i guess :glasses9::glasses9::glasses9:

anyways that was not the point.
I told zakimodo what i did to my 360 and too triple check everything
i dont even now what head castings he has. he has someone helping him and i'm sure it will turn out great :cya:

my example was not fact \\ it was an example
you talk like everything is a fact when you dont even know what a chamber is.:happy3:

RUMBLE FISHES WORDS >>Would you show me open port / large port 318 heads?
I can show you '79 Heads that have small chambers just like the 302's

PORTS??? :rolleyes::rolleyes: WHOS TALKING ABOUT PORTS????
chambers are open and closed

RUMBLE FISHES WORDS>> Your example is also misleeding since '78 engine is more likely a 7.8-1

MORE LIKELY IS NOT A FACT,in fact we are just traiding info and only trying to help each other.**** my example is also misleeding?????.:sad2::sad2:
have a drink or two :drinkers::drinkers:

zakimodo said he will have 9.5 to 1 comp.when this guy gets done with his motor???? get out your dooms day calculator rumble fish
 
hey rumble fish
the stock gasket is the thin gasket .026
hows that??? well you were there i guess
Click to expand...
What do you mean "How's that?"
I don't understand?
Yes indeed they were the thin head gasket. I have been there and done that a few times.

my example was not fact \\ it was an example
you talk like everything is a fact when you dont even know what a chamber is.

RUMBLE FISHES WORDS >>Would you show me open port / large port 318 heads?
I can show you '79 Heads that have small chambers just like the 302's

PORTS??? WHOS TALKING ABOUT PORTS????
chambers are open and closed
Click to expand...

LOL, I don't know what a chamber is. YYYAAAAaa! OOoooKAyy! what ever makes you happy.

I miss worded it and it was easy to see what I did and now your splitting hairs. GIVE me a break.

I think you can re-read it correctly on what it was exactly I was supposse to say. Chamber instead of port.

RUMBLE FISHES WORDS>> Your example is also misleeding since '78 engine is more likely a 7.8-1

MORE LIKELY IS NOT A FACT,in fact we are just traiding info and only trying to help each other.**** my example is also misleeding?????.
have a drink or two
Click to expand...

Now here you are trying to blurr lines and call me a lier. Shame on you.

OK, be honest now, tell me your finding on YOUR '78 - '79 smog motor when you mic it up and do the math right here on line. We'll see how's math is right or wrong.

MORE LIKELY is given the fact of factory tolorences can be off, bore sizes not exact, bearing sizes larger, it's all the norn.

You said at one half point about 8.1 to 8.4.
It's a 1/3 and with the wwrong gasket size!

Wrong info! Hello, it's just simply wwrong, no 2 ways about it, not even close, just wrong wrong wrong!

Your example is mis leading because it is so far from what it should be it's not funny at all.
You should be more exacting, not perfect, but alot closer than what your writing.

The thing is people whom not exactly know better and/or have a machinest to do alot of work for them will take what you say as iron clad and when they find out it is not, and things go wrong, your advice has then cost someone there hard earned money and leeds to broken parts, wasted time, and a bad wrap for this forum.

Miswording yourself is one thing, providing very wrong info is another!
Nice way to intro yourself.

zakimodo said he will have 9.5 to 1 comp.when this guy gets done with his motor???? get out your dooms day calculator rumble fish
Click to expand...
Get my calc out!?!?!
I'll take it out on you and calc your end time here for calling me a lier, and providing a messy wrong info thread with a nice dose of sassy to me.
HOWSA that!

I didn't come out fire guns a blazin so maybe you need to get a drink of water yourself for your mouth and those guns.

Drink with you? You'll have better luck getting a duck pregnet!

Go on, keep trying to lie and twist my words and split hairs, go on.
 
Quote:
From you;
IF THAT IS A OPEN CHAMBER 318 HEAD JUST BY A SET OF 302'S OR 920S FROM THEM
302'S AND 920'S HAVE A CLOSED CHAMBER
302'S ARE SWILL PORT AND 920'S ARE A 1967 HEAD
Click to expand...

Would you show me open chamber / large chamber 318 heads?
I can show you '79 Heads that have small chambers just like the 302's
Click to expand...

There, fixed for your simple eyes, nice and easy to read.

SIMPLE QUESTION! SIMPLE ANSWER!
SHOW ME THE PICS? Or can't you.
 
rumble fish
just trying to let the guy know it would work and i did the same thing to my 360.
this is about cars and were all into cars right?
i talk about my car and you talk about yours right????
what i did worked for me :dontknow::dontknow:
i had hands on info.and passed it along

rumble fish \\\this is your comment for my info

Wrong info! Hello, it's just simply wwrong, no 2 ways about it, not even close, just wrong wrong wrong!

Your example is mis leading because it is so far from what it should be it's not funny at all.
You should be more exacting, not perfect, but alot closer than what your writing.
////////////////////////////////////////////////////////////////////////////////////
ONE MORE TIME
i cut my heads .015
went from a .040 head gasket to a .026 head gasket
I calculated my comp. to go from 9.1 to 9.4
that is a .3 increase in comp.
i told him to cut the intake side of the heads or he will have to make the intake holes larger.IT would save him some time to cut the intake side.
gave him a tip on some cheap heads at aeroracing

ONE QUESTION ((( WHATS WRONG WITH THAT )))
AND HOW MUCH CLOSER SOULD I HAVE BEEN AT TELLING THE TRUTH.
WHOS CALLING WHO A LIAR.
as far as introducing my self \\\ the first thing i wright you bust on
when i talk to people i dont think of them as being stupid
a good mechanic thinks the hole process threw before starting a project
I gave him what i know in info.and then told him to ((take his time.))


WHATS MY COMP. IN MY MOTOR THEN.
IF I CAME UP WITH 9.4 AND ZACKIMODO CAM UP WITH 9.5 FOR HIS MOTOR ,WHO'S SPLITING HAIRS AS YOU PUT IT

dude if you want to bench race thats one thing but when i give advice about anything it's because i dont mind helping someone with there project.
in the end its about having fun with cars.its all good.:cya::cya:
 
OE post;
it will give you almost half a point compresion EXAMPLE 8.1 \\ 8.4
AND THATS GOING WITH A THIN .026 HEAD GASKET
STOCK IS A .040 HEAD GASKET
Click to expand...

Next post on subject;
ONE MORE TIME
i cut my heads .015
went from a .040 head gasket to a .026 head gasket
I calculated my comp. to go from 9.1 to 9.4
that is a .3 increase in comp.
Click to expand...

8.1 - 8.4 or 9.1 - 9.4
almost a half point - .3 increase
stock .040 gasket - .040

&

Quote:
IF THAT IS A OPEN CHAMBER 318 HEAD JUST BY A SET OF 302'S OR 920S FROM THEM
302'S AND 920'S HAVE A CLOSED CHAMBER
302'S ARE SWILL PORT AND 920'S ARE A 1967 HEAD
Click to expand...

Would you show me open port / large port 318 heads?
I can show you '79 Heads that have small chambers just like the 302's.
Click to expand...
OK, have fun (tryin to) hammering me again on the mis-use of words, sub out the word port for chamber in the first line of my replying question, which you still have not answered. Still waiting.

RUMBLE FISHES WORDS>> Your example is also misleeding since '78 engine is more likely a 7.8-1

MORE LIKELY IS NOT A FACT,in fact we are just traiding info and only trying to help each other.**** my example is also misleeding?????.
Click to expand...

Did ya consider answering my next question? Or have you not opened up an engine and taken out your tools to mic it up?

my example was not fact \\ it was an example
you talk like everything is a fact when you dont even know what a chamber is
Click to expand...

Your exapmle?!? LOL!
You come back and rib me out of no where with this pathetic line. Like a teenager.
All I did was correct you in your mistake and ask a question. Post #7.


ONE QUESTION ((( WHATS WRONG WITH THAT )))
AND HOW MUCH CLOSER SOULD I HAVE BEEN AT TELLING THE TRUTH.
WHOS CALLING WHO A LIAR.
Click to expand...
Your calling me a liar on not knowing what I'm doing and calling into question the numbers I came up with after micing out the ratio. Read below;

Quote:
RUMBLE FISHES WORDS>> Your example is also misleeding since '78 engine is more likely a 7.8-1

MORE LIKELY IS NOT A FACT,in fact we are just traiding info and only trying to help each other.**** my example is also misleeding?????.
have a drink or two

Now here you are trying to blurr lines and call me a lier. Shame on you.

OK, be honest now, tell me your finding on YOUR '78 - '79 smog motor when you mic it up and do the math right here on line. We'll see how's math is right or wrong.

MORE LIKELY is given the fact of factory tolorences can be off, bore sizes not exact, bearing sizes larger, it's all the norm.
Click to expand...


What say you. More arguments?

the first thing i wright you bust on
Click to expand...

Me bustin on you. You aint never got it yet. I corrected.
How about my questions answered?

You know what, re-thinking it, you can't or you would have contributed all ready. I'm basicly done here. Nevermind. Wate of time.

Appologies to zakimodo
 
rumble fish
lets talk about parts and only parts from now on ok
 
0706_mopp_24_z+small_block_overhaul+used_heads.jpg

this is a 302 closed chamber head for a 318
the 920's are also a closed chamber head but do not have swirl port tec.
A closed chamber head will give a higher comp. # then a open chaber head.
 
p39508_image_large.jpg

this is a open chamber head
rumble fish \\\\ these are the photos you asked for
:thumbrig::thumbrig::thumbrig:
 
Is this true.



318s get a little radical with a cam larger than .450 lift on 270+ duration, 360s get radical when you get up to .485 and 290+ duration, so a .450 lift and 270 degree duration in a 360 screams, idles pretty smooth and will get a little better mileage without any sacrifices.

This is form allpar.com

http://www.allpar.com/mopar/4bbl.html
 
zakimodo \ I hope this helps you
Its not so much the lift #s but the size of the cam @ 50.
you might have a cam with say .453 lift for a 318
but the advertised duration is 304
if you looked only at these #s you would think it was way to big
but this cams duration @ 50 is 225 deg.
it's center line is 108
this is the same cam i just put in my 318 67 cuda
It has a really chunky idle but responds at any rpm.
for example i will show you a purple shaft cam
a .474 purple shaft is .474 lift right??
it's advertized duration is 280
it's center line is 110
now looking at those numbers you would think, it's not that big right???
but @ 50 it's 238
it is a very strong cam for a 318 and with everything correct in the combination
like the compression ratio at 9.0:1 \ headers \ 3000 stall convertor \ 3.91 gears\26 inch slick and a distributor that has at full advance by 2200 rpm
it will perform really good.
now thats a good combination with a 318.
BUT lets take the same combination and put it in a 360ci
what happens is since it is a bigger cube motor,the cam becomes smaller due to the amount of air it wants to pull in.
360 combination>>>>still 9.0:1 compresion ratio \ headers \ 2600 stall convertor \ 3.55 gears \ 26 inch tall slick and the same distributor.
both motors will run great but the 318 will have a radical idle and the 360 will have a chunky idle.
and did you notice the 360 will not need as much gear and convertor with the same cam.
if you answer these question you can then pick a cam based on your combination and availible parts.I numbered them so please answer them that way.It will be so much easyer and quicker THANK YOU!!!

1)WHAT GEARS DO YOU HAVE??? i see 3.23s???
2)WHAT CONVERTOR DO YOU HAVE???(((STALL SPEED)))poss. stock ** if stock i can find out the stall.
3)WHAT SIZE REAR TIRE??? HOW TALL IN INCHES???
4)WHAT SIZE CARB AND WHAT COMPANY???
5)DO YOU HAVE HEADERS???? WHAT SIZE ??? 1 5/8???
6}DO YOU HAVE A PERFORMANCE IGNITION AND DISTRIBUTOR??? MOPAR PERFORMANCE OR MSD??
7}HOW SMOOTH DO YOU WANT THE CAR IDLE????
FOR IDLE QUALITY JUST LOOK AT THE CAMS CENTER LINE
108 WILL BE A RADICAL TO A CHUNKY IDLE IN A 318
{{{ MORE DURATION @ 50 ADDS TO THIS PROBLEM.}}}
110 IS BETTER AT IDLE
114 IS BETTER YET
ALL THIS INFO IS JUST FOR YOUR COMBINATION ONLY.
YOU HAVE TO LOOK AT EVERY CAR AS A DIFFERANT COMBINATION AND THE INTENTIONS FOR THE VEHICLE.
talk to you soon :-\":-\":-\"
 
Gears 3.23
I have a clutch no converter
tires are about 28 inches if i remember right
Holley 600
1 5/8 headers
Mopar ignition
I would like a choppy idle.

This car spend most of the time on the street with occasional drag strip appearances.
 
no problem with changing the cam in the car.ive always used custom grinds from isky,or schnieder .isky offers a hyd. line called mega cams.their 270 mega might work for what you want(270 duration 465 lift 221@50 108 lsa) basic rpm is 2000 to 6000 according to them.its old tech compared to the new grinds out there,but ive had good results with every thing ive used from them.just my 2 cents.
 
Use the paw camshaft
part # 10357
.454 lift is perfect \\ not to much
The duration is 225 @ 50 and good to 6000 rpm +
The plus is because your running 360 heads on a 318. ( higher flowing heads )The 318 only demands so much air.
this cam loves rpm but has a ton of low end torque.
It will sound choppy as you wanted ,in fact if you put a good exhaust system on the car you will love it.
If you get a new exhaust system and dont mind if it's loud then go with a three inch system and a good set of performance mufflers.
Your 3.23 gears are the limiting factor in your combination, but this cam will work with your gears and any lower gear ratio you choose.
The 3.23's work in your situation because you have a 4 speed transmission.
If you did not get valve spings yet then buy the ones that go with the ssi cam
valve spring part # vs150
Also the lifters they sell are good to 6000 rpms
part # 2011
With shipping it will be less then it was for me because your closer to california. shipping was $167.78 for all three parts.
You will be more then happy with this.
The same cam is in my 67 cuda with a fresh 318.
I would love to put slicks on the car but this combination will toast my
7 1/4 rear end in two seconds.
If you run slicks,replace your u joints first and make sure that you have new engine and transmission mounts installed.
Mancini racing makes a engine mount called { mag mounts }
It is a bolt throgh design that locks up under hard acceleration.
they are $54.95 a set.
JETS FOR YOU CARB
67 JETS FRONT \ 77 JETS REAR \ 35 PUMP SHOT
NOT SURE IF YOU HAVE A MEC. SECONDARY CARB OR A VAC. SECONDARY
Important:: CHANGE THE POWER VALVE TO A 3.5.
IT MIGHT SEEM SMALL BUT IT WILL WORK GREAT.
iF YOU CAN PUT A 1 INCH - 4 HOLE SPACER ON THE INTAKE THEN USE ONE.
iF NOT, RUN A 3/4 OR EVEN A 1/2 INCH FOUR HOLE SPACER.
THE ONLY THING THAT WOULD STOP YOU FROM USING THE 1 INCH SPACER IS YOUR HOOD CLEARANCE.
TIMING AT LEAST 34 TOTAL.
IF YOU HAVE A MOPAR PERFORMANCE DISTRIBUTOR THAT HAS THE ADVANCED CURVE ,THEN SET THE TIMING AT 36 TOTAL.
GOTTA LOVE MY CAPS LOCK.
caution """"disconnect the vacume advance hose from the distributor.you wont need it
You need to set your total timing and then drive the car and make sure that it does not ping.
MY CRANKING PRESSURE ON MY MOTOR IS 144 PSI. WITH THAT CAM.
BUT CHECK THE CRANKING PRESURE OF YOUR MOTOR WHEN IT'S DONE SO YOU KNOW WHAT YOUR MOTOR HAS.
YOUR GOING TO HAVE A LITTLE MORE COMPRESSION THEN I DO.
MY 318 HAS STOCK HEADS AND A MODERN STOCK PISTON.
BUT YOUR HEADS ARE CUT 360 HEADS ,SO CHECK IT.
ALSO CHECK THE VALVE TO PISTON CLEARANCE JUST TO BE SAFE.
GOOOOOD LUCK:salute:

PS>>>> the carb jetting sould be ok but your final jetting will be up to you ,seeing that your on top of that mountain you call home.
USE LUCAS CAM BREAK IN OIL \\\ ZINC ADDITIVE /// SEE YA :cya:
 
the paw cam mentioned has alot of duration,its advertised at 304,but in is actually 292 .it also has alot of overlap and a narrow lsa which means choppy idle.the isky cam also has a 108 lsa,but less advertised duration,and overlap,but the lobe is more aggresive.it wont idle as rough,and will have a bit better street manners.both will work.there are quite a few grinds out there that will do what you want.everyone has an opinion. this is a difficult topic,before i did my cam swap i asked 5 different people their opinion,and got 5 different answers.summit offers some "summit brand"cam and lifter kits for a really good price.the isky stuff is kinda pricy,but good.
 
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