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budget 318 build

  
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budget 318 build

 
3404spdvaliant. 3404spdvaliant.
Enthusiast | Posts: 722 | Joined: 12/07
Posted: 02/04/08
01:09 AM

If you have stock 318 heads then the manifold is a mismatch, ports are way bigger than the heads ports. For street 318 2 1/4-2 1/2 pipes.
Besides that if your trans is slipping it's gonna run slow.
I'd address trans first then the manifold -unless you have 360 heads.
Fix that then get 2100 stall converter. BTW good cam choice.  
age is no lock on brillance

 
mopar79 mopar79
New User | Posts: 24 | Joined: 02/08
Posted: 02/04/08
10:18 PM

I got the stock heads. I did figure my piping is way too big because I have no torque. What trans. would you recommmend. It's going to be a street/daily driver. What do you think my hp should be at right now? What manifold would be good? Why 2100 stall converter? I appreciate the help keep em' coming. Thank you.  

 
3404spdvaliant. 3404spdvaliant.
Enthusiast | Posts: 722 | Joined: 12/07
Posted: 02/04/08
11:32 PM

Heres the deal with the pipe diameter you will make more ultimate hp with no exhaust pipes if the carb was tuned/richened to do so. But on the street you need back pressure/smaller pipes to help under the cam range. Thats right! small pipes pick up the torque under the cam range.
Racers who run huge pipes or no pipes don't run under their cam range, why would they if they are trying to win.
2100-2200 stall is what I would use for your cam. WOT of the line w/2100 stall will put you right into the power band of that cam=no waiting for the torque to come on.
904 w/b&m shift kit 3.8-4.2 kickdown lever.
with stock 318 heads its hard to beat the performer 318-360 manifold, ports will match your heads=more power.  
age is no lock on brillance

 
mopar79 mopar79
New User | Posts: 24 | Joined: 02/08
Posted: 02/05/08
08:45 PM

So 2 1/2 inch piping is the way to go huh? WOT? I was thinking, is there a good MOPAR 4 speed? If so why not that instead of a 904 3 speed? I have a 3 speed right now but I don't know what tranny it is. I have the edelbrock performer intake, are you talking about the Performer RPM? If I go with this route what do you think my HP would be at?  

 
3404spdvaliant. 3404spdvaliant.
Enthusiast | Posts: 722 | Joined: 12/07
Posted: 02/06/08
07:16 PM

WOT= wide open throttle.
All Mopar A-833 4speeds are good. Tranny choice is personal preference.
You said you had a performer RPM which is wrong for your 318 heads, page 3.
With headers, the right intake,600 carb, 268 cam, tuned, 275hp +/- .  
age is no lock on brillance

 
mopar79 mopar79
New User | Posts: 24 | Joined: 02/08
Posted: 02/06/08
11:42 PM

So an A-833 wouldn't be a bad choice? What is the price range on onf of those? Anything with an overdrive? I got headers, 600cfm, and the 268 cam. So I just need the piping, tranny and intake right? What intake would you suggest? How do I know what to get it tuned to? Anything else you suggest to get them horses (bolt on). My tranny feels like it is over reving I don't have a tacht so I can't tell, but when I step on it my tranny feels like it's jsut spinning but my truck isn't really going anywhere still think I should get a new tranny? I really do apprciate the help.  

 
mopar79 mopar79
New User | Posts: 24 | Joined: 02/08
Posted: 02/06/08
11:47 PM

Is the A 833 manuel or auto? I need an auto?  

 
RBolig RBolig
Moderator | Posts: 656 | Joined: 12/03
Posted: 02/07/08
05:57 AM

The 833 is a manual transmission. If you are looking for an auto overdrive, the only company I know of that makes a unit to fit is Keisler. It's a computer controlled unit sold as a complete kit--not sure of the cost.  
--------------------


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duster318 duster318
New User | Posts: 45 | Joined: 08/07
Posted: 02/08/08
06:54 AM

I've heard that putting headers on an A-body is a real pain.  Can I get by without them, or would the power gain be worth the effort?  Should I install them with engine out or in?  Also, the car is power steering.  Will that cause any problem?  

 
3404spdvaliant. 3404spdvaliant.
Enthusiast | Posts: 722 | Joined: 12/07
Posted: 02/08/08
10:57 PM

Yes this true it can be a pain with the motor in the car. If the motors out it becomes a lot easier.
Also because headers will hang low & off of the flange on 318 and are prone to leaking, you should slot the bolt holes on gasket lower and tape off upper part of end holes to hold gasket high on studs then torque header to head.  
age is no lock on brillance

 
magnum05e magnum05e
New User | Posts: 8 | Joined: 02/08
Posted: 02/09/08
05:24 PM

hello, doing my 318 over , putting in a 340 six pak cam,headers, edelbrock permormer intake, edelbrock 600 carb, stock pistons, not sure of the heads, thinking of going with getting them ground for 160- 202 valves,just looking to get some more performance from a stock engine,and advise would be great or am i on the right track,thanx ernie  

 
3404spdvaliant. 3404spdvaliant.
Enthusiast | Posts: 722 | Joined: 12/07
Posted: 02/09/08
05:55 PM

If you run that cam with stock pistons & 318 heads 1.88- 1.60 you should put 2 extra degrees into the cam timing from what it calls for.
If you run 340- 360 heads with either valve size you better get that piston alot closer[higher compression] to the valve in order to speed up signal to to the port.
See those ports are a little to big for the  mild street 318, and therefore lack the velocity needed to have good low speed characteristics. Thats it in a nutshell.

Look at Keith black pistons on line they have an 9.5 & 11.1. That 11.1 would be the only way to run 360 heads, thats my opinion.
Otherwise the 9.5 would work great with the 318 head 1.88-1.60  
age is no lock on brillance

 
tyce09 tyce09
New User | Posts: 3 | Joined: 02/08
Posted: 02/14/08
07:36 PM

i have a 74 valiant with a 318 im told they have closed chamber heads and to keep them im trying to build decent hp but on a serious budget i have a 600 cfm edelbrock ive been told that is plenty for this motor and to bolt on a 360 or 340 4 bbl intake and to port match the heads and to tulip the valve chamber and put just the 360 intake valves in it i can do the porting my self im not sure about the tulip or how to do that or what it will do and i was wandering how much it will cost to put in the 360 intake valves what hp should i expect from this and is there a decent stock cam that would go good with this and where would i find it i know there is a lot of questions here but any help would be greatly appreciated  

 
73golddusterkid 73golddusterkid
New User | Posts: 7 | Joined: 02/08
Posted: 02/15/08
10:04 PM

I've got a 73 Plymouth Duster with a 318. I had the block bored .030 over, used a FelPro rebuild kit with forged pistons. I also have swirl port heads, elelbrock performer manifold, mopar .474 lift cam, MSD 6A ignition, billet distributer, TTI headers and 2.5 inch exhaust. After having a 727 rebuilt and put in it ran like crap! The car would just bog when i slammed the gas. I just recently pulled motor and tranny and bought the Aerohead racing rebuilt 360 heads with 2.02 intake and 1.60 exhaust valves with thinner head gaskets. I've been thinking of going with a roller cam and valvetrain. I personally think my tranny is the weak link, what do you guys think?  

 
3404spdvaliant. 3404spdvaliant.
Enthusiast | Posts: 722 | Joined: 12/07
Posted: 02/15/08
10:18 PM

Your 727 is overkill, takes more hp to run 727 & you'll never break the 904 with 318.
If you read the rest of the thread you'll get the jist of why your 318 is doggish.
the ports are to big/not enough velocity also whats your compression ratio, and did you degree your can in.  
age is no lock on brillance

 
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