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budget 318 build

  
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budget 318 build

 
duster318 duster318
New User | Posts: 45 | Joined: 08/07
Posted: 08/23/07
11:29 AM

I want to add around 150 horsepower to a stock 318 without having to spend too much money and I want to replace as few components as possible.  Someone please give me some input on what I should do.  Also, how much HP will a 600 cfm carb, intake and mild cam add to a stock 2 bbl 318?  

blaxima97 blaxima97
New User | Posts: 1 | Joined: 08/07
Posted: 08/24/07
11:50 AM

Not sure where you are starting from, but there is a pretty decent article on the website about building up a 318 to around 400 horsepower.

http://www.moparmusclemagazine.com/techarticles/mopp_0409_318_engine_build/  

duster318 duster318
New User | Posts: 45 | Joined: 08/07
Posted: 08/24/07
01:36 PM

Thanks, but I'm only looking for 300 to 350hp and I don't want to spend a lot of money.  Would only a 600 cfm carb, and a mild cam get me from 175hp to 300hp?  

67dodge-#002 67dodge-#002
New User | Posts: 37 | Joined: 08/07
Posted: 08/29/07
07:00 PM

If you want 300hp out of your 318 this will get you there: Bowl port the heads and have the valves back-cut 30*, Edelbrock RPM intake(Airgap is more money and the rpm and rpm airgap are basicly the same), Any 600cfm carb, Comp 20-309-4, Headers and dual exhaust. This combo will give you great bottom end and will make 300hp.

The cam, intake and carb alone will not get you there, you need more head flow. So bowl port the heads, or install some 360 heads.

Good Luck  

monaco55316 monaco55316
New User | Posts: 1 | Joined: 08/07
Posted: 08/31/07
07:15 AM

Iam in the same boat with my 318 in a 75 Plymouth Scamp. I have a mild cam, medium rise intake, 600 cfm holley, dual exhaust and 3:55 gears. ITS A DOG! Do the 360 heads bolt on and will they bring this motor to life! This is a 140 HP motor stock and its hard to beleive 300 HP from this set up. HELP  

alf44 alf44
New User | Posts: 4 | Joined: 09/07
Posted: 09/09/07
04:11 PM

Icon Quoteduster318:
I want to add around 150 horsepower to a stock 318 without having to spend too much money and I want to replace as few components as possible.  Someone please give me some input on what I should do.  Also, how much HP will a 600 cfm carb, intake and mild cam add to a stock 2 bbl 318?

try finding heads and intake from 1989-1992 318 or 360, as these are better heads ,better combustion(heart shaped chambers) and will increase compression a bit also. also i think that a mild cam with these heads shaved.020to .030 and the intake shaved to match will give you the power you are looking for on the cheap, at least in my area they are cheap Laugh  Smile  

duster318 duster318
New User | Posts: 45 | Joined: 08/07
Posted: 09/13/07
12:52 PM

Thanks.  What's the lift on that cam you suggested?  

67dodge-#002 67dodge-#002
New User | Posts: 37 | Joined: 08/07
Posted: 09/27/07
10:15 PM

The 80's and early 90's 360 were not and never will be a heart shaped chamber. They are open, just like every other non magnum 360 head. This is fact.

The 309 cam has a 268/276 duration and a .464" lift. Its a great cam for the street.  

62dart 62dart
New User | Posts: 1 | Joined: 10/07
Posted: 10/06/07
11:45 PM

hey i would start with a racing cam and a carb. but honestly i have a stock 318 in my 1962 dodge dart and it is putting out 300 horses easily so i dk wat to say.  

Dutch440 Dutch440
New User | Posts: 3 | Joined: 10/07
Posted: 10/09/07
05:45 PM

I watched my dad for years take low hp 318's and push them up to the 275 to 325hp range all the time for guys and it was always done with out breaking the bank.  I read the back traffic and have to agree with what the other guys had to say.  I often saw my dad slap on 1970 340 4bbl intakes and a carter along with a 1970 spec cam, headers and some tuning and the combo's always seemed to work really well.  I just did one this past winter for a guy and he was not disappointed when I was done.  Also evey time I have seen or did this my self it was with out having to touch the bottom end of the engine.  Good luck  

shermsbase shermsbase
New User | Posts: 1 | Joined: 10/07
Posted: 10/12/07
01:02 AM

hey maybe someone could help with some advice. I have a 1972 duster with a 318 that is now a four barrel with  dual flow masters and headers and a edlbrock intake. But I was wondering what else could I do to increase the horse power with out spending to much. Any ideas?  

mr.ball mr.ball
New User | Posts: 2 | Joined: 11/07
Posted: 11/20/07
04:59 PM

I need some advise I have a 73 dart and want to ad msd and everything that goes with it i have a 318 and i want to keep my 2bbl on it.how would i go about doing so, also i want to put a beefier altenator on.I need some ideas, anyone's input would help. thanx  

RBolig RBolig
Moderator | Posts: 948 | Joined: 12/03
Posted: 11/28/07
08:16 AM

Shermsbase, For starters, how big did you go with a carburetor choice? I hope not larger than a 650? Also, which Edelbrock intake are you using? If you have the right parts up top, it sounds like a cam may be your next purchase. Without getting into head porting and short block rebuilding, you're very limited on your potential power output.  
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Some people are like Slinkys; they're not very useful, but fun to watch when pushed down the stairs.

RBolig RBolig
Moderator | Posts: 948 | Joined: 12/03
Posted: 11/28/07
08:27 AM

Icon Quotemr.ball:
I need some advise I have a 73 dart and want to ad msd and everything that goes with it i have a 318 and i want to keep my 2bbl on it.how would i go about doing so, also i want to put a beefier altenator on.I need some ideas, anyone's input would help. thanx

Adding an MSD ignition is as easy as getting one, and reading the directions. You can either hook it into your existing electronic distributor, or get and MSD distributor with the ignition box. The choice is yours.

Upgrading your alternator can be a good AND bad upgrade. before you do so, you need to make sure your wiring can handle the extra output of the larger alternator. Many guys have burned up their cars after adding the higher amp alternator, because the wiring could not handle it. If your wiring is suitable for such an upgrade, just get the alternator for your car with a higher output. This is usually accomplished by looking up a replacement alternator at your local parts store for your car. many times, they will list different amperage outputs.  
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Some people are like Slinkys; they're not very useful, but fun to watch when pushed down the stairs.

70tripower 70tripower
New User | Posts: 1 | Joined: 12/07
Posted: 12/25/07
05:33 PM

I have a '79 cordoba 318. I'm also interested in the same. I'm having a hard time trying to find headers for this car. Any suggestions? Also, which is cheaper, bowling the stock heads or a pair of 360 heads.  

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