Re: best way to increase hp in my 318?
[Re: Moparmad]
#2606732
01/15/19 01:00 AM
01/15/19 01:00 AM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
About to go away
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About to go away
Joined: Sep 2007
Posts: 14,889
up yours
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A magnum 318 would be a cam and intake swap. An LA 318 like the one you spec? Here's one build but I don';t think the 302 heads are a solution unless that's what you already have. I'd swap magnums on before I spent a nickle on 302 heads.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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Re: best way to increase hp in my 318?
[Re: Moparmad]
#2606749
01/15/19 01:32 AM
01/15/19 01:32 AM
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Joined: Aug 2007
Posts: 6,096 Valencia, España
NachoRT74
master
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master
Joined: Aug 2007
Posts: 6,096
Valencia, España
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There is a hotrod mag or some mopar mag link with an article about building a 400hp 318 with parts out of the box.
With a Charger born in Chrysler assembly plant in Valencia, Venezuela
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Re: best way to increase hp in my 318?
[Re: Moparmad]
#2606756
01/15/19 01:55 AM
01/15/19 01:55 AM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
About to go away
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About to go away
Joined: Sep 2007
Posts: 14,889
up yours
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Not sure where in Texas you are basing you humidity comment on, but Texas is a big place and yeah in Houston or eat of I 35 humidity is bad, You get out closer El Paso and not so. Or up in the panhandle.
Last edited by tommoparts; 01/15/19 05:11 AM. Reason: Being ads
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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Re: best way to increase hp in my 318?
[Re: Supercuda]
#2606763
01/15/19 02:08 AM
01/15/19 02:08 AM
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Joined: Nov 2003
Posts: 36,041 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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I would dial in the timing & the carb then later some EQ mag heads & you can reuse em when you on down the line swap in a stroked 360 (408). 4" cranks are cheap now & the KB pistons ain't too bad.
live every 24 hour block of time like it's your last day on earth
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Re: best way to increase hp in my 318?
[Re: NachoRT74]
#2606767
01/15/19 02:33 AM
01/15/19 02:33 AM
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Joined: Feb 2003
Posts: 7,982 Scranton, PA
Montclaire
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master
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Posts: 7,982
Scranton, PA
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There is a hotrod mag or some mopar mag link with an article about building a 400hp 318 with parts out of the box. That was Mopar Action. Did they use a magnum block? Either way it would be worth copying.
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Re: best way to increase hp in my 318?
[Re: Montclaire]
#2606908
01/15/19 01:44 PM
01/15/19 01:44 PM
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Joined: Aug 2007
Posts: 6,096 Valencia, España
NachoRT74
master
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master
Joined: Aug 2007
Posts: 6,096
Valencia, España
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There is a hotrod mag or some mopar mag link with an article about building a 400hp 318 with parts out of the box. That was Mopar Action. Did they use a magnum block? Either way it would be worth copying. found this: https://www.hotrod.com/articles/mopp-0409-318-engine-build/Old LA. But I was sure it was a diff article unless the article face was refreshed
With a Charger born in Chrysler assembly plant in Valencia, Venezuela
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Re: best way to increase hp in my 318?
[Re: Moparmad]
#2606931
01/15/19 02:17 PM
01/15/19 02:17 PM
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Joined: Jan 2003
Posts: 14,506 So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,506
So. Burlington, Vt.
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Easiest?
Probably a magnum style top end and a cam in the 220’s@.050, .470-.500 lift.
It’s likely going lose some grunt in that configuration........ you could shorten the duration up a bit to get some of it back.
Something like a Comp 268H should be plenty to get you well into the 300’s with a magnum style top end.
“Cheaper”(possibly) but less powerful....... put 1.88 intake valves in the current heads along with some mild porting, Comp 268XE cam.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: best way to increase hp in my 318?
[Re: Moparmad]
#2606970
01/15/19 03:33 PM
01/15/19 03:33 PM
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Joined: Jul 2007
Posts: 735 Pa. U.S.A.
moparborn
super stock
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super stock
Joined: Jul 2007
Posts: 735
Pa. U.S.A.
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To get 400 HP out of that 318, you are going to have to up your compression. Get a set of closed chamber heads(low cc),thin head gaskets, .022 range. A good cam,480-500 range. Performer style intake. Headers. A turbo or blower set up will get you there but it will be at higher price.
Last edited by moparborn; 01/15/19 03:34 PM.
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Re: best way to increase hp in my 318?
[Re: Twostick]
#2607083
01/15/19 07:01 PM
01/15/19 07:01 PM
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Joined: Jan 2003
Posts: 15,439 Val-haul-ass... eventually
BradH
Taking time off to work on my car
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Taking time off to work on my car
Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
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The usual bolt ons and spray the wee out of it.
Kevin Yeah, I was thinking the N2O approach, too. But it wouldn't be my pile of broken parts if I couldn't get a handle on the tune.
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Re: best way to increase hp in my 318?
[Re: Moparmad]
#2607169
01/15/19 09:17 PM
01/15/19 09:17 PM
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Joined: Jan 2003
Posts: 14,506 So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 14,506
So. Burlington, Vt.
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275-300-ish out if a 318 really isn’t that hard........ then it’s just a 100 shot.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: best way to increase hp in my 318?
[Re: 5thAve]
#2607264
01/15/19 11:57 PM
01/15/19 11:57 PM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
About to go away
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About to go away
Joined: Sep 2007
Posts: 14,889
up yours
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400hp isn't that realistic. If you're going to spend that much time and money on a 318 you might as well spend a bit more and start over with a 360. I think you could make a good case for it being cheaper to get 400 hp out of a 360 than a 318, even factoring in a core 360.
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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