317s vs ls3 heads on 370 procharged
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317s vs ls3 heads on 370 procharged
I've did some research but didn't see much comparing the 2 with boost. Im building a somewhat budget build 370 with a D1 procharger spinning at its max. I'm looking to maximize the bottom end as most cost effective as possible. I already have a set or 317 heads but they will need cleaned, checked and a valve job at minimum. ive also seen ported ls3 heads sold by vendors for roughly $1300ish. Either way i have to buy a cam to compliment either and the valve train to match the setup. I know the 317s are proven heads but would spending $1300 on ls3 heads really gain me much on a boosted setup over the 317s?
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The LS3 style ports flow much better than the 317 ports do, there is no comparison. Bob
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I agree! Bob
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#9
Not trying to high jack ur thread but as i am gonna be building a 370 also and already have a set of ls3 heads i didnt have to spend money on but my next question im trying to figure out is either finding a stock intake for it again or is it worth spending money on like a holley high ram?
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Not trying to high jack ur thread but as i am gonna be building a 370 also and already have a set of ls3 heads i didnt have to spend money on but my next question im trying to figure out is either finding a stock intake for it again or is it worth spending money on like a holley high ram?
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#12
I only have stock 6.0 intake and running ls3 heads i have to get a new intake either way so trying to figure out wat would be a good one to get? The holley or any others? Will be running e85 th400 fi s480 probably and in a roughly 5000lb truck. Power wise idk say 7s ?? Thanks
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I found a set of brand new LS3 heads on here in the classifieds section for $675 shipped. LS3 heads in stock form should still outflow a set of ported 317's. And The LS3 intake manifold also moves a ton of air in stock form and they're cheap.
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From what I gather, lsa heads are the best and strongest but ls3 heads will do fine for my power level (under 900) and regardless will be a step up from my 317s. Sound about right?
#15
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Yes indeed, a huge step up from the 317 heads in cfm. Bob
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My buddy makes 1190whp on BONE STOCK ls3 heads & intake with a precision 8891 and standard size head studs. All I'm the tune and packing the right cam to make sure your cylinder pressure is where it needs to be. If you can find LSA heads for a good deal go that way, I would buy either one however
#17