factory head choice, 15psi
factory head choice, 15psi I have a forged ls2 403 and want to know which heads should i use for daily driver, street car. I have a set of ported 243's from corvette with sodium filled valves 64cc. Also have 317's ported by same machinist, guessing regualar valves 72cc.
car has max pullied d1sc, fmic
car has max pullied d1sc, fmic
Last edited by pdasterly; Oct 17, 2011 at 10:24 AM.
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Cathedral ports only?
I say 243s, with the 317s I bet that brings your compression down quite a bit with -20cc pistons. The fact that you want daily driver tells me you probably would like more compression better.
You should be fine with stock heads and LS9 gaskets and good studs at 15lbs.
Head CC will make that determination along with how far the piston sticks out of the head, head gasket thickness and bore etc. Mahle gives a generic rating based on a certain CC head.
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Verdad Gallardo LSAs have the same rectangular port as LS3/92s, so you wouldn't have to change your intake. You can get them cheaper too brand new, I got mine $315 shipped bare for the pair.
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If he currently has cathedral port heads/intake, he would have to change his intake for l92, lsa, etc.
Can't say on here, since he's not a sponsor, but it was a local shop here in town.
My bad, I misread his post about going to LS3 heads, I thought he already had an rectangular port intake. But yepp, if he is switching then he will have to get an LS3 style intake. LS3 intakes are not that expensive, and work good.
Can't say on here, since he's not a sponsor, but it was a local shop here in town.
Can't say on here, since he's not a sponsor, but it was a local shop here in town.
http://paceperformance.com/i-6255521...te-engine.html
"Cylinder heads - 12604860 aluminum L92 style with 68cc chambers"
