Generation IV Internal Engine - 408 lq9
02-10-2008, 09:35 PM
Im going with a 408 and i had some questions. I can still use my fast 90/90 combo from my ls1 right?
And would afr 225s 72cc bolt up or do i have to use l92 heads.
thanks i tried a search but couldnt find any info.
02-10-2008, 09:57 PM
you don't have to us the l92 heads. u could go with the fast setup and afr. the l92 setup would be better for your 408. we have cnc ported l92 heads on special just give me a call
02-10-2008, 09:58 PM
You can use either head but if you go with the L92s you will not be able to use your fast 90/90, you will have to use the L76 intake. So I Would use the AFRs and your fast intake.
02-10-2008, 10:36 PM
You can do either. I stuck with cathedral style heads on my 408. I'm very happy with the results. I haven't seen enough stellar horsepower #'s on the L 92's to back up their flow numbers. If you allready got a fast you might as well stick the the LSx style heads
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