afr heads
#1
Junior Member
APPRENTICE
Thread Starter
Join Date: Feb 2009
Posts: 19
afr heads
Im building a 400sbc it .30 over setup for 11-11.5:1 comp turning 6700-7000rpm now i found a good deal on afr heads except there 195cc runner wit 2.05/1.60 would that be too small to feed the 400 or not ive seen decent dyno sheets bringing 560hp at the fylwheel but i want more towards 600 would it be reachable with those heads
#3
Junior Member
JOURNEYMAN
Join Date: Jan 2005
Posts: 27
AFR and most head mfrs would probably tell you these are too small for your application. AFR suggests 180 runners for 327-350 small blocks and 195 for 383-400 motors, but for street motors. You might be able to get by if the heads are heavily ported. I think they will run out of air on top end. I am running a set of 180 AFRs on a 406 but only because they were on a 355 and my car totalled in a fire. Check out AFR's website. I found their tech line very good. Great heads. Good luck. Mep
#6
Junior Member
APPRENTICE
Join Date: Apr 2006
Location: New Haven, CT
Posts: 16
Re: afr heads
Originally Posted by rhino058
Im building a 400sbc it .30 over setup for 11-11.5:1 comp turning 6700-7000rpm now i found a good deal on afr heads except there 195cc runner wit 2.05/1.60 would that be too small to feed the 400 or not ive seen decent dyno sheets bringing 560hp at the fylwheel but i want more towards 600 would it be reachable with those heads