The heads are based on there 225 cc intake runner head. They have been worked to a 238cc runner. The heads flow 330 cfm at .600" lift on the intake and 245 cfm on the exhaust. I will post the lift #'s throughout the lift later. The combustion chambers are 72cc. The intake valve is a 2.08" SS by REV and the exhaust is a 1.60" Inconnel piece. If anyone knows AFR's heads, they have VERY thick decks. They are about .750" thick. The retainers are Titanium and the springs are CompCams new 921 dual spring.
The bid deal with these heads for guys that don't know the LS1 world is that they are the first aftermarket head for the GEN3 motor. Up until now we have been forced to rework LS6 heads for big flow numbers. These heads where cast with improvements that we couldn't get from a stock casting.
For you guy's building GEN3 motors in the 450-600 FWHP range, the also have the 205cc head which works awesome as a bolt on power maker. The 225 head is for large displacement and/or forced induction. The big runner would hurt a stock displacement motor on the street.
Attached is a picture of the ports!
Howard
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62' Chevy 2, 427 ci twin turbo, 4L80E, Ford 9", AME 2" x 4" frame w/C5 front end......
Let me know when you are ready to make the move. We do a ton of LS1 work up here with my Redline Motorsports business. I have some killer stock displacement engine packages that make 425-460 RWHP in the F-bodies and C5's. Thats about 520-540 at the flywheel. That is so streetable and reliable that you can't believe it!
This offer goes out to any of you guys wanting to work with the LS1 engine!
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62' Chevy 2, 427 ci twin turbo, 4L80E, Ford 9", AME 2" x 4" frame w/C5 front end......
Brian Hobaugh SCCA National Tour June 2014
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Short clips: Goodguys Pleasanton autocross and pit videos
Novacane gets a set of AFR 225 LSx heads
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