facts about 317 heads
10-23-2009, 03:22 PM
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facts about 317 heads how are theres heads? they came on my LQ4 , , i know my motor only has 9.4:1 comp .. if i was to shave the heads say .030 , to bump up the comp and run a texas speed tsunami cam .654 /.609 lift , will i have P,V clearence problems ? and how will it perform ? what will the comp be .
Last edited by Dickie-311; 10-24-2009 at 06:43 AM.
10-24-2009, 10:03 AM
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A friend of mine just sold a set of 317 heads, the machine shop said they are the exact same head as the ls-6 243 heads same valve size and intake runners. They do however have a larger combustion camber, I think 71cc on the 317 heads and 64cc on the 243 head. I have not ran them personally but I put a set of 243 heads on a 6.0 and the compression jump seemed to help it a lot. I know a few people who actually look for the 317 heads for boost applications. If you are wanting N/A you might find someone to trade with instead of cutting a set of heads that much. I always seem to have sealing problems along the intake when I have heads cut that much, but that is on old SBC stuff never cut heads for a LS engine.
