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317 heads on a 5.3

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Old 04-23-2010, 06:26 AM
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Default 317 heads on a 5.3
k guys got what i think is a decent deal on some 317 6.0 heads complete 60k miles. i am going to put these on my 5.3 with 100k suggestions?warnings?
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Old 04-23-2010, 09:16 AM
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you'll lower your compression if you put these on
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Old 04-23-2010, 12:10 PM
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Yes, you'll have low low compression...the 317's have 72cc combustion chambers
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Old 04-23-2010, 12:42 PM
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above response = it's going to drive like a old dog.

Unless you are FI forget about the 317's. You can find some decent deals on 799/243 heads and mill them a bit to keep your CR.
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Old 04-23-2010, 12:44 PM
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When I was at the Englishtown swap meet I must have seen at least 5 sets of 243 heads and I wasn't even looking...one set was in a TrickFlow bags and box...wonder what he pulled those off for
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Old 04-23-2010, 01:17 PM
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241 are another good option, but 317s are gonna put your compression in the 8s
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Old 04-24-2010, 07:36 PM
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241 are not worth it. same head wit few cc bigger chamber. 243/799 if he is gonna go with a stock head
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Old 04-25-2010, 08:02 PM
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What heads do you have now? Might be worth it just to have yours worked over. If the 317s are cheap enough, buy and resell them
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