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Which Heads - PRC LS6 or 5.3L?

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Old Sep 26, 2009 | 10:48 PM
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Default Which Heads - PRC LS6 or 5.3L?

2001 camaro SS, LS1 motor, 6 speed, LS6 intake, 228 cam .585 lift 112 lsa, LT headers, ORY-pipe. Maybe getting a FAST 92/92.

Which heads will give Me the most RWHP gain, PRC (LS6 or 5.3L) stage 2.5 ported Heads?

Thanks
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Old Sep 26, 2009 | 10:52 PM
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I ran the prc 5.3 heads on my truck and liked them but IMO I'd do the ls6 heads
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Old Sep 26, 2009 | 11:00 PM
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The LS6 heads should flow just a little bit more. A few cfm's different is all.
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Old Sep 27, 2009 | 08:21 AM
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If done properly, at correct chamber size (all being equal), the 243s will win.
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Old Oct 1, 2009 | 06:00 PM
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I was under the impression that the boost in compression would create more power (as long as they flowed the same). I vote for the 5.3s, it is a proven setup on the forum.
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Old Oct 1, 2009 | 06:51 PM
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damn I wanna know the same thing.
I'll be running the ms3?
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Old Oct 1, 2009 | 07:37 PM
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You could mill the LS6 heads some if you want more compression.
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Old Oct 2, 2009 | 04:33 AM
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Originally Posted by TURBO6.0L
You could mill the LS6 heads some if you want more compression.
true, but doesn't milling hurt actual airflow, possibly countering the slightly higher cfm readings of the ls6 heads?
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Old Oct 2, 2009 | 09:07 AM
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not if you mill .030 or less, above that you start registering a slight decrease.
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Old Oct 2, 2009 | 09:22 AM
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Like stated, the LS6 heads will make more and better power than the 5.3L heads when setup properly. The 5.3L heads are very popular, due to their price however! We can mill the LS6 heads a bit to bump your compression up, without sacrificing your piston to valve clearance on a stock short-block for no extra charge when you purchase them new!
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Old Oct 2, 2009 | 11:06 AM
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Ah ha! Put me in my place good. Well it's always great to learn something new.
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Old Oct 2, 2009 | 11:16 AM
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The LS6's offer better flow, even after porting, than the 5.3L heads.
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Old Oct 2, 2009 | 11:20 AM
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Don't forget the PRC 215 heads as well! If you use your spring kit you'll get a aftermarket casting head with smaller runners, your choice of chamber size, better p/v, etc for under $2000!!!

http://www.texas-speed.com/shop/item...d=993&catid=20
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