so here's the question
Dec 21, 2005 | 09:12 PM
#11
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From: From Houma La. Living n Ellisville Miss.
I am running 5.3 heads on my lq4 they have the bigger valves and have been hand ported by pete @ cnc cyc heads in florida.
just make sure u have the fuel for the higher comp.
just make sure u have the fuel for the higher comp.
Dec 21, 2005 | 09:23 PM
#12
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From: Hudson, CO
Originally Posted by litreddevil
I am running 5.3 heads on my lq4 they have the bigger valves and have been hand ported by pete @ cnc cyc heads in florida.
just make sure u have the fuel for the higher comp.
just make sure u have the fuel for the higher comp.
good thread guys, lots of info
Dec 22, 2005 | 09:03 AM
#14
I calculate a LQ4 with stock 5.3 heads and .060 gasket to be 10.56:1. Mill those .030 and you get ~11.13:1 with the same gasket. 
Edit: made a mistake on the mill calculation.
Edit: made a mistake on the mill calculation.
Last edited by BigKID; Dec 22, 2005 at 01:58 PM.
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