03-28-2010, 03:40 PM
LS1 Tech Administrator
Join Date: Nov 2001
Location: Victoria, TX
LQ4 runs a 7cc dish piston whereas the LQ9 and L76 run a flat top piston. The dish drops the compression of a 6.0L with L92 heads to 9.6:1. If you want higher compression, you can flat mill the head or run a thinner gasket.
You could run an LS6 cam with L92 heads and make over 400 flywheel horsepower with ease assuming you have an L76 intake and headers. This would be a great 87 octane motor.
__________________ 2013 Corvette Grand Sport A6
LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Cam Motion blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph at US Half Mile. 2016 Corvette Z51 M7
Magnuson Heartbeat 2300 supercharger, otherwise stock, 562rwhp, 591rwtq. 2009.5 Pontiac G8 GT
6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph Texas Mile 2000 Pewter Ram Air Trans Am M6
heads/cam 508 rwhp/445 rwtq SAE, 183.092 Texas Mile 2014 GMC Yukon Denali XL 6.2L
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