Just wanted for you to keep in mind that with a .041 compressed gasket your LQ4/L92 head combo will have 9.4:1 compression. With a .051 gasket it will be 9.2:1. Give or take .1
You'll have to keep the cam a bit on the small side for duration in order to keep it from being a dog down low.
If you look at the dyno graph of the engine built by CarCraft, when they went from the stock LQ4 heads to the L92 heads they actually lost a good bit of power from 2,200 rpm to 4,800 rpm with the largest loss of -21 ft/lbs at 2,200 rpm and -10 to -16 in the mid-range. Of course, after 5,000rpm when those big (260+cc) heads got into their grove they handed the stock heads....well, their heads. Also, the Hot Cam used in the CarCraft motor is JUNK when compared to other modern grinds for LSx engines. Try a G6x92-3 L92 specific cam or something similar. But only do so after you mill the heads down to about 64cc or less to bring compression up over 10:1. Also, invest in some ARP rod bolts if you're going to spin it to 6,800rpm like CarCraft did.
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