Originally Posted by Jinx
Plus its optimized between 3.988''-4.065'' bore. The LS2s (has 4.000'' bored, snug in the middle) get a big benefit from just a unported swap alone. LS7 heads on a LS3 would be like putting LS3/L92 heads on a LS1/LS6.
won't fit. . .but L92 heads will fit on a 6.0L LQ9 block. . .with a mild cam, headers, L76 intake you can hit 500 hp with very little effort.