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Originally Posted by rocketman
I know the whole world thinks the LSx engine the way to go but,a sbc will still make the horsepower.stock to stock the Lsx is alittle better but when you modify them,the power isnt not much differnet if any.
But with you wanting a Ls the ls7 is the best factory block,next would be a Ls6 which is more available than the Ls7.about a 1/3 the camaro production in 02 used Ls6 blocks.Both engines have to have crank,rods,pistons for that kind of power level.
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I don't have any particular personal knowledge, but my impression is that the head/valve train design on the LSx engines is much better than the 23 degree stuff for the Gen 1 SBC's and that for a given displacement and level of tune, the LSx's will virtually always kick the Gen 1 SBC's rear. Would that it weren't so, since I have a lot of Gen 1 stuff ready to go for a 434 build, but oh well . . .