Cracked Block????
08-29-2007, 04:26 PM
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Cracked Block???? anyone here ever hear of cracking an lsx block because of too much power or running your engine over 5500 rpm? I was told by a guy at a reputable machine shopp that the lsx engines were not built to handle anything over 400-500 hp before they become susseptible to cracking breaking rods etc. I thought the lsx blocks were the coolest **** since sliced bread. Lets hear some opinions, or better yet facts.
08-29-2007, 04:31 PM
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Originally Posted by TUCKZ28SS
anyone here ever hear of cracking an lsx block because of too much power or running your engine over 5500 rpm? I was told by a guy at a reputable machine shopp that the lsx engines were not built to handle anything over 400-500 hp before they become susseptible to cracking breaking rods etc. I thought the lsx blocks were the coolest **** since sliced bread. Lets hear some opinions, or better yet facts.
There was even one guy, I believe it was Roofer Dave, who ran a stock LS1 block, forged rods and pistons, stock crank into the 7's with over 1000rwhp.
Mighty Mouse was using a LS2 block and making 1000rwhp..
The blocks will go to 1000hp, so will the cranks.. the rods and pistons will not, they give around 500-700.
08-29-2007, 04:59 PM
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well the reason i ask is the shop has my motor and at only 50k miles it spun a bearing and he told me that the lsx engines are notorious for having that problem. I bought the car because i thought the ls series engines were the best thing smoking
08-29-2007, 05:30 PM
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spun bearings are the result of either bad oiling/ low oil or you don't have the upgraded rod bolts. 01-02 cars have the better rod bolts and spin high rpm ***** nilly with no worries. 97-00 cars, the bolts are lower tensile and can actually stretch allowing a bearing to spin if the rpm's get too high.