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LQ4 Crank into my LS1??

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Old 04-19-2010, 09:32 PM
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Default LQ4 Crank into my LS1??

I have a 99 LS1 and I need a new crank due to a spun rod bearing. I found one from a 99 LQ4 and was wondering if it would be a direct replacement. I have a T56 transmission if that makes any difference.

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Old 04-19-2010, 09:49 PM
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It will work, but it will need to be balanced to your assembly, as it is heavier than a 5.7 crank.
Old 04-20-2010, 10:23 AM
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does it stick out of the rear seal more?? Will I need a different flywheel??
Old 04-20-2010, 11:28 AM
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Some of the truck cranks did have a thicker flange at the rear. The best way to know if yours does is to measure it and see really. Same flywheel and all, so long as that flange isn't thicker.
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