crankshaft differences

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Mar 17, 2004 | 08:58 AM

Flem

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TECH Apprentice

Joined: Mar 2003

Posts: 304

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From: ferndale, MI

crankshaft differences

what exactly is the difference between the early LS1 motors and the Later ones? I've heard there's a difference on the rear mounting flange, Is this true and what years are affected.

Mar 17, 2004 | 02:56 PM

ktmrider

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Joined: Apr 2003

Posts: 1,107

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From: Albuquerque, NM

Yes, I read somewhere that the 6.0/5.3 crank flange surface were about 0.200" thicker. This was only an issue on the 99 to early 00 parts. Not sure how to check this?