Are there any differences in the LS1 block from year to year? I have a 99 LS1 in my 2001 WS6 and the 2001 LS1 on the engine stand. I am going to build the 2001 LS1, but just wondered if there are any differences in the years of blocks.

 

no differences in ls-1 blocks, but some 01-02 cars got an LS-6 block from the factory.

 

you couldnt bore a 98 ls1 out but about 0.05 (i've heard of 0.10 although). I *think* the 99-02's are the same.

 

i thought it was an LS6 Intake.....not block

 

Yeah, I knew about the LS6 block in some 01's and 02's but I was unsure about the LS1 block.
Thanks

 

no, ALL 01-02's got the ls-6 intake, but something like 10-25% of 01-02's got an LS6 block as well, it doesn't make more power than any other fbody.