I want to use this pump in the L86 project (Meziere WP118HD) Camaro, Corvette, and Silverado all have different part numbers. I assume this is because of different pulley mounting depths or maybe pulley diameter. But us the mounting flange the same?

 

Why not call Meziere and find out??

 

I could be wrong but I think that pumps for the old Lt1/Lt4.

 

Thats the old not the new. Why GM did this with the LT1 and LT4 is so stupid.
https://www.meziere.com/Products/Coo....aspx?ext=.pdf

Here's the new LT1 "2013 and up"

https://www.meziere.com/Products/Coo...ace-Model.aspx

 

Oh man thanks. I thought something looked off. And looking at the newer LT1 they could've done the same thing, just make a cassette type pump instead of a whole unit.