So I have an 01 z28 with the ls6 intake. I was given a 102mm throttle body but I believe it’s designed for the ls2 as it is a 4 bolt pattern and quite wide. Seems like the only way I could use it is if I got an adapter plate which sizes down the opening to go through the stock area. It seems to me like using a bigger throttle body that has to get funneled down would kind of defeat the purpose of using the larger one. It is a speed master 102mm. Just wanted to get some thoughts on the idea.

 

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...........Consider: If it all funnels down through a 2 inch Inlet valve, it's not going to gain anything except TUNING Practice.

 

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...........Consider: If it all funnels down through a 2 inch Inlet valve, it's not going to gain anything except TUNING Practice.[/QUOTE]

I pretty much figured it wasn’t really worth it but was curious to get some feedback. I got the speedmaster for free and it seems to be a fairly nice name brand throttle body. When I looked at how the adapter funnels the opening size down to make it fit it seemed pretty pointless to consider.

 

Speedmaster is NOT one of the premier names in automotive performance.
Low prices accompanied by equally low levels of quality.