Originally Posted by INTMD8
I used these on my twin turbo LT1. Decent but MLS is far superior. (I would never use the felpros again)


I ended up with some leakage (combustion gases not coolant) after a standing mile run at the 900hp level. Would not be an issue with MLS


That's impressive!

Did they chew up the head noticeably?


Rich H.

Esse Quam Videri