Originally Posted by A34
Guys,

Does anyone know if a TRW piston from the mid-90's is the same as today's version from Speedpro? Does that compression sound right?

8.66 sounds like a slug.

Thanks!!


Yes, there are essentially the same and have the same compression distance of 1.991". Depending on head gasket, actual head cc's, and any decking the CR can be anything from 8.35 to 9.0. The 8.6 is probably close.

If you're truly looking to up your performance, think now about cylinder heads. If budget does not allow for both pistons and heads, I would consider heads before pistons.