What is the cc of valve relief on a trw flattop piston with 2 reliefs.
Need it to get my dcr.


Thanks

 

Most of them are around 5-6cc.

Don't forget that most of those have .020" extra deck clearance more than stock; in addition to whatever deck clearance the block had originally which is usually around .025". In other words, your pistons most likely miss reaching the deck by about .045". A MUCH larger effect than the valve reliefs.

 

Pistons are TRW hyper. with scat I beam rods .They checked out to .022 in the hole.

Thanks for your info. Sofakingdom