RB 180 Headers tight fit

SnowDrifter said
521 close chamber with stock Pistons

View attachment 1715882820

Thanks for the reply. Factory rated 73cc heads. Guessing those pistons are pretty deep in the hole. Or your using a pretty thick head gasket.

Regardless, a low comp BBM can still make some impressive power. Good luck with your header Fab. :thumbsup: