Old School 340 Build

Had a feeling!

I'm curious how well those total seal gapless rings worked for yah. I'm pulling my heads off this winter to give them a full port job. And stick a solid roller in. I've been thinking about maybe pulling the pistons and give the gapless rings a try. See if I pick up a couple extra PSI.


Unless I'm running gas ports, I use gapless tops.

I've seen them reduce blowby by 8-10 CFM. That was on a 400 Chevy and they suck at ring seal. They are in my engine now.



Woooooops....wasn't supposed to let M.O. Know I had something.