Valvetrain + eddy heads ?

Nat said

Agree with Rumble , adding adjustable 1.6 rockers sure helped my 340 picked up 10-20 hp peak hp moved from 5600rpm to 6200 rpm

Click to expand...

Thanks man and (OP) now you know I wasn’t kidding. practically free HP with added rpm.

Let it breath deep my friends.... breath deep...

I should do videos in my retirement.....
This would be an awesome one.