Krooser
Building Chinese Free Engines since 1959...
After looking at those spring pressures it's no wonder the rocker broke... pretty strong spring for a stock rocker.
I usually use a spring that's around 130 on the seat and 335 or so open pressure. That's for a solid lifter deal running up to 7,000 rpm. The springs in my current 383 are 140/425 on a solid cam... about the heftyest I'd run on my W-2 heads.
FWIW...
I usually use a spring that's around 130 on the seat and 335 or so open pressure. That's for a solid lifter deal running up to 7,000 rpm. The springs in my current 383 are 140/425 on a solid cam... about the heftyest I'd run on my W-2 heads.
FWIW...