Are fel pro ss72527 valve seals positive type or umbrella? They look like positive on Summit's picture but the description says umbrella.
I was going to use these on 3782461 heads. I measure the valve guide as 0.580 and valve stem as 0.350. The valve spring is comp cams 981.
I was going to use these on 3782461 heads. I measure the valve guide as 0.580 and valve stem as 0.350. The valve spring is comp cams 981.