SBM Edelbrock/Speedmaster Head Data
Just modifying some 2.02 x 1.60 Poly heads for a Schneider 0.525 camshaft they did for us.
That is the largest Poly camshaft we can grind with current blanks available.
Crane dual valve springs is the only ones that would fit and take 0.550 lift.
The Hinkles got Compcams to do a Rollercam for them, trick Poly stuff indeed.