Hemirunner
Well-Known Member
I don’t care much for the full groove mains. I prefer the 3/4 grooves for the added surface area where the oil wedge forms.My 383/432 Stroker - New motor
180 degrees hot idle 650/700 Rpms
Full groove main bearings - .002 / .0024 Clearance mains/rods
10w30 Valvoline VR1 Idle 18-20 psi - Cruise 70 psi
20w50 Valvoline VR1 Idle 25 psi - Cruise 75 psi