R-3 48 Degree Block.P4876673 Block Casting number P4532909
Rough 3.98 bore Siamese cylinders 9.60 deck height.
New in the box rotating assembly.
Bloomer Performance Engineering Forged AISI 4340 Crankshaft 4.125 stroke
Alum. 70 over pistons,Bearings,Rist pins,retainers,Rings.H-beam rods
Never...