- 4340 forged steel lightweight crankshaft, forged 4340 steel lightweight H-Beam rods with 7/16" ARP 8740 rod bolts, Forged Mahle lightweight pistons with performance ring set, Performance rod and main bearings. Rotating kit is unbalanced, Internal balancing required before installation.
Compression Ratio with 58cc 11.3:1
Compression Ratio with 64cc 10.5:1
Compression Ratio with 76cc 9.3:1
SKU ESP-12075 Manufacturer Eagle Vehicle Make Chevy SB Rod Length 6.000 Crankshaft Material 4340 Forged Steel Piston Type Flat Top Piston Material Forged Balanced Assembly No Balance Type Internal Rear Main Seal 2 Piece Crankshaft Stroke 3.750 Piston Brand Mahle List price No