BBC 632-638 Callies Rotating Assembly, 16.9:1 Diamond Pistons, Fits SR20 Heads

CNC-Motorsports 632 638 Callies rotating assembly kits were designed for the racer who wants the best. This rotating assembly kit featuring Callies Magnum crankshaft, Callies Ultra H beam rods, and Wiseco forged pistons. This kit is designed for the racer looking to build all-out power backing American craftsmen ship quality. This rotating assembly kit will support 1500 "PLUS" horsepower applications. When you need the best, go with CNC-Motorsports "All American" kits.

Callies Magnum Crankshaft, 4340 Forged Steel "USA", 4.750 Stroke, 2 Piece rear main seal (Gen IV)
Callies Ultra H beam rods "USA", 6.700 Length with ARP L19 Rod Bolts
Diamond pistons, +29.94cc Dome, H-13 .185 wall tool steel wrist pins (1.120C/H) *Pistons fit Brodix SR20 and Dart 20 Degree Heads*
Vertical gasports, Moly skirt coating, 2618 material
Total Seal .043 Steel top rings, .043 napier second rings, 3/16 oil rings
High performance H series main and rod bearings included
Pistons will work for power adder applications.
Rotating assembly comes unbalanced, balancing is required before installation.
Compression ratio w/95cc chamber: 16.9:1
Compression ratio w/118cc chamber:
Compression ratio w/124cc chamber:
Short Deck kit, 10.180