Forged Street Small Block Chevy 377 Rotating Assembly, 5.7" Rods

These rotating assembly engine rebuild kits are designed for street use and include Keith Black forged pistons, Scat 4340 Pro-Comp I-beam rods and a Scat 4340 forged crankshaft.

All Scat 4340 cranks are 2-piece rear main seal, internally balanced and weigh approximately 51-55 lbs.

These assemblies will require balancing either by us or your machine shop.  All kits can be internally balanced.

All balancing is done with our state-of-the-art Hines balancer by race mechanics with over 30 years of experience!  A kit purchased with the optional balance job will ship in 24-48 hours. 

Rings and bearings not included. Journals are standard size. Due to larger journal side radius on this aftermarket crankshaft, you must use Clevite H-series, King bearings or equivalent.  Includes spacers for main bearings.

NOTE: Piston rings are not included and must be purchased separately.

Item Details

Includes spacers for main bearings

Kit includes:

• Scat 4340 Forged Steel Crankshaft
  • Straight shot and chamfered oil holes
  • Nitride hardened and shot peened
  • Lightening holes in all rod throws
  • Large radius on all journals
• Scat Pro Comp 4340 I-Beam Rods
  • Stroker clearanced
  • ARP 7/16 " cap screw bolts
  • Bushed pin
  • 5.7 " rod: 628 grams
  • Crank pin: 2.100 "
  • Wrist pin: .927 "
  • B.E. width: .940 "
  • Set of 8 rods
• KB Signature Series Forged Pistons
  • Dished
  • 2618 aluminum alloy construction
  • T-6 heat treated
  • 4.000 " bore pistons available in standard, .030, .040, or .060 sizes
  • 4.125 " bore pistons available in standard, .030 or .040 sizes

Kit includes:

• Scat 4340 Forged Steel Crankshaft
  • Straight shot and chamfered oil holes
  • Nitride hardened and shot peened
  • Lightening holes in all rod throws
  • Large radius on all journals
• Scat Pro Comp 4340 I-Beam Rods
  • Stroker clearanced
  • ARP 7/16 " cap screw bolts
  • Bushed pin
  • 5.7 " rod: 628 grams
  • Crank pin: 2.100 "
  • Wrist pin: .927 "
  • B.E. width: .940 "
  • Set of 8 rods
• KB Signature Series Forged Pistons
  • Dished
  • 2618 aluminum alloy construction
  • T-6 heat treated
  • 4.000 " bore pistons available in standard, .030, .040, or .060 sizes
  • 4.125 " bore pistons available in standard, .030 or .040 sizes