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Scat Engine Rotating Assemblies
Engine Rotating Assembly, Superlight, Forged Crank, Forged Pistons, H-Beam Rods, Chevy, Small Block, Kit
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Estimated Ship Date: May 18, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
1-40573BI
Part Type:
Product Line:
Summit Racing Part Number:
SCA-1-40573BI
UPC:
846091030478
Actual Engine Displacement:
6.3L/383
Rear Main Seal Style:
2-piece
Bore (in.):
4.030 in.
Bore (mm):
102.362mm
Engine Stroke (in.):
3.750 in.
Balanced:
Yes
Piston Material:
Forged aluminum
Piston Style:
Flat top, with two valve reliefs
Harmonic Balancer Included:
No
Flexplate Included:
No
Flywheel Included:
No
Pistons Included:
Yes
Piston Head Volume (cc):
+5.00cc
Wrist Pin Style:
Floating
Piston Rings Included:
Yes
Piston Ring Facing Material:
Plasmamoly
Piston and Ring Oversize (in.):
0.030 in.
Crankshaft Included:
Yes
Crankshaft Material:
Forged 4340 steel
Engine Balance:
Internal
Connecting Rods Included:
Yes
Connecting Rod Length Center to Center (in.):
6.000 in.
Connecting Rod Material:
Forged 4340 steel
Connecting Rod Beam Style:
H-beam
Rod Bearings Included:
Yes
Rod Bearing Undersize (in.):
Stock
Rod Bearing Undersize (mm):
Stock
Main Bearings Included:
Yes
Main Bearing Undersize (in.):
Stock
Main Bearing Undersize (mm):
Stock
Cam Bearings Included:
No
Gaskets Included:
No
Oil Pump Included:
No
Camshaft Included:
No
Lifters Included:
No
Timing Chain and Gears Included:
No
Plastigage Included:
No
Assembly Lubricant Included:
No
Quantity:
Sold as a kit.
Notes:
Features 43 lb. crankshaft. 560 GMS Q-Lite connecting rods include ARP 2000 rod bolts.
Scat Engine Rotating Assemblies
Scat engine rotating assemblies are available with either a high-quality Scat forged 4340 crankshaft or Scat's Series 9000 cast crankshaft, plus I-beam or H-beam connecting rods with 7/16 in. or 3/8 in. cap screw bolts. For maximum power and reliability, Scat adds rod and main bearings from King, Federal Mogul, or Clevite 77, depending upon the application—and pistons and piston rings made by such well-known manufacturers as SRP/JE, Ross, KB, Mahle, Diamond, and Probe. Kits with cast and standard forged pistons have standard rings; kits with premium forged pistons have file-fit rings. Nearly 800 Scat kits are available; order the package tailored for fitment with your engine application.
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Instructions & Calculators
Some parts are not legal for use in California or other states with similar laws / regulations
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