Bare Engine Block #450020 For Small-Block Chevy W/ 2-Piece Rear Main Seal


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Edelbrock Part # 450020 Small-Block Chevy Cast Iron Engine Block is cast and machined in the U.S.A. and made to last. Being that Edelbrock engine blocks are cast and machined in the U.S.A. allows us to precision machine them to our very own specifications. Engine block part # 450020 is the perfect starting point for any Small-Block Chevy high performance engine build especially when used with an Edelbrock Total Power Package. When it comes to starting with the right base for your engine build... make sure to choose the one made right here in the U.S.A. Edelbrock part # 450020 Small-Block Chevy Cast Iron Engine Block is manufactured to the following specifications: • Block Type: Small-Block Chevy • Block Material: Cast Iron • Cylinder Wall: Siamese • Supplied Bore Size: 4.125" • Supplied Stroke Clearance: 3.750" • Max Recommended Bore: 4.185" • Max Recommended Stroke: 4.00" • Max Recommended C.I.: 440 • Deck Height: 9.025" • Cam Bearing Bore ID: 2.000" • Camshaft Position: Standard SBC • Head Bolt Pattern: Standard SBC • Inside Head Stud Bosses: No • Lifter Bores: Standard SBC • Main Bearing Size: Standard SBC 400 • Main Bearing Bore: 2.8408" • Main Caps: 4 Bolt Splayed Nodular Iron • Oil System: Main Priority • Oil Cooler Holes: N/A • Rear Main Seal: 2-Piece • Hydraulic Roller Provisions: Yes • Stud and Bolt Holes: Through to Water • Tapped Holes: Standard Thread & Pitch • Timing Chain/Gears: Standard SBC • Timing Cover: 8 or 10 Bolt • Fuel Pump Boss: Yes • Starter: Standard Location • Clutch Linkage Boss: Yes


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Application Application Specific
UPC 00085347999491
Availability Note Built to Order
Warranty 12 Months
Emissions Code
Hazardous Materials Warning WARNING: This product can expose you to Lead, which is known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit