Edelbrock Engine Blocks For Small and Big-Block Chevy


Engine Blocks For Small and Big-Block Chevy by Edelbrock
 
It just doesn't seem right to spend hard earned dollars and trust the quality of a block made in a foreign country. A true American V8 engine deserves to be started with high quality iron cast in America! Edelbrock engine blocks are cast and machined in the USA... and made to last! These are the same engine blocks we use to build our own crate engines. They are precision machined and accurate to the Edelbrock specifications. Available for small- and big-block applications. Edelbrock engine blocks are the perfect starting point for any Chevy high performance engine and the best base for 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 USA!
Application Bore Size Rear Main Seal Part #
Small-Block Chevy Engine Block 4.000" 1-Piece 450021
Small-Block Chevy Engine Block 4.125" 2-Piece 450020
Big-Block Chevy Engine Block 4.500" 1-Piece 450001
Big-Block Chevy Engine Block 4.500" 2-Piece 450000

ENGINE BLOCK COMPARISON CHART
SMALL-BLOCK BIG-BLOCK
Part Numbers #450021 #450020 #450001 #450000
Block Type Small-Block Chevy Small-Block Chevy Big-Block Chevy Big-Block Chevy
Block Material Cast Iron Cast Iron Cast Iron Cast Iron
Cylinder Wall Wet Siamese Siamese Siamese
Bore Size 4.000" 4.125" 4.500" 4.500"
Max Recommended Bore 4.060" 4.185" 4.600" 4.600"
Deck Height 9.025" 9.025" 9.800" 9.800"
Cam Bearing Bore ID 2.000" 2.000" 2.120" 2.120"
Camshaft Position Standard SBC Standard SBC Standard BBC Standard BBC
Head Bolt Pattern Standard SBC Standard SBC Standard BBC Standard BBC
Inside Head Stud Bosses No No Yes Yes
Lifter Bores Standard SBC Standard SBC Standard BBC Standard BBC
Main Bearing Size Standard SBC 350 Standard SBC 400 Standard BBC Standard BBC
Main Bearing Bore 2.6406" 2.8408" 2.9375" 2.9375"
Main Caps Nodular Iron 4 Bolt Splayed Nodular Iron 4 Bolt Splayed Nodular Iron 4 Bolt Splayed Nodular Iron 4 Bolt Splayed
Oil System Main Priority Main Priority Main Priority Main Priority
Oil Cooler Holes N/A N/A Integral to Block Integral to Block
Rear Main Seal 1-Piece 2-Piece 1-Piece 2-Piece
Hydraulic Roller Provisions Yes Yes Accepts- Gen V, VI Link Bar Accepts- Gen V, VI Link Bar
Stud and Bolt Holes Through to Water Through to Water Blind Tapped Blind Tapped
Tapped Holes Standard Thread & Pitch Standard Thread & Pitch Standard Thread & Pitch Standard Thread & Pitch
Timing Chain/Gears Standard SBC Standard SBC Standard BBC Gen IV, V, VI Standard BBC Gen IV, V, VI
Timing Cover 8 or 10 Bolt 8 or 10 Bolt Accepts- Gen V, VI, 6 Bolt Accepts- Mark IV 10 Bolt
Fuel Pump Boss Yes Yes Yes Yes
Starter Standard Location Standard Location Standard Location Standard Location
Clutch Linkage Boss Yes Yes Yes Yes

Edelbrock Tech Note PRODUCT EMISSIONS GUIDE
The following guide is designed to help you determine which Edelbrock components are legal for use on your vehicle. Learn more about Edelbrock Product Emissions Guide.

    50-State Legal
    For Racing Use ONLY
    For Use on Pre-Pollution Controlled Vehicles (PPCV)
    Stock Replacement Part
    Engine Swaps