Stop searching through junkyards and swap meets for the coveted "Rat Motor" engine blocks. Edelbrock's Big Block Chevy Cast Iron Engine Blocks are a direct replacement, with some upgrades, compared to GM's original blocks. No special cylinder heads, intake manifold or oil pans required! Edelbrock blocks use all the factory spec engine components and accessories. The basic foundation includes nodular iron main caps with splayed 4-bolt design, main priority oiling, mechanical fuel pump boss, and clutch linkage boss. Edelbrock uses this block to build their very own Big Block Chevy crate engines. Edelbrock Engine Blocks are an ideal base to build horsepower for both street and bracket racing.

Features:

• High quality cast iron
• Actual deck height is .005"-.010" taller for additional machining requirements
• 4-Bolt splayed nodular iron main caps
• Head stud holes are blind and do not go into the water jacket
• Standard cam location
• Standard provisions for mechanical fuel pump utilizing a standard length fuel pump pushrod
• Due to variations in lifter sizes and clearance preferences, engine builders prefer the lifter bores sized on the small end of the specification. Lifter bores may require a light hone in some cases.
• Due to a wide variety of available rotating assembly components, it is important to check clearance of all moving parts, especially crankshaft counterweights and connecting rods require .060" clearance.
• Standard starter mounting pad
• Cast and precision machined in the USA!

Specifications:

• Material: Cast Iron
• Deck Height: 9.800"
• Bore Size: 4.500" (4.600" Max Recommended Bore Size)
• Cam Bearing Bore I.D.: 2.120"
• Cam Position: Standard BB-Chevy
• Hydraulic Roller Cam Provisions: Will Accept Gen V & VI and Most Link Bars
• Head Bolt Pattern: Standard BB-Chevy
• Inside Head Stud Bosses: Yes
• Lifter Bores: Gen V, VI; Will Accept Link Bar
• Main Bearing Size: Standard BB-Chevy
• Main Bearing Bore: 2.9370" - 2.9380"
• Main Caps: Nodular Iron, 4-Bolt Splayed
• Oil System: Main Priority Oiling, Wet or Dry Sump
• Oil Cooler Holes: Integral to Block
• Rear Main Seal: 2-Piece (p/n 350-450000); 1-Piece (p/n 350-450001)
• Stud and Bolt Holes: Blind Tapped
• Tapped Holes: Standard Thread
• Timing Chain / Gears: Standard BB-Chevy Mark IV, Gen V/VI
• Timing Cover: 10-Bolt (p/n 350-450000); 6-Bolt (p/n 350-450001)
• Fuel Pump Boss: Yes
• Starter: Standard Location
• Clutch Linkage Boss: Yes