AEROFLOW Performance Small Block Chevy (SBC) Bare Engine Block – 4.125″ Bore

Description

AEROFLOW Performance Small Block Chevy (SBC) Bare Engine Block – 4.125″ Bore

The Ultimate Foundation for Your Next Engine Build

Are you looking for the perfect starting point for your next street performance build? The Aeroflow Performance Small Block Chev (SBC) Bare Engine Block (Part Number: AF96-1002) is the ultimate foundation for engine builders who demand precision, unmatched quality, and exceptional value.

Forget spending countless hours and money machining a worn-out, decades-old production block. This brand-new, heavy-duty cast iron engine block comes semi-finished, requiring only minimal machining to perfectly match your chosen internal components. Cast from premium high-strength Class 32B iron, this block is built to withstand serious horsepower, torque, and heavy-duty use.

Designed specifically with the performance enthusiast in mind, the Aeroflow SBC block features Siamese cylinder bores and splayed billet steel four-bolt main caps. It utilises a priority main oiling system, directly feeding oil to the main bearings first to ensure optimal and reliable lubrication under heavy loads. Furthermore, the extra-thick standard deck height provides a highly reliable head gasket seal while allowing you to easily use standard, off-the-shelf components, such as camshafts, timing chains, oil pumps, and filters.

Build with absolute confidence and lay a rock-solid foundation for your next high-performance engine with Aeroflow.

Key Features

• Premium Construction: Cast from top-tier, high-strength Class 32B iron for maximum durability and block rigidity.

• Siamese Cylinder Bores: 4.125″ bore diameter, offering robust cylinder walls (0.275″ min thickness at a 4.185″ bore).

• Billet Steel Main Caps: Four-bolt configuration, with the three centre caps splayed for enhanced bottom-end strength.

• Priority Main Oiling System: Directs oil straight to the main bearings first, ensuring reliable lubrication at high RPMs (dry sump compatible).

• Extra-Thick Deck: 9.025″ standard deck height with a minimum thickness of 0.675″ to ensure a superior head gasket seal.

• Standard Component Compatibility: Cleverly designed to accept standard off-the-shelf SBC components (camshafts, oil pans, timing covers, etc.).

Technical Specifications

• Part Number: AF96-1002

• Cylinder Bore Diameter: 4.125″

• Max Bore & Stroke: 4.185″ x 4.000″

• Deck Height: 9.025″

• Main Bearing Size: 2.450″ (350 Mains)

• Main Caps: Billet Steel, 4-Bolt (3 centre caps splayed)

• Rear Main Seal: Standard 350 2-Piece

• Cam Location: Standard

• Weight: 92 kg (205 lbs)

Please Note: This block is semi-finished and must be professionally finish-machined prior to assembly to ensure proper clearances for your specific pistons and components.