Dart Small Block Chevy Aluminum Race Blocks Engine Block - Aluminum - 4-Bolt Mains - 3.990 in. Diameter Bore - 2-Piece Rear Main Seal - Chevy - 350

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Dart Machinery

353 Oliver Street
Troy, MI MI

Website: www.dartheads.com
Phone: 248-362-1188

Dart blocks and cylinder heads provide an exceptional value at an affordable price. Precision machining and quality control measures mean you get optimum out of the box performance. A \"bargain\" component can wind up costing far more after the machining which will be required to make it usable. Our cylinder heads offer considerable added value as well. Superior casting technology, premium materials, optimized port and chamber design, premium valve guides, hardened valve seats, rolled valve angles and CNC porting are among the available features. Fully assembled or bare heads can be ordered with combustion chambers matched to your bore size.

Description for Dart Machinery part# 31112132

Ultimate starting point for any project. Dart has applied their years of experience in manufacturing aluminum cylinder heads to create these small block Chevy aluminum race blocks. Working with the leading engine builders, they incorporated features that make the Dart block the best choice for an all-out competition engine. These Dart aluminum small blocks are light, strong, and affordable. With displacements of up to 455 cu. in. (4.190 in. bore x 4.125 in. stroke), these Dart aluminum blocks are ideal for sprint cars, modifieds, late-model stock cars, dragsters, and unlimited competition classes.Features include:* Cast 355-T6 aerospace alloy for superior strength and integrity* Siamesed cylinders where standard 4.00 in. or 4.125 in. bores can be safely bored to 4.185 in.* Ductile iron sleeves and extra-thick walls prevent cracking and produce excellent ring seals* Scalloped water jackets, which increase coolant flow around cylinder barrels to prevent detonations, extend engine life, and produce consistent cylinder temperatures* Oil pan rails are spread .400 in. per side (.800 in. total) and bolt holes are relocated to increase crankshaft/rod clearances* Main bearing bores available for 350 (2.45 in.) and 400 (2.65 in.) bearings maximize crankshaft strength and minimize friction* Steel 4-bolt main bearing caps increase bottom-end strength and minimize bearing bore distortion* Rear main cap with mount for internal oil pump* Two-piece rear main seal fits standard racing crankshafts without adapters* Dual starter mounts allow starters to be mounted on either side of the block for chassis and oil pan clearance* Side and front engine mounts accommodate any type of chassis mounting* Fuel pump boss mounts a standard small-block mechanical fuel pump* Big-block cam bearings increase camshaft strength and reduce twisting with cam-driven pumps* Raised camshaft (4.912 in. camshaft-to-crankshaft centerlines) provides more clearances for stroker cranks and eliminates the need