Dart Iron Eagle Engine Blocks Engine Block - Cast Iron - 4-Bolt Mains - 4.125 in. Diameter Bore - 2-Piece Rear Main Seal - Chevy - 400

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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# 31121211

* Steel main bearing caps * Relocated oil pan rails are spread .400 in. per side (.800 in. wider than stock) to increase crank/rod clearance and reduce windage losses * Oil pan bolt holes are relocated in line with main caps to eliminate interference with rotating assembly * Rear main cap has provisions for a wet sump oil pump * Dual starter mounts allow starter to be mounted on either side of block * Side and front engine mounts * Fuel pump boss mounts a standard small block mechanical fuel pump (requires .200 in. longer big block pushrod) * Two piece rear main seal fits standard racing crankshafts without adapters * Raised camshaft (4.912 in. camshaft–to–crankshaft centerlines) provides more connecting rod clearance with long stroke cranks * Optional big block and roller camshaft bearings allow the use of cams with larger base circle diameter to improve strength and reliability * Priority main oiling system directs oil to main bearings first * Free standing head bolt bosses minimize bore distortion to improve cylinder sealing * Blind tapped head bolt holes prevent water leaks * Sealed lifter valley has provisions for rear oil scavenge * Minimum .625 in. deck thickness ensures reliable head gasket seal * Extra thick siamesed cylinders provide a minimum .275 in. wall thickness at 4.125 in. bore diameterDart components are not legal for sale or use on pollution-controlled motor vehicles.This Iron Eagle block is designed to meet the needs of hot rodders stock car racers sprint car teams drag racers and road racers who want a real racing block at an affordable price. This block has a standard 9.025 in. deck a 4.125 in. bore and 350 main bearings. This block also features a raised camshaft and spread oil pan rails to provide extra clearance for stroker cranks. This Iron Eagle block is a great starting point for your race engine.