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Big M Pro Engine Block
- Big Block Chevy Big M Pro Engine Block
- 4.600'' Bore
- 10.600'' Deck Height
- The Dart Big M Pro Cast Iron Big Block is a no compromise design that solves the problems that have plagued big-block racers for years. Working with top builders and Dart's own championship-winning Pro Stock engine department, they have designed a user-friendly block with the features you need today. For example, Dart redesigned the lubrication system to create a true ''priority main'' system that oils all of the main bearings before the lifters for extra reliability. Next Big Blocks are prone to head gasket failure in long spans between head bolts. Dart has added two head stud bosses on both sides of the lifter valley to take the place of the ''missing'' head bolts.
- Raised Camshaft Location +.600''
- Oil Pan rails spread +.750''
- Accepts Stroke Combos up to 5.500''
- Priority Main Oiling
- Billet Steel Main Caps
- Lifter Bores .904''
- 2-Piece Rear Main Seal
- Includes Coated Cam Bearings, Freeze Plugs & Dowels
With bore sizes up to 4.600'' and deck heights from 9.600'' to 11.100''; the Big M Pro gives you the versatility of build a wide variey of engine combinations!
Features:Part TypeEngine Block
Product LineDart Big Block Chevy Big M Pro Engine Block
BrandDART
Package Width300.0
Weight300.0 PG
Part CategoryPerformance Parts
Main Journal TypeOEM
Engine Block StyleAftermarket
Engine Block MaterialCast iron
Cylinder Bore As Shipped4.49 in (114.046 mm)
Engine Block Weight (Lbs.)313
QuantitySold individually
Raised Cam LocationYes
Freeze Plugs IncludedYes
Main Bolt Style4-bolt
Deck Height10.6 in (269.24 mm)
Main Bearings IncludedNo
Main Cap MaterialSteel
Rear Main Seal Style2-piece
Main Caps IncludedYes
Finished Cylinder BoresNo
Cylinder Bore Diameter4.5 in (114.3 mm)
Cam Bearings IncludedYes
Main Cap Fasteners IncludedYes
Vendor Part Number31283665
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
