The Dart Big M big block Chevy cast iron bare blocks no-compromise design solves the problems that have plagued big blocks for the years. The Dart Big M features extra-thick cylinder walls, and are available with a choice of different deck heights and cylinder bores, so there's sure to be a Big M block for you to build a better big block to suit your needs.
Part Type: Engines, Bare Blocks
Product Line: Dart Big M Big Block Chevy Cast Iron Bare Blocks
Main Journal Type: OEM
Engine Block Style: Aftermarket/OEM tall deck
Deck Height (in): 10.200 in.
Cylinder Bore as Shipped: 4.590 in.
Cylinder Bore Diameter: 4.600 in.
Engine Block Material: Cast iron
Engine Block Weight (lbs): 250 lbs.
Main Bolt Style: 4-bolt
Main Caps Included: Yes
Main Cap Material: Steel
Main Cap Fasteners Included: Yes
Main Bearings Included: No
Rear Main Seal Style: 2-piece
Finished Cylinder Bores: No
Raised Cam Location: No
Cam Bearings Included: Yes
Freeze Plugs Included: Yes
Quantity: Sold individually.
Notes: Block bores are .10 undersized to allow for piston set up.
Call 316-775-7771 to purchase.
WARNING: This product contains a chemical known to the State of California to cause cancer and reproductive harm. See https://www.p65warnings.ca.gov/ for details.