Cast Iron 350 Engine Block, 4-Bolt Mains, 383 Clearanced, 1-Piece Rear Main 19432109 GM19432109 Suit Small Block Chev CHEV 350 CAST IRON BLOCK 4 BOL For a great starting point to build your own hot rod 383 engine, these Chevrolet Performance cast iron 4-bolt main engine blocks are just what you need. They feature a one-piece rear main seal, a 4.000 in. finished bore, an oil pan rail machined to accept a maximum crankshaft stroke of 3.800 in., and a lifter valley designed for hydraulic roller and flat tappet camshafts and lifters.

Main Journal Type: Chevy 350

Engine Block Material: Cast iron

Engine Block Style: OEM

Deck Height (in.): 9.025 in.

Cylinder Bore as Shipped: 4.004 in.

Cylinder Bore Diameter: 4.000 in.

Maximum Bore Diameter (in.): 4.030 in.

Engine Block Weight (lbs.): 181 lbs.

Main Bolt Style: 4-bolt

Main Caps Included: Yes

Main Cap Material: Nodular iron

Main Cap Fasteners Included: Yes

Main Bearings Included: No

Rear Main Seal Style: 1-piece

Finished Cylinder Bores: Yes

Raised Cam Location: No

Cam Bearings Included: Yes

Freeze Plugs Included: Yes