Chev 454 Gen 6 ,4 Bolt GM Performance 454 Bare Engine Block # 19170538 12561353

Engine Block, Cast Iron, 4-Bolt Mains, 4.250 in. Diameter Bore, 1-Piece Rear Main Seal, Chevy, Big Block, Each

Main Journal Type:

Chevy 454

Engine Block Material:

Cast iron

Engine Block Style:

OEM

Engine Block Deck Height:

Standard deck

Deck Height (in.):

9.800 in.

Cylinder Bore as Shipped:

4.240 in.

Cylinder Bore Diameter:

4.250 in.

Maximum Bore Diameter (in.):

4.310

Main Bolt Style:

4-bolt

Main Caps Included:

Yes

Main Cap Material:

Cast 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

Quantity:

Sold individually.

Chevrolet Performance 454 C.I.D. Bare Engine Blocks

Direct from Chevrolet Performance are these 454 c.i.d. bare engine blocks. These are special Gen. VI bare iron blocks with 4.25 in. cylinder bores with 4-bolt main bearing caps. They have machined fuel pump pads, a one-piece rear main seal design, and standard 454 deck height. The maximum cylinder bore on these blocks is 4.25 in. plus .060 in. O.S., and will require the "Gen V/GenVI" design one-piece oil pan.