Cast Iron Bow Tie Race Engine Block, SBC (283 Main)

Product Discontinued

CHEVROLET PERFORMANCEPART NUMBER: 809-24502650

Cast Iron Bow Tie Race Engine Block, SBC (283 Main)

Name: Cast Iron Bow Tie Race Engine Block, SBC (283 Main)
Brand: CHEVROLET PERFORMANCE
SKU: 809-24502650
Price: 6334.55 USD
Availability: OutOfStock

Currently Unavailable

This product is no longer available. Please call customer service for assistance at 1-800-345-4545.

Short Deck

Small Block Chevy (283 Main)
Short Deck: 8.325''
Tested to 800+ Horsepower
3.980'' Rough Bore (4.190'' Maximum)
Integral oil restrictors
Camshaft raised 0.433' to 4.955'
Deck height can be machined to 8.200'
Shorter-than-production pushrods required
Lifter holes and cylinder head bolt holes are not drilled
Designed for drag, road, and restricted oval track racing
Accepts standard, SB2.2, and splayed valve lifter patterns
Can be machined to accept small block Chevy cylinder heads
Cam bearing bores machined for 2.250' OD roller bearings (1.875' ID)
Cylinder bore wall thickness is 0.250' minimum at 4.190' maximum bore
Oldsmobile Aurora V8 bellhousing bolt pattern (12.25" maximum flywheel diameter)
Machined as 4.400' bore and main center (can be machined to 4.500' bore centers)
Must use big block water pump (for balancers larger than 6', raise water pump with adapter)

Features

Cast iron block
CNC-machined for +/- 0.001'' tolerances
SAE 8620 steel 4-bolt mains (20° splayed caps on the three center mains)
Extra-thick main bearing bulkhead machined at 5°
Priority main oiling system
Siamese bores
Nominal wall thickness of cylinder bores is 0.340''
Enlarged cam bosses allow custom machining for larger bearings
Bearing cap inner bolts spread 0.210'' to accept machining of 400 journal crankshafts
Extra-thick deck surfaces have blind-tapped head bolt holes for superior head gasket sealing
Cylinder decks, front and rear of case, oil pan rail surfaces, and head dowel pins are blueprinted
Technical Notes
Check timing system clearance before engine assembly
Non-standard cam bearings required (Click More Info below)
2-piece rear main crankshafts and pre-1986 oil pans required
Billet wet sump rear main cap can be adapted to dry sump with plugs
Some aftermarket mechanical roller lifters may require clearancing at top of lifter bores
Lifter valley oil scavenging boss (below bellhousing flange) and oil dipstick holes are not drilled

Part TypeEngine Block

Product LineChevrolet Performance SBC Bow Tie Race Engine Blocks

BrandCHEVROLET PERFORMANCE

Package Height16.9

Package Width19.0

Package Length553.212

Weight201.0 PG

Part CategoryPerformance Parts

Overall Width (In)17.02

Cylinder Bore As Shipped3.98 in (101.092 mm)

Freeze Plugs IncludedNo

Main Bolt Style4-bolt

Deck Height8.325

Fuel TypeGas

Main Cap MaterialSteel

Main Bearing Cap Bolt Quantity4

Rear Main Seal Style2-piece

Main Caps IncludedYes

Cylinder Bore Diameter3.98

Main Journal Type283 mains

Engine Block StyleAftermarket

Engine Block MaterialCast iron

Overall Width (Mm)432.3

QuantitySold individually

Raised Cam LocationYes

MaterialCast Iron

Main Bearings IncludedNo

Standard Or Reverse RotationStandard

Block Casting Number24502650C

Cylinder Quantity8

Finished Cylinder BoresNo

Cam Bearings IncludedNo

Main Cap Fasteners IncludedYes

Grade TypePerformance

Vendor Part Number24502650

Package Qty1

Package TypeEA

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