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CHEVROLET PERFORMANCEPART NUMBER: 809-24502501
350 Main, 283 Bore Cast Iron Bowtie Race Block Cast iron competition block right out of the box
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This product is no longer available. Please call customer service for assistance at 1-800-345-4545.
- 350 Main, 283 Bore Cast Iron Bowtie Race Block
- Cast iron competition block right out of the box
- 4-bolt SAE 8620 steel mains, 20 degree splayed caps on center 3 mains
- 2.00"O.D. cam bearings (1.867" I.D.) P/N 809-12370843 required at all five locations
- 3.875" finished bore (non-siamese bores)
- 4.030" max bore
- 9.025" deck height
- Shipped with 2-piece rear main seal adapter installed
- Oil galleries for dry sump system are oversized and tapped for pipe plugs
- Supplied with sonic data sheet
- Tested to over 650 horsepower
- Proven in NASCAR and NHRA, Chevrolet Performance Bow Tie Race Blocks produce big power. These cast iron engine blocks use premium materials throughout and have full race-prep CNC-machining with tighter tolerances than standard Bow Tie Blocks.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 blueprintedTechnical 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
Product LineChevrolet Performance SBC Bow Tie Race Engine Blocks
BrandCHEVROLET PERFORMANCE
Package Width210.0
Weight210.0 PG
Part CategoryPerformance Parts
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
