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CHEVROLET PERFORMANCEPART NUMBER: 809-25534421
Small Port Cast Iron Vortec Cylinder Head Assembled
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This product is no longer available. Please call customer service for assistance at 1-800-345-4545.
Bow Tie Small Port Vortec Cylinder HeadsSmall Block Chevy Sold Individually
- Small Port Cast Iron Vortec Cylinder Head
- Assembled
Cylinder Head Components - Intake Valves 809-12363757
- Exhaust Valves 809-12363758
- Valve Springs 809-12551483
- 3/8" Rocker Studs (Chevrolet Performance #12552126)
- Valve Spring Retainers (Chevrolet Performance #10212808)
- Valve Stem Seals 809-10212810
- Valve Locks 809-24503856Notes
- Use early model Intake Manifold 809-10185063 or, for best results, Vortec Intake Manifold 809-12496820, 809-12366573, 809-12496822, or 809-12496821 (Vortec Intake Manifold 3-step torque specs: 2 ft/lbs, 9 ft/lbs, 11 ft/lbs)
- Use Intake Manifold Gaskets 809-12497760 (Dual bolt pattern)
- Use Exhaust Gaskets 375-1470 (Trimming may be necessary)
- Small Block Chevy Bow Tie Small Port Cast Iron Vortec Cylinder Heads are Chevrolet Performance's most powerful cast iron cylinder head designed for street or race applications in the 400-450 horsepower range. As upgraded production heads, they have a thicker deck surface, small runners, bigger valves, and combustion chambers with exceptional low-lift flow numbers. These cylinder heads provide Chevy's Fast Burn performance in an affordable cast iron option.Features
- Cast iron
- No heat risers
- Intake Ports: 185cc
- Exhaust Ports: 65cc
- Deck Thickness: .450''
- Popular in short track racing
- Combustion Chambers: 66cc
- Hardened exhaust valve seats
- Machined for 2.00''/1.55'' valves
- Drilled & tapped for 7/16''-14 screw-in studs
- .530'' maximum valve lift without modification
- Cast Logos: Vortec (intake port roof), GM (intake port floor), Bow Tie (exhaust side)
- Dual bolt patterns for: perimeter and centerbolt valve covers & early model and Vortec intake manifolds
Product LineChevrolet Performance Small Block Chevy Small Port Vortec Cylinder Heads
BrandCHEVROLET PERFORMANCE
Package Height6.7
Package Width9.7
Package Length21.9
Weight52.65 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
