13 Degree Chevy Cylinder Head
13-degree-chevy-cylinder-head-213-degree-chevy-cylinder-head-813-degree-chevy-cylinder-head-713-degree-chevy-cylinder-head-613-degree-chevy-cylinder-head-513-degree-chevy-cylinder-head-413-degree-chevy-cylinder-head-3

Small Block Chevy 13 Degree

$3,818.82$7,778.24

CHI small block Chevy 13 degree heads are the ultimate in wedge style Chevy performance.  These fully CNC ported heads are designed for  serious circle track or drag racers who want maximum performance.  The CHI 13 degree head features extra tall intake ports, revised spark plug location, and a highly efficient combustion chamber  significantly increasing horsepower potential  and suit power  applications well over 800HP.

The price listed is for a pair of heads.

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SKU: SBC13275 Categories: ,

Product Description

CHI small block Chevy 13 degree heads are the ultimate in wedge style Chevy performance.  These CNC ported heads are designed for serious circle track or drag racers who want maximum performance. The CHI 13 degree head features extra tall intake ports, revised spark plug location, and a highly efficient combustion chamber  significantly increasing horsepower potential. Suitable for applications well over 800HP.

As standard these heads come with CNC machined combustion chambers and ports, extra thick decks, machined for O’ring intake gaskets and reverse flow water passages.

Options include peripheral CNC machining (lightening), machining for down nozzles, Beryllium copper seats.

You have the option of bare heads or complete assemblies ready to bolt on. All CHI heads are fitted with hardened or bronze alloy valve seats and CHE Bronze Alloy valve guides making these heads suitable for the toughest environment.

 

13 Degree Flow Chart

Head ModelPart No.AssembledChamberValve Sizes
Intake
Valve Sizes ExhaustExhaust PatternIntake ManifoldApplication
13 DegreeSBC13275B-55Bare55cc2.200 X 6.0901.600 X 6.090SpreadSpecial Order
SBC13275B-60Bare60cc2.200 X 6.0901.600 X 6.090SpreadSpecial Order
SBC13275B-55-1Bare55cc2.200 X 6.0901.600 X 6.090SpreadSpecial Order
SBC13275B-60-1Bare60cc2.200 X 6.0901.600 X 6.090SpreadSpecial Order
SBC13275C5-55Competition55cc2.200 X 6.0901.600 X 6.090SpreadSpecial OrderRace Solid Roller
SBC13275C5-60Competition60cc2.200 X 6.0901.600 X 6.090SpreadSpecial OrderRace Solid Roller
SBC13275C6-55-1Competition55cc2.200 X 6.0901.600 X 6.090SpreadSpecial Order
SBC13275C6-60-1Competition60cc2.200 X 6.0901.600 X 6.090SpreadSpecial Order
SBC13CNC-RawBareas castN/AN/ASpreadSemi Finished suit CNC porting

Additional Information

Assembly

Bare, C5 – Competition Assembly, C6 – Competition Assembly

Chamber Volume

55cc CNC Ported, 60cc CNC Ported

DelWest Valve Seats?

No, Yes