DART Pro 1 SBC Cyl Head; Straight Plug; 1.437 Dual Springs CHEVROLET 265 SM BLOCK


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Part #: 11121112P
Notes: Pro 1 SBC Cyl Head
Straight Plug
1.437 Dual Springs
MSRP: $869.69
Your Price: $785.88
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Specs

Comb Chamber 64cc
Intake Runners 180cc
Valves 2.02 Int / 1.60 Exh

All Fitments

CHEVROLET
Year Model SubModel Cylinders Liter Aspiration Eng Desg. Fuel Notes
1975 - 1976 262 SMALL BLOCK ALL ALL ALL ALL ALL ALL
1955 - 1957 265 SMALL BLOCK ALL ALL ALL ALL ALL ALL
1980 - 1982 267 SMALL BLOCK BASE V8 4.4 N ALL GAS
1957 - 1967 283 SMALL BLOCK ALL ALL ALL ALL ALL ALL
1967 - 1969 302 SMALL BLOCK ALL ALL ALL ALL ALL ALL
1977 - 2002 305 SMALL BLOCK ALL ALL ALL ALL ALL ALL
1967 - 1969 307 SMALL BLOCK ALL ALL ALL ALL ALL ALL
1962 - 1969 327 SMALL BLOCK ALL ALL ALL ALL ALL ALL
1967 - 2005 350 SMALL BLOCK ALL ALL ALL ALL ALL ALL
1967 - 1979 360 SMALL BLOCK ALL ALL ALL ALL ALL ALL
1980 - 2005 360 SMALL BLOCK ALL ALL ALL ALL ALL ALL
1970 - 1980 400 SMALL BLOCK ALL ALL ALL ALL ALL ALL

Product Description

The redesigned chamber features improved fuel distribution , spark plugs are located high and as close to the center of the chamber as possible and five angle intake seats shear the liquid fuel and air as it enters the chamber. The intake face, exhaust face and exhaust ports have been redesigned, valve guide bosses are profiled and casting walls are cleaner and more consistent, resulting in greater control over flow, heat and combustion. Multiple intake sizes are available to suit engines from mild street to big-inch full competition.

Features:

  • Premium alloy: Dart aluminum heads are cast from virgin 355-T61 aerospace alloy for superior strength and integrity.
  • Bolt on compatibility: Standard valve angle and spacing are retained to allow use of off the shelf pistons and valve train components.
  • Heart shaped chambers improve combustion efficiency and fit most standard pistons.
  • Multi-angle intake seats and radiused exhaust seats dramatically increase airflow.
  • Hardened exhaust seats are compatible with unleaded gasoline.
  • Manganese bronze intake valve guides and phosphorous bronze exhaust valve guides extend cylinder head life.
  • Choice of angled or straight spark plugs to clear manifolds and headers.
  • Spark plug holes are machined for gasketed 3/4” reach plugs.
  • 5-axis CNC bowl blended for optimal flow characteristics.
  • Dual exhaust bolt pattern spot is provided for easy header fitment.
  • All cylinder heads sold individually.

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