The CFE 14 degree Spread-Port head is perhaps the most diverse of any of our Pro Stock style cylinder heads. Available with several different porting programs of both oval and rectangular port design and various valve diameters to accommodate the engine?s bore size. Engine displacements ranging from 430 to 706 c.i.d. have been built using this head. Even with such diversity in combinations all of the CFE 14 degree Spread-Port heads use most of the same assembly components except for pistons due to valve diameter options.
Oval Port Programs designed for smaller displacement engines (under 600 c.i.d.). Applications varying from super-category throttle stop racing to moderate nitrous use.
Square Port Programs designed for large displacement engines (over 600 c.i.d.). CFE fabricated manifold is recommended.
Cylinder Head SpecificsRequest More Info
|Intake Valve Diameter:||As large as 2.480"|
|Exhaust Valve Diameter:||As large as 1.880"|
|Chamber Volume:||82cc @ 4.600 bore|
|Seats:||Available with ductile iron or alloy seats.|
|Guides:||11/32" valve guides are standard, 5/16" guides are available upon request. Alloy guides are standard.|
|Exhaust Flange:||Uses a standard Big Block Chevy header/exhaust flange.|
|Cooling Provisions:||The CFE 14 degree Spreadport head has cooling provisions on the intake flange.|
Cylinder Head RequirementsRequest More Info
|Minimum Bore:||4.500" (custom versions are available for bore sizes less than 4.500?)|
|Intake Manifold:||Cast 1x4500 manifolds available for 9.800 and 10.200 deck heights. CFE fabricated manifolds available for various applications.|
|Exhaust Lifters:||Qty 8 @ on-center|
|Valve Cover:||Uses a standard Big Chief valve cover and valve cover gasket.|
|Shaft Rocker System (required)|
|Head Stud Part Number:||235-4312|
|Spark Plug:||3/4" reach gasketed spark plug|
|Assembly Components:||Call for details|