CFE 18 Degree
Spreadport BBC
Standard 18 degree Spreadport programs are available in both rectangular and oval port configurations depending on engine requirements. CFE 18 degree Spreadport programs are custom engineered for both engine application and manifold requirements.
The 18 degree Spreadport head is recommended specifically for nitrous oxide applications as it promotes efficient atomization of the air-fuel mixture and thus broadening the tuning window of the engine by making it less prone to detonation. Also the larger combustion chamber typical of the 18 degree Spreadport head makes it desirable for applications that require less compression ratio such as turbocharged and blown engines.
Popular Applications Include: Successfully used in Top Sportsman, Top Dragster, heads-up street car racing, bracket racing, off-shore marine, blown alcohol, drag boats, tractor pulling, mud racing and turbo-charged applications.
Cylinder Head SpecificsRequest More Info | |
| Intake Valve Diameter: | As large as 2.400" |
| Exhaust Valve Diameter: | As large as 1.900" |
| Chamber Volume: | 95cc @ 4.500 Bore, 97cc @ 4.600 Bore |
| Seats: | Available with ductile iron or alloy seats. |
| Guides: | 11/32" valve guides are standard, Alloy guides are standard, steel guides are available upon request and are recommended for boosted applications. |
| Exhaust Flange: | Accepts a standard Big Block Chevy header. |
| Cooling Provisions: | The CFE 18 degree Spread-Port head has cooling provisions on the intake flange. |
Cylinder Head RequirementsRequest More Info | |
| Intake Manifold: | Cast single dominator or tunnel ram manifolds are available for 9.800 or 10.200 deck heights. |
| Exhaust Lifters: | Qty 8 @ on-center |
| Valve Cover: | Requires a standard Big Chief valve cover and valve cover gasket. |
| Shaft Rocker System (required) | |
| Jesel: | KPS-23097 |
| T&D: | 3036 |
| Head Stud Part Number: | 235-4312 |
| Spark Plug: | 3/4" reach gasketed spark plug |
| Assembly Components: | Call for details |
Additional Press: | |