CFE 18 Degree N2O Specials
Spreadport BBC
This is our original big-bore-spaced head developed specifically for Pro-Mod drag racing. Over the past decade there have been several versions tested by the best and most noted nitrous engine builders in the country. The most current version recommended specifically for nitrous oxide applications features an 18 degree primary valve angle and a revised guide location relative to the bore. This adds a great deal of strength to the piston in the area of the valve relief relative to the top ring land (a weak spot with all nitrous engines). As a result higher power levels can be achieved.
Popular Applications Include: Top Sportsman, Top Dragster, heads-up drag racing, drag boats, off-shore marine, and mud racing.
Cylinder Head SpecificsRequest More Info | |
| Head Bolt Pattern: | Brodix-Eicke or CFE-Fulton |
| Intake Valve Diameter: | 2.400" - 4.600" bore, 2.480" - 4.675" Bore |
| Exhaust Valve Diameter: | 1.900" |
| Chamber Volume: | 97cc |
| Seats: | Alloy seats are standard. |
| Guides: | 11/32" steel guides are standard on the exhaust, 11/32" alloy guides are standard on the intake. |
| Exhaust Flange: | CFE 5" flanges are available from various aftermarket sources. The pattern is a standard big block Chevy pattern on 5" centers. |
| Cooling Provisions: | The CFE 18 degree head has cooling provisions on the intake flange. Coolant holes for a -16AN fitting can be added to the end of the casting upon request. |
Cylinder Head RequirementsRequest More Info | |
| Minimum Bore: | 4.600" |
| Intake Manifold: | CFE die-formed fabricated manifold or CFE billet runner manifold required. |
| 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: | |