

Cylinder Head Specifics:
Intake Valve Diameter: 2.520
Exhaust Valve Diameter: 1.800
Combustion Chamber:
Volume: 68 to 78 c.c. Nitrous
Seats: Steel (or) Copper Beryllium
Minimum Bore: 4.400
Intake Manifold: MBE Ported Edelbrock (or) Sheet Metal
Rockers: Jesel
Complete Assemblies Available
Details
The 11 Degree Big Chief is MBE’s most popular head for big block NHRA Sportsman racing. And that’s because this head design is a proven winner on the track.
To develop this cylinder head, MBE pulled together lessons learned from its winning NHRA and IHRA Pro Stock programs along with its 18 record-holding Comp Eliminator customers to develop ports that are perfectly sized to both maximize airflow and port velocity. And since there are so many different applications and engine packages that will work with these heads, MBE refused to take the easy way out and compromise with a “one size fits all” port. Instead, it has created two different port packages for no-compromise power depending on your needs.
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is the leading induction specialists in the country, with cylinder heads and intake manifolds used in championship winning programs from NASCAR Nextel Cup, to NHRA Pro Stock, to Sprint Cars to Dirt Late Models and more. MBE is the only CNC porting company to guarantee cfm flow numbers for every cylinder head it produces—and those numbers are often the highest you will see anywhere. MBE maintains an aggressive R&D program and constantly updates its cylinder head and intake profiles to stay ahead of the competition.
In racing, there is no “one size fits all” solution, so MBE custom fits port and chamber designs specifically to each racer’s application. This even includes custom port work on intake manifolds to make sure the entire induction path is optimized for the engine. It’s all a part of MBE’s commitment to you: Power through precision.
For more information, please contact MBE Cylinder Heads and Manifolds to find out how they can help you make more power and win races.
Retro Fit & Ported Manifolds| - | One size does not fit all |
| - | Manifolds designed for your applications |
| - | Professional porting like no other |
| - | Deck height is never an issue |
| - | Plenum volumes and designs for your CID and RPM |
| - | Runner lengths and designs for your CID and RPM |
| - | Has a stock appearance - All modifications are hidden |
| - | 4150 or 4500 carb |
custom ported manifolds...