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CNC Machined Cylinder
Heads
We've taken something great and made
it even better! Now our heads are available fully CNC Machined on both the
intake and exhaust ports.
These are fully machined by Jeff
Kobylski at Modern Cylinder Head in Michigan.
Heads are 100% CNC ported on their
Fadal 5 axis CNC machine.
Modern Cylinder Head sizes and checks
the bronze guides for correct clearance, then performs their precision multi
angle valve job on their Serdi equipment. All valves are then lapped to
verify a good seal.
Heads are then surfaced on Modern's
Peterson RP 900MVA Surfacer.
Valve spring installed heights are checked and shimmed if necessary.
Finally all parts are cleaned and assembled.
All work is done 100% in the USA, at
Modern Cylinder Head's shop in Michigan.
Part No: 200-1080 - Stealth Aluminum Cylinder Head - CNC
PORTED - ASSEMBLED SINGLE HEAD (order quantity 2 for a pair)
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Flow Chart: CNC Stealth Cylinder
Heads
Flowed at 28" on a 4.380" bore with a Superflow 600 bench.
Exhaust flowed with 2" tube. |
| Valve Lift: |
Intake CFM: |
Exhaust CFM: |
| .100" |
75.0 |
72.9 |
| .200" |
156.7 |
124.8 |
| .300" |
219.8 |
166.4 |
| .400" |
266.2 |
198.1 |
| .500" |
298.8 |
219.3 |
| .550" |
306.2 |
228.6 |
| .600" |
314.9 |
233.3 |
| .650" |
320.7 |
238.2 |
| .700" |
320.7 |
243.8 |
| .750" |
321.6 |
248.2 |
All specs on the head castings and
valvetrain hardware can be found on the specs page for our standard (non CNC)
Stealth cylinder heads.
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