| Intake Port Volume: | 336cc |
| Combustion Chamber: | 123cc |
| Intake Valve Size: | 2.25" |
| Exhaust Valve Size: | 1.88" |
| Valve Stem Diameter: | 3/8" |
| Rocker Studs: | 7/16" |
| Max Spring Diameter: | 1.625" |
| Exhaust Crossover: | No |
| Plug: | Standard |
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- Hardened exhaust seats
- Bronze valve guides
- Aircraft quality high grade aluminum alloy
- Multi-angle seat design for improved flow at low lifts
- Advanced port design for improved flow at all lifts
- Threaded accessory holes in ends of heads
- Thick deck to resist warping and allow for additional milling if desired
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Autonets 
