SEMI-FINISHED 18° ALUMINUM RACING CYLINDER HEAD - 24502580
Part # 24502580
- Fully machined, semi-finished, no seats or guides
- Made of 355-T7 aluminum
- Recommended for use with 4.000" to 4.155" cylinder bores
- Must be custom ported
| Item# | Description | Qty. | Your Price | |
|---|---|---|---|---|
| 24502580 |
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Semi-Finished 18" Cylinder Head
P/N 24502580
- Fully machined, semi-finished, no seats or guides - Non-CNC ports and combustion chamber are "as-cast" - 60cc "as-cast" combustion chambers - Designed for up to 2.200"/1.625" valves - 215cc "as-cast" intake ports - .080" extra material on deck face, and .055" on intake faceAluminum Racing Head Technical Notes:
- Made of 355-T7 aluminum
- Extra-thick decks for angle milling or heavy flat milling
- Extra port material for professional porting
- Recommended for use with 4.000" to 4.155" cylinder bores
- Revised location angled spark plugs (14mm, 5/8" hex, 3/4" reach, gasketed plugs)
- Raised and revised location intake and exhaust ports for superior airflow above 0.600" valve lift
- Modified valve angles (not production 23 °)
- Longer-than-stock valves required
- Designed for aftermarket shaft-mount rocker systems
- Perimeter-bolt-pattern-type valve covers required
- Specific 18 °/15 ° intake manifold bolt patterns
- Recommended intake manifolds: P/N 24502481 or 24502653 (with valley plate P/N 24502654)
- Intake manifold gasket P/N 10185007
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