Air Strike 12° Small Block Chevy Racing Cylinder Heads
Series P/N: 217
- 12 Degree Modified Valve Angle
- 370cc Oval Intake Port
- 44cc Heart Shaped Combustion Chamber
- Up to 2.260 Intake & 1.600 Exhaust Valves
- Accepts up to 1.650 O.D. Springs
- Made in the U.S.A.
The Air Strike Cylinder Head is the latest technology for your SBC. The Air Strike 12° Small Block Chevy head is for the standard bore spacing and features symmetrical ports, splayed valves and a stable rocker bar platform.
Made from the same Aerospace A356 Alloy and casting technology that the U.S. military relies on, the Air Strike Cylinder Head is on point.
Also available as a core for Professional Head Porters, see our 217X Air Strike Head.
Details
Series P/N: 217 SBC Head Specifications
| Material: | Aerospace Specification, A356 Aluminum Alloy (Primary Virgin Ingot) |
| Valve Angle: | 12° valve angle |
| Intake Port Volume & Shape: | 370cc, PRECISION As-Cast, Oval Shaped |
| Combustion Chamber: | Heart-Shaped, As-Cast 44cc |
| Spring Pocket: | Maximum of 1.650 (no deeper) Exhaust Valve: 1.600" |
| Intake Valve: | 2.200"-2.250" |
| Exhaust Valve: | 1.600" |
| Deck Thickness: | 1/2" |
| Spark Plugs: | Uses Gasketed 3/4" Reach Plugs such as NGK R5671-7 Series |
| Valve Seats: | Copper Alloy |
| Valve Guides: | Manganese Bronze to assist in extending valve life |
| Milling: | .0050 per cc flat milling |
| Engine Size: | 400 cid & larger |
| Application: | High Performance Drag Racing |
| Note: | This is a racing cylinder head |
Air Flow Detail #217 SBC Air Strike - 370cc Runner
Pro Filer Small Block Chevy Air Strike Heads with 370cc Intake Runner, 2.250" Intake Valve and 1.60" exhaust valve. Flow data based on Cylinder #1 intake and exhaust port. Flow measured at 28" of depression.
Air Flow Detail #217 - 370cc Runner
| Lift | Intake CFM | Exh CFM | % Exh/Int |
|---|---|---|---|
| 0.200 | 146 | 85 | 58% |
| 0.300 | 217 | 156 | 72% |
| 0.400 | 300 | 205 | 68% |
| 0.500 | 364 | 245 | 67% |
| 0.600 | 409 | 260 | 64% |
| 0.700 | 427 | 271 | 63% |
| 0.800 | 441 | 280 | 63% |
| 0.900 | 452 | 282 | 62% |
| 1.000 | 462 | 286 | 62% |
Air Flow Chart #217 - 370cc Runner
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