All American Race Series
13° SBC Racing Heads
Series P/N: 219
- 13 Degree Modified Valve Angle
- 285cc Intake Port
- 42cc Heart Shaped Combustion Chamber
- Up to 2.200 Intake & 1.600 Exhaust Valves
- Accepts up to 1.675 O.D. Springs
- Made in the U.S.A.
The New All American RS 13° cylinder head features the most reliable casting in the industry. Made from Pro-Filer's unique A356 alloy and featuring an unmatched port and chamber design, this head has what it takes to get you to the front of the pack.
Available with an as cast 285cc intake port or fully CNC ported to 300cc. Designed with a solid rocker bar, an efficient combustion chamber and well over 400cfm it is easy to see why this is an "All American" choice for you SBC racing application.
Details
Series P/N: 219 SBC Head Specifications
| Material: | Aerospace Specification, A356 Aluminum Alloy (Primary Virgin Ingot) |
| Valve Angle: | 13 Degree |
| Intake Port Volume & Shape: | 285cc, PRECISION As-Cast |
| Combustion Chamber: | Heart-Shaped, As-Cast 42cc |
| Spring Pocket: | Maximum of 1.675 (no deeper) |
| Valve Diameter: | Intake 2.180"-2.200", Exhaust 1.600" |
| Deck Thickness: | 1/2" |
| Spark Plugs: | .750 Reach, Gasketed (NGK R5671A-7 or colder) |
| Valve Seats: | Steel (standard) or Copper Alloy |
| Valve Guides: | Manganese Bronze to assist in extending valve life |
| Rocker System: | Shaft |
| Milling: | Flat - .0050" per cc |
| Engine Size: | 357cid & larger |
| Valve Covers: | Std SBC rail bolt |
| Bore Spacing: | Standard |
| Application: | High Performance Drag Racing / Circle Track |
Air Flow Detail #219 SBC All American Head - 285cc Runner
Pro Filer Small Block Chevy All American Heads with 285cc Intake Runner, 2.200" Intake Valve and 1.600" exhaust valve. Flow data based on Cylinder #1 intake and exhaust port. Flow measured at 28" of depression.
Air Flow Detail #219 285cc Runner
| Lift | Intake CFM | Exh CFM | % Exh/Int |
|---|---|---|---|
| 0.200 | 157 | 107 | 68% |
| 0.300 | 233 | 158 | 68% |
| 0.400 | 300 | 206 | 69% |
| 0.500 | 344 | 233 | 68% |
| 0.600 | 370 | 251 | 68% |
| 0.700 | 377 | 260 | 69% |
| 0.800 | 378 | 268 | 71% |
Air Flow Chart #219 - 285cc Runner
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