RPM Air-Gap 2-R (1500-6500 RPM)
Designed for street 396-502 c.i.d. Chevrolet V8s with high-performance rectangular-port heads, the RPM Air-Gap incorporates our race-winning technology. The open air space separates the runners from the hot engine oil, and as a result, the air/fuel mixture stays cooler for a denser charge and more power. Includes rear water outlets, two distributor clamp locations and nitrous bosses. Accepts all late model alternator and A/C brackets for the street. For square-bore carbs only. No provision for exhaust heated chokes and no exhaust crossover. Available with satin, polished or EnduraShine finish.
Carburetor Recommendations: Edelbrock AVS2 Series or Performer Series carb, 750-800 cfm (see pages 9-12), use bracket #8031 for 1972-78.
Installation Notes: Recommended intake gasket: Edelbrock #7202. Manifold height: A-4.45", B-6.0"; Carb pad height: 5.22". Port exit dimensions: 1.56" x 2.24". Will not fit under stock hood of Corvette, 1964-67 Chevelle or 1967-81 Camaro.
Emissions Warning
Products sold on this website may not be legal for use on public roads or highways due to Environmental Protection Agency (EPA) restrictions or California Air Resources Board (CARB) emissions regulations. Federal and State regulations may restrict Product installation to pre-emissions regulation (Model Year 1974 or earlier) or to competition/racing vehicles used exclusively in
1) events organized by recognized bodies, authorizing permits for participating drivers.
2) racing event qualification, and3) practice associated with events.
Installation of such products, including driving racing vehicles to and from the track, may be considered illegal “tampering ” or as “defeat device”, and may result in federal and state penalties. It is the purchaser’s responsibility to ensure compliance with all applicable emissions laws, including California’s stricter standards.
Proposition 65 Warning:
This product may contain chemicals known to the state of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
- Engine Block Style:
- Stock/OEM standard deck
- Style:
- Dual plane
- Basic Operating RPM Range:
- 1,500-6,500
- Material:
- Aluminum
- Finish:
- Natural
- Height:
- 5.220 in.
- Intake Section Included:
- Complete
- Carburetor Mount:
- 4-barrel square bore
- Has Bosses:
- Yes
- Bosses Machined:
- No
- Boss Quantity:
- Eight
- EGR:
- No
- Quantity:
- Sold individually.
- Notes:
- Requires a gasket with a 2.54 in. x 1.82 in. port size or runner will not seal due to extra bolt locations. Do not use large port gaskets. Will not fit under the stock hood of a Corvette, 1965-67 Chevelle or 1967-81 Camaro.
- Make:
- Chevrolet
- Engine Family:
- Chevy big block Mark IV
- Engine Sizes:
- 6.5L/396-7.4L/454
- Years:
- 1966-1990
- Engine Family:
- Chevy big block Gen V
- Years:
- 1991-1995
- Engine Family:
- Chevy big block Gen VI
- Years:
- 1996-2000
- Engine Sizes:
- 7.4L/454
- Cylinder Head Style:
- Rectangular port
