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RPM Air-Gap 2-R Intake Manifold BB-Chevy 396-502 w/rectangular port cylinder heads
InfoVehicle Info Needed
EDELBROCKPART NUMBER: 350-75621

RPM Air-Gap 2-R Intake Manifold BB-Chevy 396-502 w/rectangular port cylinder heads

$78795
2 left in stock
ShippingShips on Sep 14, 2026
Lowest PriceLowest Price Guarantee

Big Block Chevy
    RPM Air-Gap 2-R Intake Manifold
  • Big Block Chevy 396-502
  • Rectangle Port Heads
  • Square Bore Carb Flange (Non-EGR)
  • 1500-6500 RPM Range
  • Polished Finish

    Designed for Chevy 396-502 street applications with high-performance rectangular port heads, the RPM Air-Gap incorporates the race-winning technology that's been used on the Victor Series competition intakes. 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 carburetors only. No provision for exhaust-heated chokes and no exhaust crossover. Will not fit under stock hood of Corvette, 1965-67 Chevelle, or 1970-81 Camaro.

    Installation Notes
  • Port exit dimensions: 1.56" x 2.24"
  • Manifold height: (A) 4.45" , (B) 6.00"
  • Carb Pad Height: 5.22" p/n 555-210101

    Carb Recommendations
  • Edelbrock 650 cfm Thunder AVS Carburetor Manual Choke p/n 350-1905 , Electric Choke p/n 350-1906
  • Edelbrock 750 cfm Performer Carburetor Manual Choke p/n 350-1407 , Electric Choke p/n 350-1411
  • Edelbrock 800 cfm Performer Carburetor Manual Choke p/n 350-1412 , Electric Choke p/n 350-1413
  • Edelbrock 800 cfm Thunder AVS Carburetor Manual Choke p/n 350-1812 , Electric Choke p/n 350-1813

    Emissions Note:

    This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

    CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART

Since founder Vic Edelbrock Sr. began building performance intake manifolds in 1938, Edelbrock has grown into one of the most trusted names in American high-performance parts, from carburetors and intake manifolds to cylinder heads, crate engines, and EFI systems. JEGS has spent decades supplying Edelbrock components to racers, engine builders, and street enthusiasts, backing this extensive lineup with in-house technical support, fast shipping, and a Price Match Guarantee so you can choose proven Edelbrock parts with confidence.

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Dual-Plane Intakes with the Powerful Air-Gap Design

Edelbrock has brought race-inspired technology to the street, again! The RPM Air-Gap is a dual-plane intake manifold with a dropped plenum divider that separates the intake runners from the hot engine oil in the lifter valley. This provides a cooler, denser air/fuel charge for more power.

Edelbrock RPM Air-Gap Manifolds elevate street engine performance by using a race-inspired design that keeps your intake runners separated from the hot engine oil. The unique dropped plenum divider delivers a cooler, denser air/fuel mixture for increased power and efficiency—especially under spirited driving scenarios.

Constructed for serious enthusiasts, these manifolds employ a dual-plane layout that promotes strong throttle response and efficient air distribution across cylinders in the 1,500–6,500 RPM range. The air-gap design ensures cooler intake temperatures, translating to crisper performance and minimized heat soak during extended runs.

Here’s how the RPM Air-Gap stands out:

  • Race-Bred Cooling: The open air space under the plenum keeps the incoming charge cooler, maintaining air density and combating power-robbing heat accumulation—especially noticeable at elevated RPMs.

  • Proven Performance: Real-world dyno testing shows the Air-Gap manifold delivers slightly higher peak horsepower and torque compared to standard RPM models—packing a subtle but meaningful advantage.

  • Street-Savvy Engineering: Designed for everyday drivability as well as occasional track duty, it blends the power gains of performance tuning with the refinement needed for daily use.

For those outfitting a edelbrock air gap intake manifold, this product brings advanced thermal management and impressive multi-RPM performance gains. Enthusiasts looking for top-tier rpm air gap sbc upgrades get both competitive edge and street-ready reliability. And when considering an rpm air gap solution, you'll appreciate the blend of engineering finesse and proven performance delivery Edelbrock is known for.

Upgrade your small-block Chevy with a manifold that balances power and precision—where lower temperatures meet higher output.

Part TypeIntake Manifold
Product LineEdelbrock RPM Air-Gap Manifolds
BrandEDELBROCK
Package Height7.8
Package Width15.1
Package Length23.5
Weight22.41 PG
Part CategoryPerformance Parts
Engine Block StyleStock/OEM standard deck
UsageStreet/Hi-Performance
Number Of CarbsOne
Intake MaterialAluminum
PositionN/A
Intake StyleDual plane
EmissionWithout EGR
QuantitySold individually
Cylinder Head TypeRectangular Port
Intake FinishPolished
Carburetor QuantityOne
Engine Make/SizeChevy Big Block
Intake Section IncludedComplete
Basic Operating Rpm Range1,500-6,500
EgrWithout EGR
Rpm Range1500-6500
Part FitmentSemi Universal
Vendor Part Number75621
Package Qty1
Package TypeEA
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