7521-CP RPM Air-Gap Intake Manifold Small Block Ford [Chrome Plasma Finish]

Name: 7521-CP RPM Air-Gap Intake Manifold Small Block Ford [Chrome Plasma Finish]
Brand: EDELBROCK
SKU: 350-7521-CP
Price: 574.95 USD
Availability: InStock

^$574⁹⁵

Ships on 09/14/2026

Lowest Price Guarantee

Ford

RPM Air-Gap Intake Manifold

Small Block Ford

4-bbl Square-Bore Carb Flange (non-EGR)

1500-6500 RPM Range

Chrome Plasma Finish

Sold Individually

Edelbrock 7521-CP Features:

Edelbrock 7521-CP RPM Air-Gap intake manifold is designed for Small-Block Ford 289-302 CID based V8's including 331-347 stroker applications. The RPM Air-Gap incorporates the same race-winning technology that’s been used on our Victor Series competition intakes and is the perfect manifold for hot rodders, street custom enthusiasts, bracket racers or any builder looking for optimum performance in the 1,500-6,500 RPM range with a serious look of horsepower under the hood. The Air-Gap design features an open air space under the plenum that separates the runners from the hot engine resulting in a cooler, denser charge for more power. The 7521 RPM Air-Gap features larger runners (7% at the plenum entries) than the standard 7121 Performer RPM design that is beneficial to larger CID stroker engines. This 7521-CP version comes with a beautiful reflective Chrome Plasma finish that is durable and easy to maintain. The Plasma finishes are applied by a fully automated 7 stage prewash and 4 stage finish. A durable clear powder coat finises the process. The 7521 includes nitrous bosses but no provision for exhaust heated chokes and no exhaust crossover. Edelbrock carbs will work with Ford automatic overdrive trans (AOD) when used with Lokar bracket SRK-4000.

Long runner high-rise design for broad torque curve
7 stage prewash and 4 stage coating for durability and beauty
Will not fit 255 c.i.d. V8; Not ideal for 289
Recommended intake gasket: Edelbrock 7220
Manifold Height: A-4.300 in., B-5.500 in.
Carb pad height: 4.900 in.
Carb recommendations: Edelbrock AVS2 650, Performer Series 600-750, or VRS-4150 650 cfm
For automatic transmissions use 1483 and 1490 or 1844
Port exit dimensions: 1.040 in. x 1.850 in.
Use RTV sealant to properly seal end seals, such as Edelbrock High Temp Silicone sealant Edelbrock 1076, DO NOT USE END SEALS GASKETS
Edelbrock 8524 intake manifold bolt kit which includes hardened washers to ensure proper torque and prevent galling of the aluminum is highly recommended.

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.

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 Height7.5

Package Width14.75

Package Length23.62

Weight20.8 PG

Part CategoryPerformance Parts

Engine Block StyleStock/OEM standard deck

UsageStreet/Hi-Performance

Number Of CarbsOne