MANIFOLD HOLLEY, 74-85 12A BRIDGEPORT

Name: MANIFOLD HOLLEY, 74-85 12A BRIDGEPORT
SKU: 16466
Price: 430.53 USD
Availability: PreOrder

Holley Manifold, 74-85 12A Bridgeport (74-85)

The Racing Beat-designed intake manifold (1-9/16″ throttle bore diameter), for the 1971-85 12A Bridge-ported engine is ideally suited to meet the performance requirements of the Holley carburetor. Designed by Chief Engineer/Engine Builder Jim Mederer, these cast aluminum intake manifolds have proven themselves in a variety of street and race applications.

All of Racing Beat’s manifolds for Holley carburetor applications are sand-cast by a local foundries and delivered to our in-house production shop for all machining and surface finishing processes. Select manifolds are then hand-ported to match a specific intake port configuration for an intended engine application. Further machining is then undertaken to match the base-plate surface to the Holley carburetor base. These critical machining steps ensure a positive fitment between both the engine surface and the carburetor base. Every manifold is then surface finished using a ball-burnishing process that enhances the final appearance of the aluminum material. Once these labor-intensive processes have been completed these manifolds look as good as they perform!

This manifold includes does not include a vacuum source for power brakes. If needed, an engine-to-manifold gasket, and/or Holley base gasket are available separately.

SKU:

16466

MANIFOLD HOLLEY, 74-85 12A BRIDGEPORT

$430.53

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MANIFOLD HOLLEY, 74-78 12A
Holley Manifold, 74-78 12A Stock port

The Racing Beat-designed intake manifold for the 1974-78 12A Stock and Street-ported engine is ideally suited to meet the performance requirements of the Holley carburetor. Designed by Chief Engineer/Engine Builder Jim Mederer, these cast aluminum intake manifolds have proven themselves in a variety of street and race applications.

All of Racing Beat’s manifolds for Holley carburetor applications are sand-cast by a local foundries and delivered to our in-house production shop for all machining and surface finishing processes. Select manifolds are then hand-ported to match a specific intake port configuration for an intended engine application. Further machining is then undertaken to match the base-plate surface to the Holley carburetor base. These critical machining steps ensure a positive fitment between both the engine surface and the carburetor base. Every manifold is then surface finished using a ball-burnishing process that enhances the final appearance of the aluminum material. Once these labor-intensive processes have been completed these manifolds look as good as they perform!

SKU: 16463

$406.28
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HOLLEY 12A STOCK, 76-85 NO PORT —NLA—
Sorry, this item has been discontinued.

Racing Beat Holley Stock port 12A 76-85 (465cfm carb)

Complete Ready-to-Install Kit
One of most significant benefits of this complete ready-to-go kit is that is takes all the guesswork, trial-and-error, and frustration out of attempting to assembly your own intake kit! We’ve taken over 40 years of our rotary engine experience and know-how and combined it for you in this complete, ready-to-install kit. Our intake kits has been thoroughly developed and tested using our in-house engine dyno to ensure maximum performance for each specific engine application.

Rotary-tuned By Racing Beat
The heart of each intake system is a performance-proven 4-barrel Holley carburetor. Depending on the requirements of each specific application, the carburetor is disassembled by Racing Beat’s carburetor technicians then reworked, retuned, and reconfigured specifically for use with a designated rotary engine application. This process is not a simple “re-jetting” project, but a complex series of steps requiring machining, drilling and reconfiguring of the main and metering bodies, adjustment of the float bowls, and complete replacement of all jets. Each application has been fully developed and tested on our in-house dyno facility to ensure maximum performance.

Each comprehensive package includes a Racing Beat cast-aluminum high-rise intake manifold with a vacuum source for power brakes, a Racing Beat-modified Holley carburetor (465 CFM), foam air cleaner and canister assembly, throttle and metering oil pump linkages, and appropriate gaskets. All emissions control fittings are eliminated. This carburetor includes a vacuum-operated choke.

Performance
When installed on a 1976-78 RX-3 or a 1979-85 RX-7 12A engine, this kit increases engine output by approximately 20 HP with the stock exhaust system. However, for increased performance gains we strongly recommend the installation of an exhaust header/presilencer/Power Pulse Muffler combo (10+ HP) or an open exhaust (15+ HP) – resulting in total performance gains of between 30-35 HP depending on your specific intake/exhaust configuration..

SKU: 18009

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HOLLEY 12A STREET PORT, 76-85 —NLA—
Sorry, this item has been discontinued

Racing Beat Holley, 76-85 Street port 12A (465 cfm carb)

Complete Ready-To-Install Kit
One of most significant benefits of this complete ready-to-go kit is that is takes all the guesswork, trial-and-error, and frustration out of attempting to assembly your own intake kit! Racing Beat has taken over 40 years of their rotary engine experience and know-how and combined it for you in this complete, ready-to-install kit. Racing Beat’s intake kits has been thoroughly developed and tested using their in-house engine dyno to ensure maximum performance for each specific engine application.

Rotary-tuned By Racing Beat
The heart of each intake system is a performance-proven Holley carburetor. Depending on the requirements of each specific application, the carburetor is disassembled by Racing Beat’s carburetor technicians then reworked, retuned, and reconfigured specifically for use with a designated rotary engine application. This process is not a simple “re-jetting” project, but a complex series of steps requiring machining, drilling and reconfiguring of the main and metering bodies, adjustment of the float bowls, and complete replacement of all jets.

Each comprehensive package includes a Racing Beat cast-aluminum high-rise intake manifold with a vacuum source for power brakes, a Racing Beat-modified Holley carburetor (465 CFM), foam air cleaner and canister assembly, throttle and metering oil pump linkages, and appropriate gaskets. All emissions control fittings are eliminated. This carburetor includes a vacuum-operated choke. The Racing Beat Kit for the Street Port engine includes the same basic components as our non-ported engine Holley Kits (P/N 18009); however, the specific internal modifications to the 465 CFM carburetor are significantly different.

Each comprehensive package includes a cast aluminum high-rise intake manifold with a vacuum source for power brakes, a Racing Beat-modified Holley carburetor (465 CFM), foam air cleaner and canister assembly, throttle and metering oil pump linkages, and appropriate gaskets. All emissions control fittings are eliminated.

Exhaust headers must be used with this street port intake system to achieve maximum horsepower gains.

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HOLLEY THROTTLE CABLE BRACKET
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