Accufab 8500 Throttle Body

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$1,045.99
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$1,045.99

Vendor : Accufab

Product Type : accufab

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While it’s more than possible to use the 8500 on a big inch street machine (it features progressive linkage) it was designed to be used for race cars. Many nitrous Pro Mods, or Extreme Pro Stocks, or all-out naturally aspirated drag radial cars, have come to depend on the use of dual 8500’s.

Better Air Flow for More Power. The Accufab 8500 series 4-barrel throttle body uses the same 2.75-inch bores as the dual-bore “split Dominator style” units and flows 3,600+ CFM at 28-inches. There are no 4-barrel carburetors that can come close to matching that flow rating. If that’s not enough, racers can mount two of them together for double the volume.

With drag strip testing results in hand, Accufab decided to put that thinking into a replacement for the 4-barrel throttle body. In many race classes, racers are limited to a single 4-barrel carburetor or a single throttle body. Accufab used a clean sheet of paper for this one and came to the conclusion that the standard intake manifold opening for the largest carbs available (the 4500 series) was just not adequate.

Accufab’s goal was to design a better 4-barrel throttle body without trying to make it fit on the existing 22-square inch 4500 series intake manifold inlet opening, an inlet opening that was originally developed in 1969.

Our concept was to develop a new 4-barrel throttle body with a 33-square inch area. This size provides a 50% increase! Racers, or intake manifold manufacturers, will come up with better intakes to match the increase in air flow. Also, racers are creative and will figure out how to modify their existing 4500 series intakes to accept the 8500 throttle body with its slightly larger bolt pattern. A sheet metal plenum style intake manifold can be used as well.

Racers may use Accufab’s adapter to bolt the 8500 throttle body to any 4500 Dominator style intake manifold.

  •  The Accufab 8500 throttle body is made from 6061-T6 billet aluminum and polished to an eye-catching finish. Accufab’s quality is second to none! Only the best components are used for unparalleled reliability and performance. Center-dump type throttle linkage is included. Each throttle body weighs 3.5-pounds, compared to up to 13-pounds for a big 4500 series carburetor. Manufactured in the USA.

Application: This throttle body may be used with either EFI or mechanical fuel injection. For an EFI application, the throttle body is CNC machined to use a Ford Mustang 5.0L 1986-1993 throttle position sensor (TPS). However, Accufab has an optional accessory to help adapt this Ford style TPS provision to be used with GM electronics instead. For example, we offer a TPS adapter to use your GM TPS.

Accessories Included: 8500 throttle body gasket.

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