

28-Tooth Drive Pulley
Aeromotive belt drive and hex drive components let you run a spur gear mechanical fuel pump off the engine, a proven setup for high horsepower race engines that need consistent fuel volume. This 28 tooth cog pulley sets the pump drive ratio.
Aeromotive 21109 Cog Belt Pulley Features:
- 28 Tooth
- Sold Individually
The Big Block Chevy Belt Drive Kit can produce 2 to 200 psi with enough volume to support a 2500 HP Big Block Chevy. Designed to mount lower left (modification required to mount on right).
Kit Includes:
- Fuel pump 027-11105 (below)
- Pump pulley & crank pulley
- Billet drive mandrel & cog belt
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- Mounting bracket, adjustment shims, and hardware if needed, compatible regulators for the kit are sold separately:
- EFI applications use regulator 027-13113
- Carbureted gasoline applications use regulator 027-13202 or 027-13212
- Carbureted alcohol applications use 027-13209 or 027-13214
The Big Block Chevy Belt Drive Fuel System guarantees unmatched pressure control and precise, accurate, repeatable, reliable fuel delivery for carbureted methanol or ethanol vehicles. It includes kit 027-17241 (above) and regulator 027-13209. Matched components maximize performance & consistency. Idle pressure can be adjusted separately from high-RPM settings without other jets, pills, or valves.
Billet Fuel Pumps are designed to solve fuel delivery problems in high-HP carbureted gasoline, carbureted methanol, or EFI applications. Available standard or high-flow with belt or hex drive, all billet fuel pumps are lightweight and compact. Standard pumps have ORB-10 ports and 3600 HP gas/1800 HP methanol ratings. High-flow pumps have removable ports with 1.25" inlet/-12AN O-ring outlet and 7000 HP gas/2500 HP methanol ratings. Hex units can be mounted and driven directly from the back of a properly prepared external oil pump or by the cam via timing cover adapter. They use a 3/8" hex drive shaft and adjustable billet collar with 3-bolt mounting pattern and hardware. Aeromotive Billet Fuel Pumps are also E85 compatible.
The Belt Drive Fuel Pump Kit is designed to provide the do-it-yourselfer with the components necessary to correctly install a full-on Aeromotive fuel system: fuel pump 027-11105 (below), universal billet collar bracket, and 28-tooth cog-driven pulley. The bracket allows pump mounting on the left or right of the damper. Compatible with carbureted or fuel-injected engines from 250 to 2000 horsepower.

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