Automotive Racing Carburator Adapters & Holley 2 barrel Carb Hat.

Holley 2 Barrel Carb Adapter
Allows adjustable positioing of Holley 2 barrel on Q-Jet manifold or any intake with "inside" (4 1/4") bolt pattern.

#101 (1”) $74.50

Holley or Rochester
2 Barrel Carb Adapter
Adapts Rochester or Holley 2 barrel to (inside bolt pattern) Q-Jet intake.
#102 $89.00

#102-105 for outside bolt pattern - $89.00.

Note: When using the #101 or #102 adapter to position a 2 barrel carb over secondary bores of a Q-Jet manifold with an unmodified plenum area, special gasket #101G must be used to seal off primary bores of intake.

Holley 4 Barrel Carb Adapter

Adapts Holley 4 barrel carb to Q-Jet intake. We've tested several height combinations with a 4 barrel carb on the Q-Jet intake, and the 1” tall 4 hole spacer works best.
#104 $89.00

Holley 2 Barrel Carb Adapter
For aluminum intakes with
"outside" (5 5/32") bolt pattern.
#105 (1”) $74.50

#105-AR (1") with radius bottom $99.50

#105-1.5 (1.5”) $99.50

#114-1.5 (1.5") with radius bottom $145.00

#105-ALUM - Aluminum #105 adapter $99.50

"SideWays" Holley 2 Barrel Carb Adapter

Sideways adapter for Holley 2 barrel mounted on aluminum, open plenum intake.
#105SW $89.00

"Non-Adjustable", forward position Holley 2 Barrel Carb Adapter

For Holley 2 barrel mounted over forward part of intake. Popular for 2101 Edelbrock Performer intake. This is a non-adjustable adapter.
#105NA $89.00

Holley 2 Barrel Carb Adapter
Adapts Holley 2 barrel carb to Chevy 2 barrel intake.
#108 $55.00

#101 Carb Adapter Dyno Test

As you can see, our Part #101 Adapter produced 8 more horsepower at 5,500 rpm than a die cast aluminum adapter.

Test Engine: 355, stock Q-Jet intake, stock ’492 heads and 500 Holley 2 barrel.

#114 Carb Adapter Dyno Test

Don't make a 24 horsepower mistake!

We conducted a series of dyno tests on several different types of 2 barrel carb adapters. We ran one of the cheep die-cast aluminum adapters versus our #105 and #114 phenolic adapters. As you can see below, the results are very interesting.

Our #105 adapter out performed the die-cast aluminum adapter by 8 to 24 horsepower throughout the entire rpm range. Is saving a few dollars on a carb adapter worth losing 24 horsepower?

Test engine: 355 small-block, ported Dart heads, 1 3/4" headers, flat tappet cam, compression ratio 10.5 to 1. New style Team G manifold with stock 500 2 barrel Holley carb.

Dyno Proven 6 to 10 HP Gain!

There is no easier way to increase airflow with the Holley 2 barrel carb!

This 9" diameter Carb Hat® sits on top of your air cleaner base and fits snugly around choke tower to provide a smooth radius inlet into carb. Increases horsepower and torque through entire rpm range. Installs in seconds. Simply use racer’s tape and fasten to top of air cleaner base. Works best with Moroso 14" air cleaner assemblies. Instructions included.

Carb Hat® Dyno Tests

Tested with Moroso #65870 air cleaner assembly and a K&N filter. 355, 2 barrel cast-iron intake, ’492 heads, headers.