| With most high performance engines (using large overlap cams) the
intake valve is not closed as the piston begins to travel upwards. This
causes some of the air fuel mixture to backup into the intake manifold
causing a reduction in vacuum. This leads to weak carburetor signal and
a loss of horsepower.
This spacer combination is designed to help alleviate that problem.
By not allowing the air fuel mixture to backup into the carburetor you
increase air fuel mixture quality, as well as, air fuel consumption.
These two attributes lead to increased horsepower and throttle response.
The spacers are CNC machined from 6061T-6 aluminum. The top plate is
½” high, while the bottom spacer is 1” thick.
With this spacer look for:
- Increased Horsepower Over the Entire RPM Range
- Better Throttle Response
- Stronger Carburetor Signal
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This spacer has been designed to form the bottom side of
the carburetor. The design increases airflow and air fuel mixture
quality by creating a pathway for the air fuel mixture to enter the
manifold. These two qualities lead to increased horsepower throughout
the entire rpm range of any motor (not just the "peak" power
number). This greatly differs from that of an open or four hole spacer
which create an abrupt transition from the carburetor to the manifold
which slows the air fuel mixture down and allows atomized fuel to drop
out of suspension and puddle (reducing low and midrange rpm
performance).
CNC machined from 6061T-6 aluminum with this spacer look for:
- Increased Horsepower (up to 20hp) Throughout the Entire RPM
Range
- Better Throttle Response
- Increased CFM Flow through the Carburetor
- Stronger Carburetor Signal
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The Track Results are In for the
Anti-Reversion Carb Spacer!
Runs were made at Douglas Speedway in Wyoming. The only change made
to the car was the addition of the anti-reversion spacer. The two
fastest runs from both before and after were chosen. Check out the time
slips below!
 
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The Velocity Carb Spacer on a 750 Holley Carb
The velocity spacer was placed on a 347ci small block Ford. The spacer increased the the overall horse power by almost 40 and
nearly doubled the vacumm. Check out the dyno pulls below!
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