these carbs looked like a really nice concept, but the lack of traditional looks of the carb leave the more conservative guys cold!
but I have gotten wildly varying reports from those using them, most guys that actually have run them loved them, most guys never bothered to test one and simply dismissed them as an ODD looking carb.
I bought two and tested them on my car back in the 1970s, they ran ok, once I got the setup on the linkage correct.
"The Predator Carburetor
The variable venturi design of the Predator carburetor allows it to work strictly off of the air demand of the engine and meters fuel in a direct relationship to that demand. As a result, the engine is never "under" or "over" carbureted at any engine rpm or load.
In addition, with no jets to change, no leaking power valves and no internal gaskets to swell, this high performance carburetor is relatively maintenance free"
http://www.callieskustoms.com/CalliesKu ... dator.html
http://callieskustoms.com/CalliesKustoms-Predator.html
Predator
810 Cross Street
Lakewood, NJ
08701
USA
tel 732-367-8487
fax 732-367-0148
http://www.callieskustoms.com/CalliesKu ... dator.html
http://www.predatorcarb.com/home.html
http://www.predatorcarb.com/predator_manual.PDF
http://www.carburetorsandmore.com/predator_carb.htm
http://carburetorsandmore.com/predator_carb.htm
http://www.predatorcarb.com/predator_manual.PDF
Predator with idle circuit...................6000PXI
They produce up to 930 cfm's.
For street applications of the 6000PXP, where frequent braking is a consideration, we
recommend that the fuel bowl be pointed to the rear to ensure fuel delivery under
deceleration. Owners of drag race, circle track and off-road vehicles, on the other hand,
will find that the Predator works best with the fuel bowl point forward (due to vehicle rise
upon acceleration).
For owners of the 6000PXI, proper mounting position is fuel bowl
forward.
The Predator's flow and idle capabilities make it ideal for fueling 300 to 500 cubic-inch
engines. When installed on an engine within this range the Predator will permit idle
speeds as low as 800 to 1200 rpm.
Single 4-bbl.
The installation of a Predator 6000 on any performance-oriented application will produce
a noticeable improvement in throttle response. A slotted base plate permits attachment to
any four-barrel intake manifold.
Carburetor Spacers
Due to the Predator's use of a fuel-metering block positioned over two rectangular throttle
blades, the air/fuel mixture flowing down the center tends to be richer than that on the
outer sides. To provide additional manifold volume for the mixture to homogenize, we
recommend the use of a carburetor spacer, especially on dual-plane manifold
applications. We've found that a 1" or 2" spacer works exceptionally well
Nitrous
We've found nitrous oxide to be a perfect compliment to the incredible performance
characteristics of the Predator. When a plate-type nitrous system is employed, the plate
also acts as a carburetor spacer promoting better air-fuel mixtures for maximum
horsepower.
Tunnel Ram
By combining the Predator's low-end torque characteristics with the top-end charge of a
tunnel ram, the performance enthusiast can have the best of both worlds. Add to this the
use of variable venturi carburetors and you can see why a Predator-topped tunnel ram
application can be the perfect solution for street/strip excitement.
Blower
Superchargers, whether of the 6-71, mini, or draw-thru turbocharger type, perform a dualpurpose
function. In addition to their air compressing qualities, superchargers help to
ensure complete homogenization of the air-fuel mixture,
FUEL FLOW REQUIREMENTS FOR MAXIMUM PERFORMANCE
Fuel Pump 70 GPH or 420 lbs. per hour
Fuel Regulator 6 or 7 PSI flowing (wide open throttle)
Fuel Line Tank to Pump Pump to Regulator Regulator to Carb.
1/2" I.D. hose or #8 A/N 3/8" I.D. hose or #6 A/N
Fuel Filter In-line will work but a canister high volume is best.
Multiple Carb
Set-ups
Separate pumps, lines and regulators should be used.
For large demand motors such as race boats, tractor pullers, etc., our Fuel Bowl
Extension (Part #6085) is recommended
Frequently Asked Questions
How does the Predator work?
The Predator is a variable venturi design that works off of the air demand of the motor and meters fuel accordingly. Thus, provided that you have the proper fuel metering cam for your application, you will neither be undercarbureted or overcarbureted with the Predator at any given rpm range.
What kind of carburetor is the Predator suitable to replace?
The Predator replaces four barrel carburetor applications from 600 cfm to 930 cfm.
What is the Predator fuel metering cam?
The Predator fuel metering cam is a flat piece of brass located inside the fuel bowl that is cut to a certain slope. The slope of this cam is what determines the air/fuel ratio from roughly 3000rpm and up.
How easily can the throttle linkage be installed?
The 6000 is equipped with a simple throttle arm which has two 1/4" diameter holes in it for easy adjustment and quick installation.
What are the adjustments on the Predator?
The three simple adjustments are idle mixture, idle speed, and upper rpm metering cam change.
Is there an air cleaner adapter available?
A standard 5" o.d. air cleaner adapter is included with every purchase of the Predator 6000.
Are there any vacuum hose connections on the Predator?
No, there are no vacuum hose connections on the Predator.
How tall is it?
The Predator is 5 1/4" in height from the bottom of the base to the rim of the air cleaner adapter.
How does it work with nitrous oxide, blowers, and turbos?
The Predator is an excellent application when used in conjunction with nitrous oxide, on a blower, or with a turbo charger (draw though type).
How much fuel psi is required for "all-out" maximum performance?
On a naturally aspirated motor, 6 psi at wide open throttle is required for maximum performance
but I have gotten wildly varying reports from those using them, most guys that actually have run them loved them, most guys never bothered to test one and simply dismissed them as an ODD looking carb.
I bought two and tested them on my car back in the 1970s, they ran ok, once I got the setup on the linkage correct.
"The Predator Carburetor
The variable venturi design of the Predator carburetor allows it to work strictly off of the air demand of the engine and meters fuel in a direct relationship to that demand. As a result, the engine is never "under" or "over" carbureted at any engine rpm or load.
In addition, with no jets to change, no leaking power valves and no internal gaskets to swell, this high performance carburetor is relatively maintenance free"
http://www.callieskustoms.com/CalliesKu ... dator.html
http://callieskustoms.com/CalliesKustoms-Predator.html
Predator
810 Cross Street
Lakewood, NJ
08701
USA
tel 732-367-8487
fax 732-367-0148
http://www.callieskustoms.com/CalliesKu ... dator.html
http://www.predatorcarb.com/home.html
http://www.predatorcarb.com/predator_manual.PDF
http://www.carburetorsandmore.com/predator_carb.htm
http://carburetorsandmore.com/predator_carb.htm
http://www.predatorcarb.com/predator_manual.PDF
Predator with idle circuit...................6000PXI
They produce up to 930 cfm's.
For street applications of the 6000PXP, where frequent braking is a consideration, we
recommend that the fuel bowl be pointed to the rear to ensure fuel delivery under
deceleration. Owners of drag race, circle track and off-road vehicles, on the other hand,
will find that the Predator works best with the fuel bowl point forward (due to vehicle rise
upon acceleration).
For owners of the 6000PXI, proper mounting position is fuel bowl
forward.
The Predator's flow and idle capabilities make it ideal for fueling 300 to 500 cubic-inch
engines. When installed on an engine within this range the Predator will permit idle
speeds as low as 800 to 1200 rpm.
Single 4-bbl.
The installation of a Predator 6000 on any performance-oriented application will produce
a noticeable improvement in throttle response. A slotted base plate permits attachment to
any four-barrel intake manifold.
Carburetor Spacers
Due to the Predator's use of a fuel-metering block positioned over two rectangular throttle
blades, the air/fuel mixture flowing down the center tends to be richer than that on the
outer sides. To provide additional manifold volume for the mixture to homogenize, we
recommend the use of a carburetor spacer, especially on dual-plane manifold
applications. We've found that a 1" or 2" spacer works exceptionally well
Nitrous
We've found nitrous oxide to be a perfect compliment to the incredible performance
characteristics of the Predator. When a plate-type nitrous system is employed, the plate
also acts as a carburetor spacer promoting better air-fuel mixtures for maximum
horsepower.
Tunnel Ram
By combining the Predator's low-end torque characteristics with the top-end charge of a
tunnel ram, the performance enthusiast can have the best of both worlds. Add to this the
use of variable venturi carburetors and you can see why a Predator-topped tunnel ram
application can be the perfect solution for street/strip excitement.
Blower
Superchargers, whether of the 6-71, mini, or draw-thru turbocharger type, perform a dualpurpose
function. In addition to their air compressing qualities, superchargers help to
ensure complete homogenization of the air-fuel mixture,
FUEL FLOW REQUIREMENTS FOR MAXIMUM PERFORMANCE
Fuel Pump 70 GPH or 420 lbs. per hour
Fuel Regulator 6 or 7 PSI flowing (wide open throttle)
Fuel Line Tank to Pump Pump to Regulator Regulator to Carb.
1/2" I.D. hose or #8 A/N 3/8" I.D. hose or #6 A/N
Fuel Filter In-line will work but a canister high volume is best.
Multiple Carb
Set-ups
Separate pumps, lines and regulators should be used.
For large demand motors such as race boats, tractor pullers, etc., our Fuel Bowl
Extension (Part #6085) is recommended
Frequently Asked Questions
How does the Predator work?
The Predator is a variable venturi design that works off of the air demand of the motor and meters fuel accordingly. Thus, provided that you have the proper fuel metering cam for your application, you will neither be undercarbureted or overcarbureted with the Predator at any given rpm range.
What kind of carburetor is the Predator suitable to replace?
The Predator replaces four barrel carburetor applications from 600 cfm to 930 cfm.
What is the Predator fuel metering cam?
The Predator fuel metering cam is a flat piece of brass located inside the fuel bowl that is cut to a certain slope. The slope of this cam is what determines the air/fuel ratio from roughly 3000rpm and up.
How easily can the throttle linkage be installed?
The 6000 is equipped with a simple throttle arm which has two 1/4" diameter holes in it for easy adjustment and quick installation.
What are the adjustments on the Predator?
The three simple adjustments are idle mixture, idle speed, and upper rpm metering cam change.
Is there an air cleaner adapter available?
A standard 5" o.d. air cleaner adapter is included with every purchase of the Predator 6000.
Are there any vacuum hose connections on the Predator?
No, there are no vacuum hose connections on the Predator.
How tall is it?
The Predator is 5 1/4" in height from the bottom of the base to the rim of the air cleaner adapter.
How does it work with nitrous oxide, blowers, and turbos?
The Predator is an excellent application when used in conjunction with nitrous oxide, on a blower, or with a turbo charger (draw though type).
How much fuel psi is required for "all-out" maximum performance?
On a naturally aspirated motor, 6 psi at wide open throttle is required for maximum performance
Last edited by a moderator:
