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Author Topic:   Predator Carbs
H8CHEVY
Gearhead

Posts: 239
From: Southern Cali
Registered: Jun 2000

posted 03-12-2002 05:28 AM     Click Here to See the Profile for H8CHEVY   Click Here to Email H8CHEVY     Edit/Delete Message   Reply w/Quote
Ran into a guy at the drags, hes running a predator carb. Have never seen one in person before, can anyone give me a quick background on these carbs? why havent I seen more of these carbs around? how do they compare to the new race demon carbs that are out? looking to swap on a new carb....

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Mpcoluv
Gearhead

Posts: 446
From: Charlotte NC usa
Registered: Apr 2001

posted 03-12-2002 07:26 AM     Click Here to See the Profile for Mpcoluv   Click Here to Email Mpcoluv     Edit/Delete Message   Reply w/Quote
Hi,
I run a predator on a 372C in my 69 mustang.
First, they are huge. you will almost always need a Boss 429 scoop to run one of these carbs.
This type if carb is very simple to adjust, and has killer throttel response. I think it works especially well on engines with poor port velocity (4V 351C).
Most racing bodies don't allow this carb to be used in heads up racing. Therefore you seldom see one at the strip.
Monster trucks use them. Also be aware that not all predators have an idle circuit. If you have an idle below 850 rpm, you need the idle circuit. If you have a lumpy cam, you don't need the idle circuit.

------------------
Jim Sams
'69 mustang Coupe
372C

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SundanceKid
Gearhead

Posts: 732
From: UT
Registered: Feb 2001

posted 03-12-2002 03:08 PM     Click Here to See the Profile for SundanceKid   Click Here to Email SundanceKid     Edit/Delete Message   Reply w/Quote
How would a pedator work on a street/strip car? How is the part throttle? Economy if any? Just currious.

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H8CHEVY
Gearhead

Posts: 239
From: Southern Cali
Registered: Jun 2000

posted 03-12-2002 04:36 PM     Click Here to See the Profile for H8CHEVY   Click Here to Email H8CHEVY     Edit/Delete Message   Reply w/Quote
I see that summit sells this carb with the idle circuit ready for street stip use... how do these carbs compare to demons??? thanks

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Mpcoluv
Gearhead

Posts: 446
From: Charlotte NC usa
Registered: Apr 2001

posted 03-12-2002 06:09 PM     Click Here to See the Profile for Mpcoluv   Click Here to Email Mpcoluv     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by SundanceKid:
How would a pedator work on a street/strip car? How is the part throttle? Economy if any? Just currious.

Fuel economy is worse than a holley.
Drivability is great. Part throttle is great.

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Mpcoluv
Gearhead

Posts: 446
From: Charlotte NC usa
Registered: Apr 2001

posted 03-12-2002 06:12 PM     Click Here to See the Profile for Mpcoluv   Click Here to Email Mpcoluv     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by H8CHEVY:
I see that summit sells this carb with the idle circuit ready for street stip use... how do these carbs compare to demons??? thanks

Well as far as absolute power goes...it depends on your intake. All modern intakes are designed for a 4 barrel fuel discharge pattern. Predators are said to suffer from intake related power losses. Mine works great on a 351C Strip Dominator though.
Like I said, if you can now idle below 850rpm get one with the idle circuit. If not, then the idle cuircuit will not do you any good.

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H8CHEVY
Gearhead

Posts: 239
From: Southern Cali
Registered: Jun 2000

posted 03-12-2002 09:06 PM     Click Here to See the Profile for H8CHEVY   Click Here to Email H8CHEVY     Edit/Delete Message   Reply w/Quote
im running the rpm air gap right now... I do idle below 850 so I was looking at the one with idle circuit. as far as keeping up with adjustments are they like the holleys and need to be tuned all the time or are they more like a edelbrock?? Mpcoluv what other carbs have you ran on your motor? and how do you rate them to the predator?? thanks for the info!

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Mpcoluv
Gearhead

Posts: 446
From: Charlotte NC usa
Registered: Apr 2001

posted 03-13-2002 09:44 AM     Click Here to See the Profile for Mpcoluv   Click Here to Email Mpcoluv     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by H8CHEVY:
im running the rpm air gap right now... I do idle below 850 so I was looking at the one with idle circuit. as far as keeping up with adjustments are they like the holleys and need to be tuned all the time or are they more like a edelbrock?? Mpcoluv what other carbs have you ran on your motor? and how do you rate them to the predator?? thanks for the info!

I have used the Edelbrock 750 before. The predator with the strip dominator made more power everywhere. I have only tuned it once so far. with the exception of cold start, I would rate it far above the edelbrock.
I have a new holley 750 Annular that I will try soon and compare.
You did notice that the Predator is huge and will require a hood scoop. You will also need a 1" open spacer with the Air-gap intake.

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