Mystery spreadbore double pumper...

[Brandy]

Came with a 440 wedge. I have checked all reference materials and so far I think it's holley spreadbore q-jet double pumper list # 6772
or
"""""""""# 4237
or
"""""""""L6772
So really..i have no real clue.lol. HELP!!!
I would like to KNOW what this is, how old it is, CFM # and what it's good for. IE on my 440 or not....

 

[Brandy]

more pictures....

 

[mmissile]

Q-Jet replacement. 650cfm, double-pump. Probably okay on a stock 440.

 

[moparwacko]

Ditto, Q jet replacement- run away!!
It's a real 650 DP, but NAH
Would not recommend, sell it to your GM buddy

 

[Brandy]

So is it worth rebuilding?

 

[Cranky]

Hell no!! Give to some unsuspecting Chevy guy LOL. I'm serious! Never ever had any good dealings with one of those POS's. Worst carb Holly ever built!

 

[Brandy]

Well alrighty then! Thanks guys.

 

[moparwacko]

It's an off bred spread bore conglomeration.
It may have some value to a Chebby guy but doubtful.
I know of a new 800 AVS that might be for sale hehe

 

[Photon440]

It's probably old, originally made to replace 66 - 73 Quadrajets. The last time I had one of those was in 1981.

 

[HEMI-ITIS]

I have an adapter in te garage,,,,,,,,,,somwhere

 

[HerlitzGTX]

71-72 Quadrajet replacement carb.

 

[68 HEMI GTS]

They run good, not sure what all the fuss is about. Probably a little small on a 440 though.

 

[Tempest 455]

Hell no!! Give to some unsuspecting Chevy guy LOL. I'm serious! Never ever had any good dealings with one of those POS's. Worst carb Holly ever built!

The Avenger series is by far the worst built.

 

[oldbee]

Rebuild and try it. Probably good street throttle response. Can't hurt..

 

[Brandy]

It came with the long block for free. I can ditch it, no sweat. Want a 850 Mighty Demon anyway. I'm going to follow IQ52's plan for the motor as It's the same motor he was using with 346 heads and stock valves sizes. I figured around 1800 bucks for the carb, RPM Performer intake, Crane Gold Race rockers, Comp cam. With some judicious porting he shows where you can get just over 500 HP with the 346's, stock valves, and the small cam. All about air flow. Be around 8.9:1 compression. Need to score a bunch of other parts too, but I expect most of it can be found around in the salvage yards or on here at FBBO. Anyone need a stock 440/4 intake? lol.

 

[ckessel]

If you decide to toss it, keep the 50cc rear accelerator pump unit. Having a free one beats buying one from Holley as they are expensive.

 

[wagonman]

I have one of those buggers sitting on a shelf. Wall art at best.

 

[Cranky]

The Avenger series is by far the worst built.

In a different era lol