Quadrajet Problem Solving > Quadrajet Parts and Numbers

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King Scooter:
Hi all
I bought what looks to be a good q-jet. Serial #17056202 B6 AAB.
It has an electric choke & side feed.
Can anyone give me some details of this carb? Is it considered the M4M? I'm hoping it's a good candidate for some mods to feed appx 320 hp street/performance car.
Car details are (or soon will be):
1972 Monte Carlo/355 ci/8.8:1 cr/268 adv duration/218@.050/oem 487x iron heads/Headers & 2-1/2" exhaust/200-4R auto/3.73 rear gears.
I expect to do a rebuild following Cliff's book and would like some recommendations for mods or settings adjustments to make it perform.
Any recommendations?
Thanks
Scott

Ethan1:

--- Quote from: King Scooter on April 25, 2016, 07:14:36 PM ---Hi all
I bought what looks to be a good q-jet. Serial #17056202 B6 AAB.
It has an electric choke & side feed.
Can anyone give me some details of this carb? Is it considered the M4M? I'm hoping it's a good candidate for some mods to feed appx 320 hp street/performance car.
Car details are (or soon will be):
1972 Monte Carlo/355 ci/8.8:1 cr/268 adv duration/218@.050/oem 487x iron heads/Headers & 2-1/2" exhaust/200-4R auto/3.73 rear gears.
I expect to do a rebuild following Cliff's book and would like some recommendations for mods or settings adjustments to make it perform.
Any recommendations?
Thanks
Scott

--- End quote ---

 That carb came off 1976's Chevrolet's and Camaro's 350cid, Federal, A/T.

 Stock specs of that carb were .077" Primary Jets, 48K Primary Metering Rods, "K" Secondary Hanger and CH Secondary Metering Rods.

 Yes, that carb is a M4MC QuadraJet. Also, that carb should have came with the Hot Air Choke. Not the E/C, but the upgrade is a positive one. Cliff would be best to answer, if it would be the right carb for your application. :)

 Take care, bud! 8)

Cliff Ruggles:
Nice carb and correct, it was originally "hot air" and the e-choke was added.  Make sure the vacuum to the housing is blocked, very few folks remember this step when converting to e-choke and create a vacuum leak that sucks dirty air into the engine as it's no longer a sealed system.

The carb is a great choice for what you are doing, but will need some good parts and minor tuning.  When you get time call the shop, we're here 8am-4pm, M-F EST....tks....Cliff

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