Quadrajet Problem Solving > Quadrajet Parts and Numbers

What the heck do I have??? Carb # 7028280

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semocoachworks:
Hello all. I took a Q-jet off of my 1970 chevy 4x4, 350cid when I switched to HEI ignition. It has no vacuum ports other than the choke pull off? I threw a edelbrock on just to set the timing etc. What is this carb off of? Any help would be appreciated!

Ethan1:

--- Quote from: semocoachworks on February 28, 2014, 03:22:52 PM ---Hello all. I took a Q-jet off of my 1970 chevy 4x4, 350cid when I switched to HEI ignition. It has no vacuum ports other than the choke pull off? I threw a edelbrock on just to set the timing etc. What is this carb off of? Any help would be appreciated!

--- End quote ---

 Welcome to CHP!

 You have a marine carb. Carb 7028280 is from a 1968 O.M.C-Stern Drive-Cobra-I/O 283cid/307cid. Stock specs for this carb were: .071" Primary Jets, 42 Primary Metering Rods, "K" Secondary Hanger and AV Secondary Metering Rods.

semocoachworks:

--- Quote from: Ethan1 on February 28, 2014, 04:28:13 PM --- Welcome to CHP!

 You have a marine carb. Carb 7028280 is from a 1968 O.M.C-Stern Drive-Cobra-I/O 283cid/307cid. Stock specs for this carb were: .071" Primary Jets, 42 Primary Metering Rods, "K" Secondary Hanger and AV Secondary Metering Rods.

--- End quote ---

Thank you for the welcome and the reply! This carb ran great with the points distributor. I guess I'll have to look for another Q jet to replace this one with. Thanks again for the help!

Shark Racer:
You could add a port in the rear of the base plate for manifold vacuum.

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