Cliff's Quadrajet Parts and Rebuild Kits

Quadrajet Problem Solving => Quadrajet Parts and Numbers => Topic started by: semocoachworks on February 28, 2014, 03:22:52 PM

Title: What the heck do I have??? Carb # 7028280
Post by: 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!

Title: Re: What the heck do I have??? Carb # 7028280
Post by: Ethan1 on February 28, 2014, 04:28:13 PM

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!

 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.

Title: Re: What the heck do I have??? Carb # 7028280
Post by: semocoachworks on March 01, 2014, 09:04:32 AM

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.

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!

Title: Re: What the heck do I have??? Carb # 7028280
Post by: Shark Racer on March 01, 2014, 01:43:29 PM

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