Can I use an electronic Q-Jet on my 1972 C-10? - Hot Rod Forum : Hotrodders Bulletin Board
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Old 11-07-2010, 05:18 AM
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Can I use an electronic Q-Jet on my 1972 C-10?

I'll need your help to decide if a Q Jet I bought in ebay for my 1972 C-10 can be use on my truck. I noticed this 3 wires plug at front just when I received the carb. I will try to attach a photo of this carb. Also, I do not know the carb number because all it shows is a white sticker (driver side) with a bar code and what look to be four numbers that I can not read. Thank you for your help.
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Old 11-07-2010, 06:25 AM
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That carb comes from a early to mid 80s system. The device is called a MC soleniod. I beleive it runs the metering rods and without the prehistoric computer and all the sensors that run it wont work on a 70s engine. The carb goes to a full rich mode if anything fails which will get ya home....maybe. I dont know if it can be modified but maybe someone else will chime in.
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Old 11-07-2010, 06:26 AM
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That feedback carb will not work satisfactorily on a street engine/vehicle w/o the computer.

The feedback carb can be used on a drag engine by removing the metering rods and running off of just jets on the primary side (along w/other mods)- but that is not what you would want to do on a street-driven vehicle.

There should be stamped numbers that run vertically along the driver side of the carb, as shown in the image:


The numbers can be deciphered HERE.
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Old 11-07-2010, 07:15 AM
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Can I use an electronic Q-Jet on my 1972 C-10?

Thank you for your prompt reply... I guess I will end buying another carb, this time I must be more careful. Thank you guys.
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Old 11-07-2010, 09:27 AM
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Quote:
Originally Posted by cu42
Thank you for your prompt reply... I guess I will end buying another carb, this time I must be more careful. Thank you guys.
Feel free to link to any carbs you may be considering. There are several important things to consider, and there are differences between Q-jet carbs that are engine or brand-specific, like the linkage compatibility between different models/transmission types, etc.
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Old 11-08-2010, 02:12 AM
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that electronic qjet would run FILTHY rich w/o a computer to control the mixture solonoid. best place for that is at the bottom of the nearest lake.. or a scrap pile if you are environmentally conscious
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