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Old 08-06-2016, 10:58 PM   #1
Bandit130
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Carb selection

74 C10 350 w/Carter Quadrajet carb. Not satisfied with gas milage, around 9 to 11 mpg. Carb may need rebuilt. Mulling over whether to rebuild or get a 600 cfm Edelbrock. Are there any suggestions?

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Old 08-07-2016, 09:08 AM   #2
geezer#99
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Re: Carb selection

Probably not the best move for mileage. You'll need to adapt an eddy to your intake. You'll spend a few hundred and likely get the same or worse mileage!

Tune the wazoo out of what you got first!!
What's your timing curve like?
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Old 08-07-2016, 09:27 AM   #3
old Rusty C10
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Re: Carb selection

the best bet for mileage is having your quyadrajet rebuilt and the motor properly tuned my edelbrock 650 had a note on the box that its not meant for any kind of emissions standards in any state so if emissions are high I am sure mileage is low
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Old 08-07-2016, 09:45 AM   #4
Desert1957
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Re: Carb selection

Without knowing your tire size, rear end ratio, or transmission info 3 or 4 speed. mileage doesn't sound that bad. IMO

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Old 08-07-2016, 11:39 AM   #5
friscobob
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Re: Carb selection

I see the prices on throttle body injection is stating to come down, not sure if I can mention brand names or sources here.
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Old 08-07-2016, 02:36 PM   #6
Dead Parrot
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Re: Carb selection

A properly setup Qjet is the best carb for a daily driver type of truck. Trick is finding someone that can do a good job.

+1 to Desert's comments on drive train. My 75 350/TH350 with 3.42 rear end gets between 12 and 14mpg highway depending on speed. Just over 12 @ 70, 14 around 60.

Point distributor or HEI? Not sure of final year for points.
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