Thread: Mileage?
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Old 02-02-2008, 11:35 AM   #32
PhilaTruck
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Join Date: Oct 2003
Location: Phila, PA 19130
Posts: 1,486
Re: Mileage?

Quote:
Originally Posted by gchemist View Post
Me too. I tell everyone. Buy a $15 vacuum guage. Connect it to the carb. Use this simple tuning guide. http://www.centuryperformance.com/vacuum.asp
There is more to tuning a carb, but
This is a great resource for the novice like me.

If anyone wants a PDF of this page, PM me & I'll email it to you. I'd post it, but it's too big (240K).

Sorry, almost forgot-

MPG:

low 20s hwy (Driving like a granny, not mine tho' she's got a lead foot.)
305
700R4
2WD
2.73:1
83 LWB

17 hwy (Easy, easy on the gas)
brand new 406
the rest is the same.

Now, with mods to stock Q-jet carb, I think it's less, but haven't checked.
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83 GMC 406 th400/3.73 Eaton Truetrac posi, headers, x pipe, & racePros. Tubular control arms, lowering rear springs, caltracs. Still ugly, but getting built right, although slowly

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Last edited by PhilaTruck; 02-02-2008 at 11:42 AM.
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