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Old 11-23-2010, 01:09 AM   #7
Captainfab
60-66 Nut

 
Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,250
Re: Gear Vendors Overdrives?

What do you mean by "four rail frame"?

Quote:
Originally Posted by fryco View Post
Thanks for the feed back, I'm knocking around different ways to get better fuel mileage. The old slug only gets about 3.5mpg rolling down hill with a tail wind, mostly because of its methanol fuel. I guess the 4.56 rear don't help either. I just want to get it over 5mpg. I could simply switch to race gas and roughly get 4- 6mpg. Its similar cost per mile.... But, I would need another carburetor, blah blah, blah... With that mind, $1000-$1500 for another carb or $2600 for the overdrive??? Which I don't know if it will fit (My truck has the four rail frame)

p.s. I know you can convert carburetors back and forth for fuel type.
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