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05-29-2007, 06:43 PM
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Who's got steelies?
 
Join Date: Feb 2006
Location: Morrison, Oklahoma
Posts: 1,025
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Re: mileage motors
My 305 has 189,000 miles on it.
It came from a '77 Monte Carlo. It was repeatedly overheated on a trip from OK to Calif. & back. Has only a 2bbl carb Sat for a year before being put in the truck. Best milage (after tuning it up a few weeks ago) was 18.6 mpg for 1 tank. Before it was 15.mpg. In the Monte, best was on a trip from OK to NM was 21mpg. I am running 3.73 rear gears, stay about 60 on the highway. Future plans: 4bbl Q-Jet or Edelbrock, 3.08 gears.
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 1969 C10 LWB W/ 250 I6 & 3spd1970 C10 with '67 small window cab, 68 front end, blue; 305/TH350, 3.08 limited slip rear end, manual brakes, power steering; & 4-wheel drums-My daily driver.1975 Chevelle Malibu Classic Coupe 350/th350 mint green1970 C20 Suburban 350/700R4 4.10 gearing green & white 1978 Big 10 Silverado 350/th350, working ac, 2 tone blue-My summer daily driver 1983 GMC 1500 Sierra 305/SM465 2.73 rear end How to add a trip odometer to your 67-72 stock speedometer How to rebuild your Q-Jet My Truck Page My Youtube Channel |
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