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Old 02-06-2007, 11:59 AM   #1
davidh
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Join Date: Feb 2004
Location: Ponca city now kingfisher Oklahoma
Posts: 1,220
Re: tell me about inline six/I have some question

I just bought a parts truck that has a 250 6, power glide, and power steering, Kind of rare for then. The 250 6 in good tuned up order should get you about 15mpg with a 3speed 3.73 rear end.
I've been talking to a tom who has a inliner parts page. If you want mileage you need to use HEI and a 5speed T5. His company sets them up with S10 casing and V8 internals. He has a 72 and gets 19.5mpg with it. the tranny cost btw $500-700. I plan on running a inliner in one of my old trucks.
I had a 67 250 3speed a few years and liked it. I would've kept it if the dash had not been all hacked up and idiot PO had spray canned over the original paint..
If you pick up 3-4 miles a gallon with the 5speed. At around 2.25 gallon it would take you give or take 100 fill ups(15-16gallons) to break even approx. Depends on how much you drive to justify the big purchase of the trans. 3speeds go for $50 usually
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