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Old 12-18-2013, 07:20 AM   #10 (permalink)
aardvarcus
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Join Date: Apr 2012
Location: Evensville, TN
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Deep Blue - '94 GMC Suburban K2500 SLE
90 day: 23.75 mpg (US)

Griffin (T4R) - '99 Toyota 4Runner SR5
90 day: 25.43 mpg (US)
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Quote:
Originally Posted by jonbest View Post
Ha. I can fool her occasionally, but that's probably a bit much.

MAN is there huge variety in engine prices!

New wrinkle- there's a fairly cheap, low mileage truck with a fuel tank and rust problem I could get for the engine and 4 speed OD manual. Any thoughts on whether the additional (probably $700 plus some labor) expense would net much efficiency gain over a good condition 700R4?

Jon
What four speed manual? The biggest concern I would have is if you change the lengths of your transmission, you will have to change the length of your driveshaft. I swapped a NV4500 5 speed overdrive into my 91 K2500 LD in place of my 700R4/4L60, because it was within 1/8”. That was a 4x4 though, you would have to check for a 2wd. Or perhaps you don’t mind changing driveshaft lengths.

Anyway I went from 10.5-13 MPG with the 700R4 to 13-15.5 MPG with the NV4500, no real change in driving style. (Note 4x4, 5.7L TBI, RCLB 6 Lug K2500)
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