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Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Transmission - Rearend> For what it's worth, 2-3 lockup 700R4 good for 1 MPG
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Topic Review (Newest First)
06-22-2006 04:43 PM
LanceM That's what everyone tells me, and it's a V-6 700 at that, changed the filter twice I think...
06-22-2006 04:35 PM
Jmark You've got 225,000 miles on a 700??? That sucker belongs in Ripleys Believe it or not!
06-22-2006 03:30 PM
For what it's worth, 2-3 lockup 700R4 good for 1 MPG

In my quest for even a little better MPG in my Jimmy I tried using 2-3 lockup on the 700R4 using the method shown on Crosley's website. Gained 1 MPG and with a flip of a switch can go back to 4th only lockup. May not seem like much but driving 80 miles a day it adds up. What I found interesting is that I never thought I spent much time going through the gears being that most of my driving is at highway speeds. Don't know what this is doing to the tranny, but it already has 225K miles on it and nothing lives forever...

BTW this is in a 91 S15 Jimmy with a 350 .030 over, Summit 204/214 cam, Quadrajet, headers, duels, 3.42 gears, 16.5 MPG before 17.5 MPG W/2-3 lock.


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