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Unread 05-20-2013, 09:06 AM   #16
kickingprop
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1985 CJ7 
 
Join Date: Jan 2007
Location: Houston, TX
Posts: 2,042
I too get 20 pretty consistently with a corrected speedo gear on 33's/3.31 with my 5.3/4L60E. Thats cruising steady at 60-65mph. If i go much over that the mileage drops quickly and I have keep it out of overdrive to have the RPM's in the correct range.

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1985 CJ7 Project
Phase One : 5.3L Vortec/4L60E, Moser axles for AMC20, Twin Stick'd Dana300 - Completed
Phase Two: Bedliner, Rollcage, Seats, BESRK Rear Bumper w/ tire swing, Soft Top, and a few other goodies - Mostly Complete
Phase Three: Waggy 44 front, Scout D44 Rear, 4.56's, ARB's (F/R) SOA with YJ Springs, 35x12.50x15 BFG MT - Not Even Close to beginning

Also a mostly rust-free 1970 Scout 800A That I'll get to start working on someday...

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Chrome won't get you home...BUT Rattle Can Black may just get you back"
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Unread 05-20-2013, 03:32 PM   #17
skizriz
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1978 CJ7 
 
Join Date: Jun 2011
Location: , Pa
Posts: 3,563
I get 13-14 in my F150 Supercrew. I DD (weather permitting) my CJ on 35s and 3.54 gears, 200+ miles a week to work topless ,because it gets a lot better gas mileage. I never actually figured out the numbers, but my wallet tells me it's way better.

4.2, MC2100, Team Rush, 35 Grabbers and 3.54 gears, 3 speed automatic. That's a 50/50 mix of city and highway, cruising at 60 mph at 2,100 rpm.
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78 CJ7 258 TH400/Dana18 SOA/stock YJ springs 35" General Grabbers.
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