BRKLYNZ28

i have a jeep cj7 that i installed a lt1 5.7 auto from a roadmaster that i use to tow around trailers and a use as daily driver.. The weird thing is i can get 11 mpg just driving to work and were ever but when i drive with a large trailer i get 20mpg... at the swap meets we all try to figure out what gives as it been doing that for the 10 years i have done the conversion.. gearing is 4.56 with built 4l60e..there are no overdrive problems or anything. all i can think is driving habbit ... what do you think?

SilverSS07

iTrader: (1)

That doesn't really make any sense. 9 mpg better while towing?

BRKLYNZ28

i know thats why i ask... i use the gas receipts so its right... we where also thinking from the weight it brings down the rpms and thats why i get better mpg..

lt1slowz28

Not something I would complain about but maybe you have some sort of perpetual motion device.

96capricemgr

iTrader: (1)

Almost has to be something screwedup in the tuning combined with driving habits.

gcouse7

iTrader: (16)

I would weld that trailer to the car.

lt11994

Could it be that when you're towing youre driving further and less inclined to be a lead foot? Example: all highway driving vs. Around town everyday stuff?

BRKLYNZ28

yea i was going to weld the trailer on but finding parking would be a killer in nyc lol... im not complaining just wanted to share this crazy thing that happens..

azmarkus

Expect a phone call from an oil company representative, the Department of Energy, and the ghost of Billy Mays.

DisasterFormula

iTrader: (1)

How about some details on your driving habits. How you accelerate, cruising speed, etc., for each situation.

Adam1203

iTrader: (5)

Could the shift points be off? maybe it is shifting to early when hooked to a trailer it drags the shifts out longer.

How does that tow with that short wheel base?

sweetbmxrider

iTrader: (13)

Are you comparing all city driving to work to towing with a trailer on the highway?