gas mileage

what is good mpg for a 75 cj5 with a 258? what do u guys get with yours

 

mmmmm, single digits but it is only really ever driven on the trails in low gear at slow speed.

 

i had a cj7 (1985) that got 18...it had a howell TBI kit on it and 31's with the stock 2.73 gears

 

My '75 CJ-6 got around 14 IIRC. This was a brand new one though, and had a T-14 and 3.73 axles. Mostly CA freeway driving.

 

I haven't had my 79 CJ5 with the 258 for long but the little city and country driving I have done, I have been getting around 12 to 14mpg.

 

12-14 around town in mine

 

wow mine gets 19 on the highway

 

Wow, 19, that's amazing.

I get 12 in town. Never driven it far enough to check highway mileage.

High5

 

mine gets 13 in town and 16 highway. 258 t14 3.73 31s
hopefuly that will get better with my new tbi

 

I have a 258 single barrel carb with a 3 speed manual. I seem to be getting right at 19-20mpg Driving though is normally 45-55 minimal stopping, so I'd say that's as high as your going to see it.

 

I'm pushing about 10 city and 15 highway...darn V8...but you have GOT to love the sound!

 

I know the feeling, my other Jeep (98 ZJ 5.2L) gets 12.5MPG average. So I see a gain of almost 50% when i drive my CJ

 

My 304 powered 74 CJ5 gets 20mpg on the highway driving 55. Get it in town though and forget it. It still has the 3.73 gears in the rear with 35 inch tires. I am sure it will drop a bit when I go to the 4.56 gears. As it sits now at 55 I am turning 2000 RPM. Comfortable cruise right now is about 70 MPH but the gas mileage suffers. Over that the vibration gets pretty bad.

 

Is your speedometer correct? Bigger tires will change the final drive ratio, make it read incorrectly, thus your odometer will be incorrect. Can make a dramatic difference in calculating mileage.

 

about 10-14 mpg, includes fairly frequent trail riding.

258/np435/3.73/34's/weber k550-14

 

I use GPS for speedo/odometer... I have been really struggling with the whole speedometer thing.

 

And how is the GPS working out for you?R):hurrican:

 

Mine is an 80 CJ-5 with DUI HEI, stock BBD, 4.10's with 32 BFG MT's. Got my speedo corected then took gas mileage. Surprised that I am getting 16-17 MPG HWY.

 

I get about 7 city and highway.

Oh well I guess thats what I get for 33's, 4.11s and a 351W.