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83 CJ5. 258 hwy mpg #1577095
02/11/14 02:02 AM
02/11/14 02:02 AM
Joined: Oct 2003
Posts: 3,698
NE Oklahoma
V
Von Offline OP
master
Von  Offline OP
master
V

Joined: Oct 2003
Posts: 3,698
NE Oklahoma
Wondering what the real world MPG would be for a stone stock 83 CJ5. Stock size tires, gears, etc.

Looking for MPG in the 55-60MPH range.

Thanks


72 RR, Pump gas 440, 452s, 3800 lbs, Corked, ET Radials,. 11.33@117.72. Same car, bone stock 346s, 9.5 comp, baby solid. 12.24@110.
Re: 83 CJ5. 258 hwy mpg [Re: Von] #1577096
02/11/14 02:39 AM
02/11/14 02:39 AM
Joined: Jan 2007
Posts: 1,395
LAKE TEXOMA
oldman Offline
pro stock
oldman  Offline
pro stock

Joined: Jan 2007
Posts: 1,395
LAKE TEXOMA
Hey DRL will you send new T shirt to the OLDMAN. and by the way you will be looking at 21-23 MPG what I got with 3 speed manual trans.
your friend
OLDMAN

Re: 83 CJ5. 258 hwy mpg [Re: Von] #1577097
02/11/14 10:27 AM
02/11/14 10:27 AM
Joined: Jan 2003
Posts: 18,424
UPPER MICHIGAN, MARQUETTE COUN...
N
NITROUSN Offline
I Live Here
NITROUSN  Offline
I Live Here
N

Joined: Jan 2003
Posts: 18,424
UPPER MICHIGAN, MARQUETTE COUN...
16 to 18.

Re: 83 CJ5. 258 hwy mpg [Re: NITROUSN] #1577098
02/11/14 12:40 PM
02/11/14 12:40 PM
Joined: Jan 2003
Posts: 43,575
Round Lake Beach, Illinoisy
Rhinodart Offline
Rhinotruck
Rhinodart  Offline
Rhinotruck

Joined: Jan 2003
Posts: 43,575
Round Lake Beach, Illinoisy
if you are lucky, no way it will EVER get 20mpg.


The funny thing about science is that if you change one miniscule parameter you change the entire outcome to the way you want it.

JB Rhinehart, Realist

A-Body's RULE!
Re: 83 CJ5. 258 hwy mpg [Re: Rhinodart] #1577099
02/11/14 01:46 PM
02/11/14 01:46 PM
Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
DaytonaTurbo Offline
Too Many Posts
DaytonaTurbo  Offline
Too Many Posts

Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
16-18 if you're lucky. I've got an 88 yj with the 258. worse if you do a lift and huge tires. I put an aftermarket carb and dist on mine. helped a ton with driveability, didn't help much with mpg.

Re: 83 CJ5. 258 hwy mpg [Re: DaytonaTurbo] #1577100
02/11/14 05:18 PM
02/11/14 05:18 PM
Joined: Jan 2003
Posts: 15,551
Norwich CT USA
moparts Offline
I Live Here
moparts  Offline
I Live Here

Joined: Jan 2003
Posts: 15,551
Norwich CT USA
On Mine with the aftermarket carb 16-18 mpg overall

But with the 4:10 gears and 33" it does NOT like the highway.
Really got to push it to do 65 mph. Likes the 40-55 range a lot better


Tom ,

2011 Ram 3500 C&C Diesel
2009 Challenger R/T
1971 Challenger Conv. 511/4 speed
1970 Challenger R/T 503/727








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