effect on mileage-gear change? - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > General Technical Discussions > Engines & Drivetrain > effect on mileage-gear change?

Introducing MONSTALINER™ UV Permanent DIY Roll On Bed LineTJ 5.25" Speaker Adapters - NalinMFGJK Vent Covers - NalinMFG

Reply
Unread 05-01-2012, 07:29 AM   #1
JeepLawyer
Registered User
1979 CJ7 
 
Join Date: Mar 2002
Location: near Conway, Arkansas
Posts: 37
effect on mileage-gear change?

I have a 1979 CJ-7 with a 304-V8, and I am running KM2s which is a 35" on a 16" wheel, body lift 2", suspension lift 4" -- with standard gears right now. I am happy with the 9 mpg or so I get but ask:



If I have my shop change out the gears, how does this affect mileage, if at all? I think I understand that the engine runs at low rpms when you are running a larger tire and was just curious if there is a big change when you change gears which as I understand it will get the jeep back to his normal factory power after a gear swap to account for the larger tires.



Robert

JeepLawyer is offline   Reply With Quote
Unread 05-01-2012, 10:00 AM   #2
MoparXJ
Registered User
1993 XJ Cherokee 
 
Join Date: Mar 2012
Location: El Paso, Texas
Posts: 44
Your gas mileage will improve if you get taller gears. Your engine doesn't have to work as hard to get those bigger tires moving.
MoparXJ is offline   Reply With Quote
Reply
Thread Tools


Suggested Threads





Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.