Notices
Stock JK Tech Bulletin board forum regarding issues with OE (original equipment) components of the Jeep JK Wrangler (Rubicon, Sahara, Unlimited and X) such as factory suspension parts, engine, transmission, body parts, interior fixtures and the on-board computer.

Stock 3.73 and 4.10 rpm question...

Thread Tools
 
Old 04-30-2012, 10:48 AM
  #1  
JK Enthusiast
Thread Starter
 
ThwopKing's Avatar
 
Join Date: Mar 2012
Location: Bunker Hill, WV
Posts: 318
Likes: 0
Received 0 Likes on 0 Posts
Default Stock 3.73 and 4.10 rpm question...

Hey folks just wondering what you guys are pulling for highway rpm with the new 3.6,automatic trans and 33 or 34in tires....at say 70 to 75mph. Just trying to get idea of where I would be vs the stock 3.21s.
Old 04-30-2012, 02:22 PM
  #2  
JK Newbie
 
pancake's Avatar
 
Join Date: Mar 2012
Location: Reno, NV
Posts: 26
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by ThwopKing
Hey folks just wondering what you guys are pulling for highway rpm with the new 3.6,automatic trans and 33 or 34in tires....at say 70 to 75mph. Just trying to get idea of where I would be vs the stock 3.21s.
I have 3.6 Auto, 3.73 and my tires measure out to 35.2"

Doing about 2050/2100 at 70mph. Looking to get 4.56s soon, but it's not too bad. With the stock 16" wheels (I think it was a 255 70 tire?) I was closer to 2500 which felt pretty peppy.

Here's the gearing chart from another thread-

Old 05-01-2012, 10:10 AM
  #3  
JK Enthusiast
Thread Starter
 
ThwopKing's Avatar
 
Join Date: Mar 2012
Location: Bunker Hill, WV
Posts: 318
Likes: 0
Received 0 Likes on 0 Posts
Default

With the stock 255/70/18s I'm right about 2k rpm at 70mph and about 2100-2150 at 75mph. So I would put me way to low on according to that chart if I ran 34s. Guess I will be saving up for 4.10s.....crap! Lol



Quick Reply: Stock 3.73 and 4.10 rpm question...



All times are GMT -8. The time now is 06:55 PM.