what are my axel ratios? - Ford Powerstroke Diesel Forum
Non-Powerstroke General Discussion General Discussion for 6.9L and 7.3L IDI (Non-Powerstroke) Engines

Powerstroke.org is the premier Diesel Truck Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 07-23-2009, 02:28 PM
Member
 

Join Date: Jul 2009
Posts: 41
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
what are my axel ratios?

Ok ive been wondering what my ratios are for a long time im just not sure how to identify them. 1986 w/7.3 and 35'' muds. Heres me numbers from the front axle, i couldnt find the rear axle tag.

P308 41 41582
and then there is 141 which is up side down.
when i go to the gas station i can drive in third at about 45-50 at 2200-2300RPMs or shift to fourth and be about 1400-1600RPMs. any help will be very appreciated! thanks, jacob
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2  
Old 07-23-2009, 02:39 PM
COME ON...ONE TIME!!


 

Join Date: Sep 2007
Location: Fletcher, NC
Posts: 16,531
Thanks: 54
Thanked 47 Times in 46 Posts
Feedback Score: 0 reviews
souinds like you have 4.10 gears. I cant really get anyhting from that axle tag,
Reply With Quote Quick reply to this message
  #3  
Old 07-23-2009, 02:42 PM
It'll buff out!

 

Join Date: May 2009
Location: San Diego, Ca
Posts: 360
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Send a message via Yahoo to TuRBoWHiNe
Quote:
Originally Posted by cc.DieselRacer View Post
Ok ive been wondering what my ratios are for a long time im just not sure how to identify them. 1986 w/7.3 and 35'' muds. Heres me numbers from the front axle, i couldnt find the rear axle tag.

P308 41 41582
and then there is 141 which is up side down.
when i go to the gas station i can drive in third at about 45-50 at 2200-2300RPMs or shift to fourth and be about 1400-1600RPMs. any help will be very appreciated! thanks, jacob
Maybe 3.08s?
Reply With Quote Quick reply to this message
  #4  
Old 07-23-2009, 02:50 PM
Member
 

Join Date: Jul 2009
Posts: 41
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
I was thinking that the 308 was it but wasnt sure. where at on the rear axle are the numbers i can go look again and maybe it can be more usefull.
thanks again, jacob
Reply With Quote Quick reply to this message
  #5  
Old 07-23-2009, 02:56 PM
It'll buff out!

 

Join Date: May 2009
Location: San Diego, Ca
Posts: 360
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
Send a message via Yahoo to TuRBoWHiNe
They'd be on a tag on the pumpkin...
Reply With Quote Quick reply to this message
  #6  
Old 07-23-2009, 03:20 PM
COME ON...ONE TIME!!


 

Join Date: Sep 2007
Location: Fletcher, NC
Posts: 16,531
Thanks: 54
Thanked 47 Times in 46 Posts
Feedback Score: 0 reviews
thought 3.08 would be a bit high actually.
Reply With Quote Quick reply to this message
  #7  
Old 07-23-2009, 03:41 PM
Compression Ignition Addict
 

Join Date: Jul 2007
Location: michigan
Posts: 4,243
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
whats your rpm @ 70 mph?
Reply With Quote Quick reply to this message
  #8  
Old 07-23-2009, 04:42 PM
Member
 

Join Date: Jul 2009
Posts: 41
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
sorry for the wait. the fastest ive gone in this pickup is about 60 and i wasnt paying any attention to the rpms. and plus i just got this pickup in feb and been doing random stuff to make it reliable, the motor is kinda tired but i can burn the tires all the way through first and second!
i have one beautiful looking rear axle now, the whole thing is spotless and i cant find a single number! right now the rig is torn to peices since its getting painted so going for a drive is out of the question.

I did find some more numbers on the front tho, these are facing towards the cab unlike the ones i previously posted. The numbers are (upside down) 294 (right side up)B i doubt this helps but its all i have. thanks

Last edited by cc.DieselRacer; 07-23-2009 at 04:46 PM. Reason: f'ed up
Reply With Quote Quick reply to this message
  #9  
Old 07-23-2009, 04:50 PM
Premium Member
 

Join Date: Jan 2007
Location: Florida Panhandle
Posts: 1,710
Thanks: 0
Thanked 1 Time in 1 Post
Feedback Score: 0 reviews
If it is not limited slip....Take and jack up ONE side of the rear axles. Put a chalk mark on the driveshaft and the rear tire that is off the ground. Turn the driveshaft until the rear tire makes exactly 2 revolutions. How many times the driveshaft went around is your gear ratio. Obviously you won't be able to get 3.08 or 4.10 exactly, but if it is just under 4 then it is 3.73 if it is just over 4 then 4.10, etc.

If it is limited slip then just jack it up and do the same thing, but only do it for one rotation of both the rear tires. Same thing applies.

Make sure to chalk the wheels since it will need to be in neutral.

The other option is to take off the cover and count the teeth on the ring gear and pinion gear and then do the math. Divide the ring gear teeth by the pinion gear teeth. That would be your ratio.

-Aaron

Edit: Sometimes you can use the axle code on the door sticker too. Just google for the chart for that. I don't know a specific website.
Reply With Quote Quick reply to this message
  #10  
Old 07-23-2009, 05:11 PM
Shade tree mechanic


 

Join Date: Mar 2008
Location: Lake Tapps, Wa.
Posts: 8,286
Thanks: 0
Thanked 0 Times in 0 Posts
Feedback Score: 1 reviews
Give this a look...

What gears do I have
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -8. The time now is 06:57 PM.


Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.1
Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

vB.Sponsors