Re: [oletrucks] Rear end ratio

[Roger.Gleason@uconn.edu]

 I believe you have to turn the wheel it twice unless its a posi unit. We
do this quite regularly for our racing enterprises and have done it
recently about four times about a month ago.

Roger Gleason
University of Connecticut
Construction Engineer
31 LeDoyt Road
Storrs, Connecticut 06269-3038
Phone 860-486-3064
Fax 860-486-3117


                                                                                
                                                         
                      Wayne Osborne                                             
                                                         
                      <wayne@chevytrucks.        To:       "Antonio R. 
Tijerino" <antonio@tijerino.net>, <Spinningroach@aol.com>,        
                      org>                        <daveshier@hotmail.com>, 
<oletrucks@autox.team.net>                                    
                      Sent by:                   cc:                            
                                                         
                      owner-oletrucks@aut        Subject:  Re: [oletrucks] Rear 
end ratio                                                
                      ox.team.net                                               
                                                         
                                                                                
                                                         
                                                                                
                                                         
                      11/04/2003 01:50 PM                                       
                                                         
                      Please respond to                                         
                                                         
                      Wayne Osborne                                             
                                                         
                                                                                
                                                         
                                                                                
                                                         




Jack up both sides of the rear of the truck, place a tape or chalk mark on
the 12 oclock position of the tire. Youll also note the the position of the
drive shaft, place a reference mark, or visually note a location that you
can count the revolutions of it. Turn the tire one full revolution and
count how may times the drive shaft rotates. Although you quickly be able
to distinquish between a 4:11 (one tire revolution equal 4.11 turns of the
shaft) and say a 2:73. But be hard to tell between a more closer ration.
Best way is to remove the cover, count the pinion and ring gear teeth and
divide the 2. There is generally a code stamped on it that can be run to
indicate the ratio---of couse that would be the original gear set..
Good luck   --wayne


At 07:07 AM 11/4/03 -0700, Antonio R. Tijerino wrote:
>A while back someone suggested that in order to calculate the rear end
ratio
>you raise the truck on hack stands and then turn the wheel and count the
>number of turns on the driveline. How does this work, I have a friend that
>is trying to do this and I can't remember exactly how this done.
>
>Thanks,
>
>Antonio
>oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959