Dodge Ram Cummins Diesels and Mopar banner

1 - 4 of 4 Posts

·
Registered
Joined
·
53 Posts
Discussion Starter · #1 ·
Hi all,


In addition to swapping in a 440, I'm upgrading the rearend to an 8 3/4 from an 8 1/4. The distance from the axleshaft centerline to center of the u joint is .66" longer on the 8 3/4 than on the 8 1/4. So, if not shortened, the driveshaft will stick .66" further into the rear of the transmission when I do the rearend swap. Is this likely to cause a problem, or can I just leave the driveshaft stock?



Neil
 

·
Registered
Joined
·
5,085 Posts
if it is only 660 thousandths of an inch your looking roughly half inch in the shaft. are you using slip yoke and lift or no. if you have a lift at all you will be fine no questions asked. if stock then i would just push it all the way in and see how much room you have until it bottoms out. you need to figure in how much room you need for jounce of the suspension. im thinking your gonna be fine with waht you have. see what other replies you get say. see ya

jamie
 

·
Registered
Joined
·
53 Posts
Discussion Starter · #3 ·
mrpeal said:
if it is only 660 thousandths of an inch your looking roughly half inch in the shaft. are you using slip yoke and lift or no. if you have a lift at all you will be fine no questions asked. if stock then i would just push it all the way in and see how much room you have until it bottoms out. you need to figure in how much room you need for jounce of the suspension. im thinking your gonna be fine with waht you have. see what other replies you get say. see ya

jamie
It's stone stock height-wise.
 

·
Registered
Joined
·
5,085 Posts
i would just unbolt and stick all the way in the trans end and see how much you have to pull out to get back to the carrier. if it is more than 2 inches i think you will be fine. is it 2 or 4 wheel drive. you noted a slip yoke and most 4s dont have slip yoke in the trans. more info please. lol

seeya

jamie
 
1 - 4 of 4 Posts
Top