RE: Rear Axle Changes

["Gary H." <62to65mopar@xxxxxxxxxxx>]

===========================================================
Graduate in less than 13 months with AIU?s Online virtual 
campus. Classrooms and student service as close as your 
computer. Highly accredited, study anytime ? anywhere.
caaccM2b7yoMza/ AIU
===========================================================



Good points Earl. 

All depends on the HP/torque available and deliverable to the rear via 
rubber, the drivetrain components, the "stickyness" of the asphalt and 
the shoe size of the driver. :) 

So is this accurate:

* the "strength" of tapered axles used on a stock application is likely 
okay for routine driver use;
*  T-axles "strength" decreases as the Mopar is transformed into a 15 to 
13 second "street machine" but still likely okay for the majority of the 
time;
*  T-axles "strength" crosses the threshold of beyond-usability when the 
12- to 10 second 1/4 mile range is the routine goal for the Mopar?

Or, in other words, the standard applies: the faster you go the more 
stuff you'll probably break. :)  

Gary H.

 


Earl Helm wrote:
> 
> My 2 cents:
> 
> A. Back in the day the tires, track, converters, and HP was not what
> it is today. I raced "Back in the Day" - also today - and the tapered
> axles did not hold up for the guys going fast. It was a constant
> problem.
> A tapered axel is a poor choice. That is why you will not see them at
> the track today. An 8.75 rear with all the good stuff - MW 35 spline
> axels - Spool - Billet caps - Billet Yoke - will break the gear once
> a year if your running hard - mid to low 10's - more if your running
> a trans break. Do the math - go to the Moser web site, and use
> their calculator.
> 
> B. Don knows how to drive his car. He will break his axel, and ring
> and pinion if he flogs it all the time. If it is for casual use on >the 
> street, you might get away with it for awhile.
> 
> C. Yes, all of the Pigs interchange.
> 
> Earl
> 
> 
> My 2 cents: 
> 
> A. The 8.75 was strong enough for the racers of the day back in the 
> 1960's. Granted, the tire technology was less "sticky" then, but if you 
> are using the car as a street machine unlikely you'll have such a 
> HP/tire combo to pull the front end up in the air and snap the 8.75. 
> 
> I *think* Don D's 1963 Dodge 440 with a 426 uses a tapered version of 
> the 741 8.75 and 391 gears with 29 inch tall tires without problem.

<snip>

===========================================================
Looking for a Promotional or Marketing Gift? Discover 
Crazy Aaron's Thinking Putty in grown up handfuls. It's 
the creativity unleashing, mood enhancing desk toy 
customized with your corporate image!
caaceBcb7yoMzf/ Crazy Aaron Enterprises
===========================================================

----
Please address private mail -- mail of interest to only one person -- directly to that person.  I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic.  Thanks!

'62 to '65 Mopar Clubhouse Discussion Guidelines:
http://www.1962to1965mopar.ornocar.org/mletiq.html. 



b7yoMz.