Re: 8 3/4 Diff.

[Gary Pavlovich <glpavlovich@xxxxxxx>]

Gear ratios and final drive RPM is obviously a personal taste kind of 
tolerance.  My 12 second, mild 340 powered Dart GT, turns approx. 3600rpm 
when I cruise around 55mph; short 25" BFG's, 3.91 gears, low gear set in 
trans, & 3500stall 10" convertor.  I don't mind the RPM as it is in my 
makeup since this was the norm back "in the day."

I am not opposed to reducing the RPM's at cruising speed but I will not pay 
the "overdrive" price since it is not cost-effective or necessary for the 
weekend warrior duty this car receives.

My Stroker Poly vehicle will be running 235/60-15 Drag Radials, 3.73 gears, 
low gear set in trans, and a 3800stall 9.5" convertor.
I will be turning approx. 3200rpm @ 66mph.  If I were to go on extended 
freeway cruise, I intend to use a 255/70-15 (28.9" tall) tire for approx. 
2800rpm @ 65mph.

Gary Pavlovich
----- Original Message ----- 
From: "Joey" <jake4@xxxxxxxxxx>
To: <1962to1965mopars@xxxxxxxxxx>
Sent: Saturday, October 16, 2010 12:42 PM
Subject: Re: 8 3/4 Diff.


> either 3:91 or 4:11 would work depending on how far you drive to the track 
> and what your threshold for economic pain is for gas bills. I had 4:10's 
> in my small block 4-speed Duster a couple of years ago and a 60 mile round 
> trip cost about $60 but...that car did fly, I sure miss it. You might try 
> contacting Dan Dvorak in Florida, I thought I had seen recently where 
> someone was advertising 3:73's for the 8 3/4 rear. Good Luck!, either way, 
> it will be fun .
> Joey
> ----- Original Message ----- 
> From: "Jim Rowland" <dodge440@xxxxxxx>
> To: <1962to1965mopars@xxxxxxxxxx>
> Sent: Saturday, October 16, 2010 3:33 PM
> Subject: 8 3/4 Diff.
>
>
> > I have purchased a 489 Casing, 8 3/4, that I am going to have updated 
> > with a Tru Lock.
> >
> > I have contacted the usual places, Moser, DTS and Hensel's Garage in 
> > Ohio. Has anyone ever had any work done by Hensel's Garage? He states  he 
> > caters toward Mopars.
> >
> > I originally going to go with a 3:55/1 for cruising and racing.  Then  I 
> > got to thinking that for all that money maybe I ought to have it set  up 
> > for racing, I would drive to the track, like a 3:90 or 4:11. Then  when 
> > going to long trips switch back to the original 3;23.
> >
> > Any thoughts on my plans? I currently have a warmed over 68 440 TNT 
> > engine with an automatic.
> >
> > Jim
> >
> > 1965 Coronet 500, 440CI
> >
> >
> > ----
> > 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!
> >
> > 1962 to 1965 Mopar Clubhouse Discussion Guidelines:
> > http://www.1962to1965mopar.ornocar.org/mletiq.html and
>
>
> ----
> 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!
>
> 1962 to 1965 Mopar Clubhouse Discussion Guidelines:
> http://www.1962to1965mopar.ornocar.org/mletiq.html and 


----
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!

1962 to 1965 Mopar Clubhouse Discussion Guidelines:
http://www.1962to1965mopar.ornocar.org/mletiq.html and http://www.1962to1965mopar.ornocar.com/general_disclaimer.html.