3.91 for a 741 case

[v6spitfire]

Anybody aware who makes a 3.91 ring and pinion for a Mopar 741 case?

[signsbyesa]

there are alot of dealers out there, but i like the small guy,
this guy was used in several hotrod mags. and i used him for
parts thru the yrs and he is very knowledgeable for any rear,
his slogan is"happyness is a tight posi" and his axels are called
"kick ass axels" he also has tax return specials a true american
good luck
http://www.tomsdifferentials.com/catalog.asp?pg=113

[TheYellaBrick]

signs, Good post on Tom's Diffs. He's in Idaho and not far away. :D :D

[v6spitfire]

I'd have no issues with supporting Toms, but they only sell ring and pinions for the 742 or 489 case. My case is the early 657 / 741 case.

[TheYellaBrick]

It's going to be very hard to find any aftermarket 3.91's for that early 8 3/4 case. Possibly a factory pickup rear end would have that shorter gear but it'll be used and weaker.
Be better to scare up a 742/489 punkin'.

[TheYellaBrick]

Randy's has 3.73's but no shorter.

http://www.ringpinion.com/PartsList.aspx?SearchMode=Diff&TypeID=2&Type=Chrysler&DiffID=8&DiffName=Chrysler+8.75+(89%2c41%2c42)&CatID=10&CatName=Rings+%26+Pinions&CatType=Sub-Differential

DTS is same same;

http://www.drivetrainspecialists.com/categories/chrysler/chry-875-741/randp-1.html