New gears in the rear

[camtra]

Greetings, I just got my rear end back with new gears. Just put 3:55 gears and it will be with a 440 on a '69 Charger. What oil or lube would y'all recommend to fill her with?

 

[PurpleBeeper]

Your owner's manual should say.... I think Mopar recommended something like 75W/90'ish, but I tend to run the 75W/140'ish thicker stuff (for no good reason, just what I've run). The main thing is that if you have a "posi" rear end, you need to make sure you either A) add a little bottle of posi-additive or B) buy gear lube that already has it in there (some do).

 

[1967coronet440]

Sure grip? Dana? 8 3/4? Clutch style? Open diff? The gear oil itself is generally the same but different additives

 

[66Satellite47]

Depends on what differential you have. With a clutch type limited slip, use the 80-90W gear oil with friction additive.

 

[Yatzee]

Greetings, I just got my rear end back with new gears. Just put 3:55 gears and it will be with a 440 on a '69 Charger. What oil or lube would y'all recommend to fill her with?

Always use the recommended oil by the gear manufacturer or OE Chrysler brand. Don't forget the hellishly expensive additive if you have a posi.

 

[beanhead]

If a shop did it, they should give you a recommendation for what they built...in my clutch-type 8.75 w/3.73 gears, two quarts 85/140 with the small bottle of additive