Changing ring and pinion

Asked by May 05, 2016 at 08:51 PM about the 1986 Oldsmobile Cutlass Supreme

Question type: Car Customization

Changing it from a 250 gear to a 373 been tring to
get it to mesh right. Sloppy!!! Do I need a new  
Carrier ????

8 Answers

81,915

The gears need to be set up properly for a rear end. I would suggest looking on you tube to see how it is done.

I have and I have done this before. I ordered 373's online and install them and the ring gear is not even close to the pinion gear. Ordered a set from town here 343's same problem. Does the carrier have to be changed when you up it to a higher gear like those.

81,915

I don't know, just thought the info would be on you tube, sorry.

Thanks for your time

113,615

Yes, that is way too much of a jump to use the setup from the 250's. Check with you gear vendor to get the right one for your gearing, odd they didn't suggest that when you went to buy the set.

Thank you I'll get this figured out yet.

113,615

One things for sure, you will notice a big improvement in take off speed, but your mileage is going to suffer.

30,085

OH BROTHER....

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