Club Chapters => Mid West => Topic started by: duffinatur on October 13, 2019, 03:19:44 PM

Title: rear gear swap in NW Indiana
Post by: duffinatur on October 13, 2019, 03:19:44 PM
Can anyone recommend a shop near South Bend, IN that is a trustworthy place to do a
rear gear change? Just not something I want to attempt this year.

Lotsa general repair shops around here, but would like a recommendation.

2.73 to a 3.73 on a 10 bolt 8.5"
Thanks,
Duff
Title: Re: rear gear swap in NW Indiana
Post by: b_hill_86 on October 13, 2019, 10:33:54 PM
Don’t have an answer (though we’re not that far from each other and I have at least one local to me in Toledo, OH area) but out of curiosity what trans do you have that you’re going to a 3.73?
Title: Re: rear gear swap in NW Indiana
Post by: duffinatur on October 13, 2019, 11:46:17 PM
I have the 4L60E.  It's never been that right with the 2.73's. I could still decide on the 3.42's.
Title: Re: rear gear swap in NW Indiana
Post by: Updated71 on October 14, 2019, 05:26:44 AM
It's been some years since they did this for me, but I used Joe Rhyne Racing in Gary. 
Title: Re: rear gear swap in NW Indiana
Post by: FormTA on October 14, 2019, 06:10:26 AM
I have the 4L60E.  It's never been that right with the 2.73's. I could still decide on the 3.42's.

Interesting.  The 1998 trans am I pulled my LS from had a 4L60E and had stock 2.73s. My 79 also has 2.73s. I hope once I get mine on the road I don't have any issues. What do you mean by, it's never been right?
Title: Re: rear gear swap in NW Indiana
Post by: duffinatur on October 15, 2019, 12:19:04 AM
Form,
I'll walk that back. My previous tune had a lot to do with it (shift points, poor A/F mixture). I had the car out yesterday
and drove around a little and it wasn't searching for the right gear like it was before getting the proper tune. 
Previously, in 4th on the highway, it was always either idling way too low or jumping down to 3rd with the barest of throttle movement... even cruising at higher speeds. And at W/O/T I was nearly 80-90mph before 3rd would kick in at too high of revs.
I had a lot going on that was tune related.
 
AND
I'm pretty happy with it as of today.
I still may look at a gear change, but not for drive-ability. Probably just different performance.


     
Title: Re: rear gear swap in NW Indiana
Post by: FormTA on October 15, 2019, 06:10:39 AM
Got ya. My engine, trans, ecm, and most of the wiring are all from the same car. Basically I plucked everything as a unit and dropped it into my car. I did have Ryann (Reyguy on here) tune out the VATS and some of the unused features like AC but everything else is stock 1998. You car looks great and hopefully you get to enjoy it now!
Title: Re: rear gear swap in NW Indiana
Post by: jonathonar89 on October 15, 2019, 07:42:37 AM
Myself and a few others have used an individual in Hebron, IL if you’re willing to drive north of Chicago.  Old Vietnam vet who specializes in rear ends.  He also races Oldsmobile’s.  PM me if interested.
Title: Re: rear gear swap in NW Indiana
Post by: another10th on October 18, 2019, 06:09:34 PM
Moser Engineering is in Portland, Indiana. A bit under three hours from South Bend.