Rear Gear Swap
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Joined: Feb 2002
Posts: 77
Likes: 0
From: Lakeville MN
Re: Rear Gear Swap (DarkBlue82)
Great question that I have been wanting to ask as well. Looking forward to hearing from someone that has been there & done that. The people I have talked with say its not a no brainer but do-able. Sounds like shimming the gears to get the correct mesh is the magic.
Melting Slicks
Joined: Oct 1999
Posts: 2,581
Likes: 14
From: Tolar Texas
Re: Rear Gear Swap (DarkBlue82)
How hard to change over from 2.72 to 3.55 rear end gears on an 82.
What would be the cost tohave it done at a shop??
Thanks,
Bob :smash:
What would be the cost tohave it done at a shop??
Thanks,
Bob :smash:
http://forums.corvetteforum.com/zerothread?id=193247
Le Mans Master
Joined: Apr 1999
Posts: 6,134
Likes: 46
From: Raleigh North Carolina
Re: Rear Gear Swap (terryrudy)
I agree with Terry... Great Post.
Question...
Did you (Miker) re-use the original ring gear bolts, or did you get new ones?
GM says not to use the old bolts.... a warranty concern, perhaps?
I'm leaning toward re-using the old bolts.
Question...
Did you (Miker) re-use the original ring gear bolts, or did you get new ones?
GM says not to use the old bolts.... a warranty concern, perhaps?
I'm leaning toward re-using the old bolts.
Melting Slicks
Joined: Oct 1999
Posts: 2,581
Likes: 14
From: Tolar Texas
Re: Rear Gear Swap (Tom454)
Thanks for the compliments guys! :cheers: That is one of those jobs that I have always wanted to try. I made that post in hopes that someone would find it via archive search and benefit from it. Makes the posting effort very worthwhile knowing that fellow forum members are finding it to be useful. It's not often that I can supply a significant contribution but I'm happy to do so when ever I can.
Before I started that job, norvalwilhelm assured me that he would be available for online tech assistance if I were to need it. Knowing that I had "back-up" certainly helped my confidence.
Tom454, I ended up with TWO complete sets of ring gear bolts. I have NO use for the extras. You are welcomed to have them if you want (free). E-mail your address to me and I will send them. :cheers:
Before I started that job, norvalwilhelm assured me that he would be available for online tech assistance if I were to need it. Knowing that I had "back-up" certainly helped my confidence.
Tom454, I ended up with TWO complete sets of ring gear bolts. I have NO use for the extras. You are welcomed to have them if you want (free). E-mail your address to me and I will send them. :cheers:
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Brett Foote
Instructor
Joined: Nov 2000
Posts: 108
Likes: 0
From: HONOLULU HAWAII
Re: Rear Gear Swap (gtr1999)
I was going to buy the whole pumpkin from Mid America for $799.00 with $300.00 core charge....Looks like you guys have found a cheaper way of replacing gear ratios....Wish I was that talented...
Thread Starter
Intermediate
Joined: Apr 2000
Posts: 44
Likes: 0
From: Stonybrook, NY USA
Re: Rear Gear Swap (DarkBlue82)
Thanks for the great posts. Looks like this is do-able but would be best as a winter project. Really great post by MIKER. From what I can tell it would cost at least 700-800 bucks for the labor if I had a shop do it, so it will have to wait until next winter.
Also with the low 700r4 first gear and the 2.72 rear how close is the total gear ratio (in 1st) to a th400 with a 3.73 (in 1st). I'm sure someone out there has looked at these numbers......... :crazy:
Also with the low 700r4 first gear and the 2.72 rear how close is the total gear ratio (in 1st) to a th400 with a 3.73 (in 1st). I'm sure someone out there has looked at these numbers......... :crazy:
