Diff ?
Thread Starter
Burning Brakes
Joined: Feb 2016
Posts: 914
Likes: 182
From: Reidsville North Carolina
Diff ?
2001 Vert / 273 Diff
Trying to go to a 373 from a 273
The guy that is going to do it says he is having trouble getting the ring and pinion
the reason I have been given is that with this virus stuff the manufacturer has slowed production but is working on it
with the research I have done myself (and found nothing definitive) I am assuming here, and am asking am I right?
I'm thinking the 273 is a throw away diff
there are numerous things you can do with a 315 or 342 but absolutely nothing out there for a 273
everything I have seen says 315 or better, I have found ring and pinion's but none for a 273
am I going to have to bite the bullet here and just buy a whole new or rebuilt diff
the ones I have seen have a core charge but do not want the 273 diff as a core
am I in the ball park with my thinking or is the 273 diff upgradeable
Trying to go to a 373 from a 273
The guy that is going to do it says he is having trouble getting the ring and pinion
the reason I have been given is that with this virus stuff the manufacturer has slowed production but is working on it
with the research I have done myself (and found nothing definitive) I am assuming here, and am asking am I right?
I'm thinking the 273 is a throw away diff
there are numerous things you can do with a 315 or 342 but absolutely nothing out there for a 273
everything I have seen says 315 or better, I have found ring and pinion's but none for a 273
am I going to have to bite the bullet here and just buy a whole new or rebuilt diff
the ones I have seen have a core charge but do not want the 273 diff as a core
am I in the ball park with my thinking or is the 273 diff upgradeable
Burning Brakes
Joined: Oct 2011
Posts: 1,190
Likes: 1,105
From: Maricopa, AZ
2026 Corvette of the Year Finalist - Modified
2025 C6 of the Year Winner - Modified
2025 C8 Stingray of the Year Finalist - Unmodified
St. Jude Donor '12-'13
You cannot put any 3 series gear in a 2 series diff.
You're going to have the change the entire unit to achieve what you're trying to do.
You're going to have the change the entire unit to achieve what you're trying to do.
Uneducated autodidact
Joined: Feb 2001
Posts: 5,407
Likes: 249
From: West of the Sabine, Texas
Thread Starter
Burning Brakes
Joined: Feb 2016
Posts: 914
Likes: 182
From: Reidsville North Carolina
I haven't seen anything that has told me that definitively, but from all the info it is what I assumed
I would think the place that is going to do the work would know that (supposed to be one of the best in the state)
although it really hasn't been discussed whither he was going to use my diff or rebuild another
Uneducated autodidact
Joined: Feb 2001
Posts: 5,407
Likes: 249
From: West of the Sabine, Texas
You might consider finding a take out 3.42 diff, it would bolt in and it's quite an improvement behind an automatic. They can be found for less money than finding a core and building one. I have done both and a 3.42 makes an automatic a lot more fun for a lot less money. Good luck finding what you want.
Thread Starter
Burning Brakes
Joined: Feb 2016
Posts: 914
Likes: 182
From: Reidsville North Carolina
Drifting
Joined: Mar 2015
Posts: 1,420
Likes: 302
From: CSRA, SC
If you get a take out diff definitely have it rebuilt while it is out with some more robust belville washers that won't break. Chances are any take out diff you find is probably either already failed or on the way out. It would suck to put it in and take it right back out. Ask me how I know!
Burning Brakes
Joined: Oct 2011
Posts: 1,190
Likes: 1,105
From: Maricopa, AZ
2026 Corvette of the Year Finalist - Modified
2025 C6 of the Year Winner - Modified
2025 C8 Stingray of the Year Finalist - Unmodified
St. Jude Donor '12-'13
If you get a take out diff definitely have it rebuilt while it is out with some more robust belville washers that won't break. Chances are any take out diff you find is probably either already failed or on the way out. It would suck to put it in and take it right back out. Ask me how I know!
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Cruising
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Is there anywhere to find a clear explanation of the difference between series 2 and series 3 diffs?
There is a lot of information about the C4 diffs. They are either D36 or D44 and is well covered.
But for C5 and C6 diffs it is really hard to find a source of clear explanation of differences within each type.
Does C5 come with series 2 for 2.73 auto cars and series 3 for 3.15 option auto cars and 3.42 for manual cars plus Z06?
Is the optional 3.15 auto diff a series 2 or series 3?
Then C6 is an issue in 2005 due to carryover from C5 and wheelbase change.
How are the C6 different from C5 for standard models and for Z06 models, etc ?
There is a lot of information about the C4 diffs. They are either D36 or D44 and is well covered.
But for C5 and C6 diffs it is really hard to find a source of clear explanation of differences within each type.
Does C5 come with series 2 for 2.73 auto cars and series 3 for 3.15 option auto cars and 3.42 for manual cars plus Z06?
Is the optional 3.15 auto diff a series 2 or series 3?
Then C6 is an issue in 2005 due to carryover from C5 and wheelbase change.
How are the C6 different from C5 for standard models and for Z06 models, etc ?
Last edited by slarsen47; Jun 17, 2020 at 12:58 PM.
