Rear End Question

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Jul 28, 2004 | 11:55 PM

aklim

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From: Hartford WI

Rear End Question

What kind of rear end do I have? According to my research I have a Dana 36. I am thinking of switching to a 3.75 ratio set of gears because the current ones I have are way too wussy. Any thoughts?

Jul 28, 2004 | 11:57 PM

wildman378

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If u have a auto it's a dana 36

Jul 29, 2004 | 12:02 AM

aklim

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According to Richmond gear it is a Dana 36. However, their options for a gear set fits 2.73 and numerically lower carrier. So, is that the carrier I have? BTW, I do have an auto

Jul 29, 2004 | 12:14 AM

vader86

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You have a 2-series carrier if you have 2.73's. There is a difference between 2 and 3-series D36 carriers.

I'm sure someone makes a 3.54/3.73 for a 2-series or some way to make it work.

Jul 29, 2004 | 12:15 AM

tobijohn

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Quote:

Originally Posted by aklim

According to Richmond gear it is a Dana 36. However, their options for a gear set fits 2.73 and numerically lower carrier. So, is that the carrier I have? BTW, I do have an auto

What year is the car? is it a coupe or vert? Do you know where to find your RPO codes? If so, look for G44 or G92. If you find either of those and it's a coupe then you have a 3 series carrier with 3.07 gears, if not then it's a 2 series carrier and the the gear ratio would depend on your year. If you have a vert with those RPOs it's not necessarily as cut and dried....

Jul 29, 2004 | 12:22 AM

aklim

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I will have to look out those RPO codes. Where would they be on the car? This is a 91 L 98 Vette Coupe with A4 tranny.

Jul 29, 2004 | 12:24 AM

tobijohn

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Quote:

Originally Posted by aklim

I will have to look out those RPO codes. Where would they be on the car? This is a 91 L 98 Vette Coupe with A4 tranny.

On your year, i think they're located on the underside of the center console lid...

Jul 29, 2004 | 12:25 AM

wildman378

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Does the 3 carrier make any diff in strength of it? Excuse that question if way off lol I'm not real big on diffs.

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Jul 29, 2004 | 01:38 AM

aklim

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From: Hartford WI

Quote:

Originally Posted by wildman378

Does the 3 carrier make any diff in strength of it? Excuse that question if way off lol I'm not real big on diffs.

I doubt it does much but the problem is that if it is a 3 series carrier, you will not get away with puting a set of gears that are for a 2 series carrier.

Jul 29, 2004 | 07:58 AM

#10

conv90

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I'm interested too.
My car is a 90 convertible with a 2.73. I want to upgrade to 3.07 or more...
Buying a ring and pinion is a simple swap?
Thanks and sorry for th intrusion
-Beppe-

Jul 29, 2004 | 09:51 AM

#11

vader86

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Quote:

Originally Posted by wildman378

Does the 3 carrier make any diff in strength of it? Excuse that question if way off lol I'm not real big on diffs.

Not really, the difference is in how the ring & pinion is set.

Jul 29, 2004 | 11:10 AM

#12

tobijohn

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Quote:

Originally Posted by conv90

...Buying a ring and pinion is a simple swap?

No it's not. You need specialized tools and and unless you have those and experience, you're better off leaving it to a professional. Also, while there are aftermarket 3.54/3.73 gear sets available for the 2 series carrier, I don't believe there are 3.07s. The only way to get OEM 3.07s in your diff is to swap out the entire carrier in which case it would probably be cheaper and easier to just buy a used 3 series diff with the 3.07s already in there and swap out your original 2.73 diff....

Last edited by tobijohn; Jul 29, 2004 at 11:20 AM. Reason: spelling

Jul 29, 2004 | 11:16 AM

#13

scorp508

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Quote:

Originally Posted by aklim

Any thoughts?

Stick to street tires.

Jul 29, 2004 | 02:21 PM

#14

aklim

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Even with street tires, I will have to have something better for my motor and modified trans than my G44 (3.07 ratio) in the back

Jul 29, 2004 | 02:22 PM

#15

F1Fan

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Quote:

Originally Posted by conv90

My car is a 90 convertible with a 2.73. I want to upgrade to 3.07 or more...

That small of a change is not worth the money/effort.
If you have an automatic, think about something like a 3.73 instead, and 4.10s if you have a manual.

Edit: I see the "or more..." part now

Last edited by F1Fan; Jul 29, 2004 at 02:25 PM.

Jul 29, 2004 | 02:26 PM

#16

aklim

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For my part, I want a 3.73 gear rear end

Jul 29, 2004 | 02:28 PM

#17

aklim

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From: Hartford WI

Quote:

Originally Posted by tobijohn

OK, so what do I have since I have G44 and G92. Is it a 3 series carrier and if so who makes a gear set for it?

Jul 29, 2004 | 02:43 PM

#18

tobijohn

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Quote:

Originally Posted by aklim

OK, so what do I have since I have G44 and G92. Is it a 3 series carrier and if so who makes a gear set for it?

You've got 3.07s. There are a couple different aftermarket gear manufacturers that have both 3.54 and 3.73 gears for a 3 series carrier. Richmond seems to be the name you see the most. Below are a few links to vendors who carry them. If you see the term "thick set", I think that refers to 3.x gears for 2 series carriers which is NOT what you want. At any rate, I'd get confirmation on this info as I'm just repeating what I've read here on the Forum:

http://www.ikerds.com/

http://www.ring-pinion.com/

http://www.reiderracing.com/dana36.htm

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