Dana 36 Upgrade?
Melting Slicks
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if you go 3.54 (like me) then put Richmond gears in your 2.59 ($325 gears + install)
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Yes you can change the gear ratio within the D36 carrier. 3.07, 3.54, 3.73.
On an LT1 car you can do that, or add a higher stall TC and get a similar feel.
On an LT1 car you can do that, or add a higher stall TC and get a similar feel.
Melting Slicks
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From: Olympia, WA
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Sounds like the best dang for the buck. Is it good for free-way cruising too?
Last edited by jakey1999; Jul 15, 2019 at 05:06 PM.
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Is it the "3.54 Ratio Differential Ring and Pinion for 7.725 (Inch) (10 Bolt)" app from Richmond?
Last edited by jakey1999; Jul 15, 2019 at 05:20 PM.
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Oh...got it, the easiest solution is to swap out the whole differential as far as the labor goes. All of it is above my pay-grade. Thanks.
Last edited by jakey1999; Jul 15, 2019 at 07:11 PM.
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You cant just switch the 2.59 to a 3.07. The carrier is a different thickness from the factory. You can get an aftermarket 3.54 to fit the thin or thick carrier... Hope this makes sense.
FWIW when mine was stock, it had the 2.59. I went 3.54 and loved it.
Another thing you may want to consider is finding a dana 44 out of a 92-96 6speed. They will be 3.45 ratio. You will need the chunk, the batwing, driveshaft and c-beam. But it will be much stronger then the d36
FWIW when mine was stock, it had the 2.59. I went 3.54 and loved it.
Another thing you may want to consider is finding a dana 44 out of a 92-96 6speed. They will be 3.45 ratio. You will need the chunk, the batwing, driveshaft and c-beam. But it will be much stronger then the d36
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You cant just switch the 2.59 to a 3.07. The carrier is a different thickness from the factory. You can get an aftermarket 3.54 to fit the thin or thick carrier... Hope this makes sense.
FWIW when mine was stock, it had the 2.59. I went 3.54 and loved it.
Another thing you may want to consider is finding a dana 44 out of a 92-96 6speed. They will be 3.45 ratio. You will need the chunk, the batwing, driveshaft and c-beam. But it will be much stronger then the d36
FWIW when mine was stock, it had the 2.59. I went 3.54 and loved it.
Another thing you may want to consider is finding a dana 44 out of a 92-96 6speed. They will be 3.45 ratio. You will need the chunk, the batwing, driveshaft and c-beam. But it will be much stronger then the d36
Last edited by jakey1999; Jul 15, 2019 at 07:01 PM.
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You'll have to get a 3-series case for the D36 if yours came with 2.59s (2-series case), or you want the right gearset to fit the 2-series case and the right shop to do it, because if done wrong it will whine.
It doesnt require swapping out the entire diff and batwing, just all the guts.
Swapping to a D44 isnt something you seem to need from what you've said, but it is an option.
It doesnt require swapping out the entire diff and batwing, just all the guts.
Swapping to a D44 isnt something you seem to need from what you've said, but it is an option.
Last edited by vader86; Jul 16, 2019 at 12:19 AM.
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There were thousands of LT1 C4s that came with the $50.00 upgrade to the 3.07 ratio. It's really a great step up from the 2.59 almost like going from a V6 to a V8. They are relatively easy to find for sale as many D36 3.07s get upgraded to D44 3.45s. The nice thing about the 3.07 is it still gives you reasonable highway mileage as well as better acceleration.
Melting Slicks
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From: Park Ridge New Jersey
would a set of headers cancel out the whine?
I have a 3.07 I bought and 2.59 on the car. I was hoping to sell the 3.07 rear to finance the gears (Richmond $325 for 3.54). The money to check out/rebuild the 3.07 would go towards installing the Ricmond gears in the 2.59 rear....and all would be great.
Zip wants $1K for their rear and they want the 3.07 as a core....too much $$
Between the cost of the car and the mods, I stopped counting once I went over $15K. So I was hoping to save on the rear.
I was hoping to get away with the 3.07 on my LE2 build, but Lloyd was concerned the 3.07s would cause "lugging" at certain speeds/RPM....so I was hoping the Richmond 3.54s in my 2.59 carrier would work out
Last edited by vette196; Jul 16, 2019 at 11:12 AM.
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You'll have to get a 3-series case for the D36 if yours came with 2.59s (2-series case), or you want the right gearset to fit the 2-series case and the right shop to do it, because if done wrong it will whine.
It doesnt require swapping out the entire diff and batwing, just all the guts.
Swapping to a D44 isnt something you seem to need from what you've said, but it is an option.
It doesnt require swapping out the entire diff and batwing, just all the guts.
Swapping to a D44 isnt something you seem to need from what you've said, but it is an option.
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There were thousands of LT1 C4s that came with the $50.00 upgrade to the 3.07 ratio. It's really a great step up from the 2.59 almost like going from a V6 to a V8. They are relatively easy to find for sale as many D36 3.07s get upgraded to D44 3.45s. The nice thing about the 3.07 is it still gives you reasonable highway mileage as well as better acceleration.
Melting Slicks
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As I mentioned above I have a 3.07 rear that I'm (eventually) going to sell, but I'm not sure if will work with your time line
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$1800 is steep to me. remove the c-beam, remove the driveshaft, unbolt the rear from the batwing....reverse the process. Now if the installed a new torque converter as well then $1800 wouldn't be that bad.
As I mentioned above I have a 3.07 rear that I'm (eventually) going to sell, but I'm not sure if will work with your time line
As I mentioned above I have a 3.07 rear that I'm (eventually) going to sell, but I'm not sure if will work with your time line