I have 2.59s now.I want to get 3.07s but my vette guy said my dana 36 wont handle them.I dont want to pay $1500 for a whole rear swap! have any of you guys put on after market 3.07s on your dana 36s and how well have they held up? I dont go to the track much so it would be for street use.And one more question,how much would it cost for parts and labor?thanks.

 

I think the 36 will handle them since many of them (like mine) came from the factory with them. Your Vette guy makes me wonder if he's really a Vette guy!

 

The internal carrier is different for 2.59 and 3.07's. You can change them, but its usually cheaper to buy a complete dana 36 rear end than paying for the carier and gear install.

 

Well there is a difference between 2 series and 3 series carriers, but there are companies that make stuff to fit.

 

Damn, who'd have thoght? Well the good news is that 36s go pretty damn cheap on here all the time. A lot cheaper than the 44s like I want! Now excuse me while I wipe the egg off of my face! :lol:


[Modified by Corvette Kid NC, 7:31 PM 5/12/2004]

 

my 95 vert came stock with 3.07 ratio and I'm pretty sure it has the dana 36 so go for it! someone correct me if mine doens't have the dana36.

 

3.07 wouldn't be worth the trouble. I recommend at least a 3.45. I put 3.73's in mine last week. Difference from 2.59 is night and day. If you decide to do the gear swap, remember your 2.59 carrier (like mine) will require the thick gears. If you purchase gears from a gear shop, they will have two sizes for the same gear ratio-one that works with the 3 series carrier and-the other that works with your 2.59 carrier. 3.07's ???? I would seriously reconsider that move. :D

 

3.07s is a good gear for ....mild to moderate modded vettes....but you should really consider how far you will eventually mod the car....if in the future there are major mods...heads ,cam, etc. Save your money for a Dana 44 conversion with 3.45s or 3.54s or 3.73s add drag radials and be done with it.
but if you just want to add some get up and go to your stock vette ...do a 2600 stall torque converter and 3.07s thats the best set up for running street tires..3.54s and 3.73s...create tire spin issues and bad launches...in my experience in running steeper gears.....3.07s are the over all best gear in a Dana 36....stronger..more reliable ...less spin and more top end left for running with the LS1 boys...PEACE!!! :beatdeadhorse:

 

"3.07s are the over all best gear in a Dana 36....stronger..more reliable ...less spin and more top end left for running with the LS1 boys...PEACE!!! "

thats true! I had a 99 coupe that didn't get but a 13.4 i nthe 1/4......my 95 vert with 3.07's got 13.2 on the first run with it!!! the c5 I had did have the 2.73 ratio tho maybe thats why it only got a 13.4 but the 95 feels more punchy with the 3.07s.....go with 3.07's unless your planning on putting really wide slicks and putting major power into the car for dragging....3.73 etcetc IMO are for the track cars I wouldn't want that in a weekend vette. just my .02

 

Let me tell you something about the 3.07 gears in an automatic Corvette. The 700R-4L60E transmissions have a much lower low gear than say a 350 or 400 Turbo Hydra-matic. With a 3.07 gear behind them, it is the equivalent of a 3.73 in low gear compared the the older transmissions. So if you plan on using the car as a driver and putting in some serious road miles, think long and hard about giving up the versatility of the 3.07s.


[Modified by Corvette Kid NC, 12:05 AM 5/13/2004]

 

QUOTE-----------------------------------------------------------------------------
The 700R-4L60E transmissions have a much lower low gear than say a 350 or 400 Turbo Hydra-matic. With a 3.07 gear behind them, it is the equivalent of a 3.73 in low gear compared the the older transmissions. So if you plan on using the car as a driver and putting in some serious road miles, think long and hard about giving up the versatility of the 3.07s.
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:iagree: LAUNCHING IN ''D'' ...with 3.07S AND.....THE ASR off......I COULD HARDLY TELL THE DIFFERENCE BETWEEN 3.54S AND 3.07S....PEACE!!!

 

I agree too......well never drove a car with 3.73 a truck yes not a vette tho. But with asr off from a stand still my 95 has a hard time find traction with 3.07's no power braking needed :D

 

Always wondered why my 95 A4 with 3.07 was so much quicker off the line than my 88 4+3 with 3.07. It was much quicker than the 50 extra HP would make you think it would be. I quess that extra low 1st gear of the automatic makes big difference. With the ASR off it seems that any higher gearing would be a waste as it would not got usable traction.

 

Well....

700-R4's have a very low first gear. This is why even 2.59 ratio cars have punch off the line. But this low first gear makes for wide spacing for the rest of the ratios. Fourth gear is still over-driven at .8 to 1 or something like that.

I had a Camaro L69 with 3.73 gears from the factory. Fifth gear was the same at .8 to 1 over-driven. I can say that a 3.73 ratio with a .8 to 1 final tranny ratio in top gear is very livable on the street or freeway. My Camaro would still do 140MPH with that ratio because of the over drive.

I would guess that a 2.59 equipped car with a .8 to 1 final tranny ratio would go faster one gear down than in top gear. Not so with a 3.73 ratio. Therefore, a 3.73 rear end gear in a car with a .8 final tranny ratio would probably have a higher top speed than a car with a 2.59 rear gear because it could utilize the tranny over-driven ratio better. Best of both worlds. More low-end, more top-end speed.

On the other hand, when you first start making performance improvements to an L98, you gain more torque than RPM. I can say with my 3.07's and 440 ft.lbs. of torque I can turn Micheloin 315 Pilot Sports to grease from a dead stop. So how much torque does one really need for street car?

There, I think I debuted the subject pretty well with myself, haha.

BIG JIM

 

Autos = D36
6 spd = D44 (stronger everything!)

Stock gears for auto were 2.59 or 2.73 (vert); performance gear was 3.07 except for a few 3.31s out there.

The carriers are different from one ratio to another; however, there are aftermarket gear sets that address this problem.

The D36 is strong enough to handle any of the gear ratios UNLESS you plan to do serious racing at the strip with sticky tires.

If you can find a complete pumpkin with the gears you want, the change over is fairly easy, even for the weekend wrencher.

 

I would say 3.07's are a great gear as well. Good launch with the auto and still enough gear to run comfy down the highway.

 

My 86 Z51 has 3.07 gears in the D36. I can tell you that I would not want any higher numerical ration ie. 3.73 etc. because the tire spin is bad enough with the 3.07 and cruise is great MPG is ~26 in the road @ 70. Unless you just like burnouts and low tire miles I would go with the 3.07 for the street. :cheers: