Need rearend opinions/suggestions/help please.

[Old Fart]

The worst case scenario is that it will be overgeared, which it sounds like you would enjoy anyway

O.K. so what exactly do you mean by overgeared? I never pay attention to the speedo or that RPM thingy when I shift...I just go by the sound. So what does overgeared mean exactly. It will change the way the car shifts?

my code sheet is on the drivers door not the glove box

HA-HA! My doors were stripped and painted. I'm screwed! Does it really matter what I have in there right now? Can't I just change to whatever or is that not such a good idea. I guess I'm asking what will happen if I go with say 3.90 gears and I have 2.?? whatever in there right now. Will any gears work with what I have? I don't want to buy new gears and a bearing kit only to find I have to have something else. I might just as well buy an entire new rear end. And if push comes to shove, I guess I can always mark the tire and drive shaft and try to figure it out that way. Sounds easy enough to do.

[JoeliusZ28]

When im talking about too much gear im talking primarily about 1st gear. If your car had a 2.73 gear originally, the trans has a really short 1st gear to compensate for it... so if you put a huge gear in it first gear is going to shoot through the RPMs at a finger's snap. Its nothing that would be a problem just something you should be aware of. If you have a 3.23 rear I think youll have the same 1st gear as everyone else and it wont matter.

it also does matter what rear end you have for the gearset, i think 2.73s were 2 series, and anything 3.23 and up is 3-series???

lol exactly what you wanted to hear im sure...

[Old Fart]

lol exactly what you wanted to hear im sure...

Thanks for the explanation.

[1BADAIR]

Since the inception of the 700, say 82 to current 700,4l60,4l60-e/65-e/and 70-e all have the same gear ratios : 1st = 3.06 , 2nd = 1.63 , 3rd = 1.00, 4th = .70 .

[JoeliusZ28]

Since the inception of the 700, say 82 to current 700,4l60,4l60-e/65-e/and 70-e all have the same gear ratios : 1st = 3.06 , 2nd = 1.63 , 3rd = 1.00, 4th = .70 .

we are not talking automatic transmission here, its a T56.

93 was in fact a screwy year for the T56, if you go to this website you will see that there are 3 different transmissions for the LT1 cars, 2 of them being 93 transmissions.

http://www.f-body.org/gears/

red, that site might also help you decide what gearset you want. Ive found it very useful.

[WMCCjames]

That's a good call Joel, I forgot that some of the early T56's were odd balls.

[1BADAIR]

If its a 6 speed they all came with 3.42 gears.

[JoeliusZ28]

If its a 6 speed they all came with 3.42 gears.

No they didnt

[Phantom409]

Well I have a 93 with the 6 speed and I had 3.23's in the rear.

Joel is right about the carrier though 2.73-3.08 i belive are a 2 series and 3.23 and up are 3 series.

I race my car so I put a 9" in that my neighbor got of a F-body and so I go a good deal, 1200.

I do have 4.10's in the 9" and it's really snappy in 1-2nd gear and when I'm going down the high-way @ 90 I'm really only going 75-77MPH ,
I'm off by about 12-15 MPH on the high-way

You will take the chance of breaking a set of 4.10's on a 10 bolt (stock rear) with a 6 speed, even with a stock motor.
I think Joel mentioned this but the stock rear has a 7.5 inch (I think) ring gear and the more teeth you add to it the weeker it gets because they have too add more teeth to an already week piece of equipment.

[Old Fart]

You will take the chance of breaking a set of 4.10's on a 10 bolt (stock rear) with a 6 speed, even with a stock motor.
I think Joel mentioned this but the stock rear has a 7.5 inch (I think) ring gear and the more teeth you add to it the weeker it gets because they have too add more teeth to an already week piece of equipment.

Someone else told me that to. I will keep it below 4.10 and maybe just go with something like this:

http://www.strangeengineering.net/ne...earendAD1.html

Wouldn't it be much easier to just get the above as opposed to tearing apart what I already have and fixing it?

[WMCCjames]

It boils down to how much you wanna spend. That S60 is a beast and you will never break it.......only thing you will need to get it to work is a shorter driveshaft. You get that rear and alot of fellas around here will be jealous.

[Phantom409]

[JoeliusZ28]

You get that rear and alot of fellas around here will be jealous.

to say the least

[phoenix_rising]

Heck I am already jealous! That rear end is sweet!

[1BADAIR]

sorry. I'm a idiot. I just figured out its a 93. I didn't pay much attention.

M28 3.36 2.07 1.35 1.00 .80 .62 2.73 GU2(1993 Only)
M29 2.97 2.07 1.43 1.00 .80 .62 3.23 GU4(1993 Only)
MN6 2.66 1.78 1.30 1.00 .74 .50 3.42 GU6(1994-2002)

The 93 trans is not very strong. They are not very reliable over 400HP