gear help fast !!!!!!!!

[jj_macdragracing]

was going to buy these in the morning from a guy... will they work i have a 94 trans am auto... with i beleive the 2:70 something gears.. is it the same carrier as the 3:23 ???
help i need to know before the morning

this is what he has ::::

I have a good used set of GM gears for a 10 bolt axle.
Set of stock GM 3.73 gears for BOTH the 7.5 and 7.625 10 bolt open OR posi rears. Pinion has 11 teeth, ring gear has 41 teeth. These are the stronger 7 5/8 version.
These gears are for a 3.23-up carrier (3 series) but can be used with a 2 series if a spacer is used.
Very Good condition. Came from a stock daily driver S10.
These are genuine GM gears, not cheap imported aftermarket gears. They are stock gears for a 3 series (3.23-up) carrier. Will fit ANY 1977-up GM vehicle with 7.5/7.625 rear-- S 10, S-10 Blazer, 78-87 Monte Carlo, Cutlass, Grand Prix, 1982-up Camaro / Firebird, etc.

This ratio will give you great bottom end torque while still alowing you to cruise on the free way. Any lower and your motor will run to high on the free way. Great for a street/strip vehicle or just better performance out of your vehicle without touching the motor.

Includes:
Ring gear
Ring gear bolts
Pinion gear
Pinion large bearing
Yoke with washer, nut, straps and strap bolts

Everything needed for the swap except axle gasket($4) and oil($6).

[shawnc16]

They wont fit your carrier.... that might be where he's saying something about a spacer..

[Phantom409]

If you have a 2.70 gear and you want 3.23 or bigger you will need a different carrier.

You have the 2 series and you need a 3.

http://www.camaroz28.com/forums/showthread.php?t=468748

[jj_macdragracing]

mine should be a (3 carrier) though?? right i dont have traction control... i thought the 3 carriers where without traction control and the 4 carrier is with traction control

[shawnc16]

Yur mixing different things together.. find yur RPO codes and see what gear your car has for sure..

[jj_macdragracing]

what code is for what ?? anyone know

[shawnc16]

Axle Ratios:
3.23: Pinion=13 Ring Gear=42 (performance axle)
2.73: Pinion=15 Ring Gear=41

This is all I could find with a very quick search.. start counting teeth.. or just assume.. but that 3.73 setup wont work with the 2.73 pinion. You need a spacer or the 3 series carrier

[Phantom409]

1. I have a leak, where is it coming from?

The two most common places for a rear end to leak are the pinion seal (the front of the housing) and the rear end cover. Pinion seal seepage is very normal for an f-body, as long as you check your fluid and it doesn’t leave drips on the ground, it is usually okay. Many times people take their cars to be fixed at the dealership only to have it leak again. The rear cover will leak because of a bad gasket/poor use of RTV sealant. You will notice a few drips hanging from the very bottom of the housing, and the area around it may be damp as well. Fixing a rear cover leak is very simple – remove the cover, scrape the old gasket/RTV off of the cover & the housing, lay down fresh RTV sealant on the cover, bolt it back on and add the appropriate fluid (75w90 & GM rear end additive). The rear end is full when fluid begins to spill out of the drain plug on side of the housing.

One should not attempt to fix a pinion seal leak unless they are familiar with the way a rear end goes together, because pinion depth & crush sleeves are vital to correct setup. Fixing a pinion seal includes removing the driveshaft, pinion nut, washer, yoke, and old seal. The housing should be clean from nicks, and the yoke should be cleaned with a scotchbrite pad to get rid of any unsmooth areas before the new seal is installed. When retightening the pinion nut, it is important not to overcrush the crush sleeve.

2. What gears are best for my car?

To find what gears are best for you, it would be wise to use the search function of this website to look at cars that are similar to yours in modification. In general, most people with 6 speed cars choose 4.10s, and most people with automatic cars choose 3.73s. However once you start adding modifications like a new camshaft or a forced induction system, you should spend time researching before you decide. Automatic LS1 cars come with 3.23s or 2.73s from the factory, and six speed LS1 cars have 3.42 gears.

3. What is a gear ratio, and how do I know what I have?

If your car's rear end is untouched, you can go by the RPO codes to find out what it came with. RPO codes are three digits, and are listed either in the door jamb or in the glove box.

GU2 = 2.73
GU5 = 3.23
GU6 = 3.42

A gear ratio is the number of teeth on one gear compared to another. To find the ratio, you divide the number of teeth on the driven gear by the number of teeth on the driving gear. For instance, the number of teeth on a ring (driven) gear is 41. The number of teeth on a pinion (driving) gear is 10. 41 divided by 10 = 4.10.

4. What can I expect to pay for a gear upgrade?

A set of gears themselves will cost $150-$250 depending on what brand you purchase. Most shops will charge $250-$400 in labor, and may add more for supplies. Overall, you will spend $400-$700 on a gear change depending on your location. Don’t skip out and go with the cheapest one – be certain that a trained professional is handling your installation!

5. Can I set up my own rear end?

You may or may not be able to, depending on your level experience. If you perform all of your own installations and are patient, it is possible to perform it yourself, but it would really help to have someone who has done it before to help you through your first time. Setting up pinion depth & backlash are vital to a well-working rear end. Gears that are not set up correctly will whine or howl, and fail prematurely.

If you want to read more about installing gears, visit the site below for a complete how-to.

www.keliente.com/gears.htm

6. Is a 10 bolt even worth putting money into?

Theoretically, a 10 bolt is going to be weaker than a 12 bolt, or Ford 9 inch rear end due to the size, but that doesn’t make it useless. Some people have more luck with 10 bolts than others, obviously. The life of your rear end will depend on how you drive and maintain your car. If you are running slicks at the drag strip and launching from 6,000 rpms, something is bound to break eventually. If you don’t keep up on fluid and let it run low, the bearings will fail prematurely. If your gears are not set up correctly, it’s more bad news. However there ARE people out there who have ridden their 10 bolt right into 10 second passes in the quarter mile.

Whether you will need a ‘better’ rear end is up to you. If you are replacing parts of your 10 bolt every other week, yes, it’s time for an upgrade. Don't be "that guy" who can't afford a 12 bolt, yet is installing a new gear set in the 10 bolt every week!!

7. Are some gears noisier than others?

Yes, some gears (such as Richmond) will be noisier than others. However, the noise should not be overpowering. If it is unbearable, the gears may have been set up incorrectly.

8. What is backlash?

Backlash is the play between the ring and the pinion, i.e., how much space there is exactly before the pinion actually contacts the ring. It is measured with a dial indicator gauge (either magnetic or clip on). Too little backlash will make for a bad whine, and too much makes for a sloppy setup. In general, different manufacturers call for .006” - .010” backlash (some may even allow for more).

9. What is a ‘paddle’, and a paddle kit for that matter?

A paddle takes the place of an axle pin in a Torsen differential car. Instead of a thin cylinder, it is shaped like a block and is held in with an 8mm bolt. The purpose of a paddle or axle pin is keep the axles pushed outward, and thus retained with the c-clips. Sometimes when installing different gears, a paddle kit may be needed for re-installation. SLP’s paddle kit is a two piece paddle that allows it to fit. To decide if you will need one or not, be sure to contact the sponsor from whom you are purchasing the gears.

10. Besides gears, what do I need for an install?

It is good practice to replace all of the bearings when installing new gears…if you have the rear apart anyway; it only takes extra minutes to replace the bearings. A good master installation kit will include everything you need, but specifically if you choose to replace everything you will need: carrier bearings (2), front pinion bearing, rear pinion bearing, crush sleeve, pinion nut, axle bearings (2), axle seals (2), pinion seal, a set of shims, gear paint, loctite, RTV gasket maker, 75w90 (2), GM rear end additive (for LSDs). It is also a good idea to replace the ring gear bolts, which may stretch over time. They are left hand thread, fyi.

11. I can’t get my axles out, they won’t slide in far enough to remove the c-clips!

Got a car with traction control? The sensor is prohibiting the axle to move in far enough. Remove the sensor from the backing plate and it will allow you more room to slide it inward to drop the c-clips.

12. What is a series 2 or series 3 carrier, and what do I have?

A 2 series carrier is a car that came with 3.08s or lower from the factory (i.e. all of your 2.73 cars). A 3 series carrier is a car that came with 3.23s or higher. This is very important when you order new gears, as they will differ from 2 to 3 series carrier!

13. What gear oil should I use?

You can find this in the owner's manual. Otherwise, 75w90 or 80w90 will work fine. It is not necessary to use synthetic oil. Also if you have an auburn carrier you will need the limited slip additive.

14. How much gas mileage will I lose going up in ratio?

This question is going to depend on different things...such as whether your car is a manual or automatic, how big of a jump you made in gear ratio, and how much city and highway driving you do. However, it is pretty safe to say that the performance and fun-factor gains are going to be worth whatever miniscule gas mileage you may lose.

15. What's the difference between a 3 channel and 4 channel rear?

A three channel rear end has ABS. A 4 channel rear end has ABS and traction control. A 'channel' is just a way of describing the means for a speed sensor to gauge the wheel speed. On a 3 channel rear end, the two front wheels have sensors, and there is one sensor on top of the rear end housing that reads for the whole rear. On a 4 channel rear end, there is a speed sensor at every wheel. 4 channel rear ends have reluctor wheels on each axle, 3 channel rears have one big reluctor ring on the differential. Because a 4 channel has a sensor at each rear wheel it can see the difference in speed between one wheel and the other, and ta-da, you have traction control.

16. Will a 3 channel rear end work in my 4 channel car?

Yes, you can make it work, if you put the axles from your four channel car into the 3 channel rear end and install the sensors into the backing plate. To put a 4 series into a 3 series would be more difficult, because it would require you to drill in the top of the rear housing for the sensor, and add a reluctor ring to the carrier as well.

17. Can't I just edit ASR/ABS out of the PCM with tuning software?

The answer is no, because the PCM does not control these functions. They are regulated by the EBCM (electronic brake control module) which is attached to the ABS pump. So if you attempt to swap the wrong rear into your car and don't hook it up right, the dash lights will illuminate...unless you pull the bulbs, or put electrical tape over the lights. The EBCM will kill the dash lights when everything passes its own self-test.


Read through the link I posted it will help you BIG TIME!!!

[jj_macdragracing]

thanks guys.. i will check my car right now... i just thought it would be a good buy for 50.00

i looked on ebay for spacers and saw one for 50.00 wow !!!!

[ba94ta]

Very nice find Phantom383 a lot of good information.....

[csmith4153]

thanks guys.. i will check my car right now... i just thought it would be a good buy for 50.00

i looked on ebay for spacers and saw one for 50.00 wow !!!!

I have new gear sets in stock from about $150.00
I also have a package that includes a Motive Gear Set, Intsall kit, and gear lube for about $300.00

[jj_macdragracing]

i will keep that in mind...
i desided to pass i dont have any sticker in my glove box.. and only tire size and weight on the door sooo looks like i will have to wait to pull the cover off sometime to see what i have... i just figured for 50 bucks it wasent to bad a deal.... so if anyone wants a set

they are on craigslist in grand rapids part just look up

[csmith4153]

What size tire did the car come with?

[jj_macdragracing]

willl look at the sticker when i get home.. i have 18" boyde coddington's now lol

[jj_macdragracing]

What size tire did the car come with?

235/55/16 is what it says on the door