best gear brands need help asap

**krug07** · 08-06-2008, 04:47 PM

okay i need your guys opinon i have motive 3.90's in my car and a rebuild kit they were installed wrong. horrible experience i had. they whined so so loud i can hear metal against metal sound also something wasnt right. but anyways i got my money back they knew they messed up so im putting new gears in. this time im having a good shop that is well known do it. i want 3.90's but motive only makes them for our stock rear ends. i read that they whine a little that wouldnt bother me if its not that bad. but if its insane like these are i dont want em.. so what brands all are good. motive? gm performace? ect. shop offers gm performace are they any good? please help and give me advise as soon as possible i need my car back up and running this week or next week.. its my DD

thanks

**Jays00ss** · 08-06-2008, 05:46 PM

I had Motive performance in my old 10 bolt (3.90's) and now my 9" (4.30's)Never any issues. All aftermarket performance gears (especially when you go steeper in gear ratio) will whine a little. It's just the nature of the beast. If you want to play your going to have to pay a little. If you want a quiet ride buy a Toyota.

the 10 bolt is notorious for having whine when swapping out gears, The case of the rear tweaks, especially on hard takeoffs and the crappy torque arm can't handle the torque. It enevitably causes gear whine no matter how good a shop can put em in.

**SS SLP2** · 08-06-2008, 07:55 PM

I installed 3.73 AAM gear into my 10 bolt, quite as stock 3.23, would use AAM again
Johnny

**krug07** · 08-06-2008, 08:28 PM

i dont care to have silence i meant roaring louder then my exhaust or cant even talk or listen to your radio cause the whine is so loud. whining a little wouldnt bother me at all. the gears were put in wrong so i dont know what they would sound like if put it right if u kno what i mean. i wouldnt want to drive anything besides a trans am its my 2nd one. jus need some advise on what brands ect.

**krug07** · 08-07-2008, 06:22 PM

What about gm performace gears? im thinking with going with their 3.73 gears till i get my 9' rear end. heard they are quiet. what do you all think?

**Bandit1** · 08-08-2008, 04:41 PM

sorry to highjack ur thread but i gots a question also. im goin to upgrade to a 3.73 soon and was wondering what the difference is between motives and strange? thunder racing want 35 extra bucks for the strange gears.

**Jays00ss** · 08-08-2008, 08:32 PM

Originally Posted by Bandit1

sorry to highjack ur thread but i gots a question also. im goin to upgrade to a 3.73 soon and was wondering what the difference is between motives and strange? thunder racing want 35 extra bucks for the strange gears.

Can't go wrong with either. I say save $35 and get the Motives

**krug07** · 08-09-2008, 12:55 PM

anyone? about getting 3.73 gm performace gears???

**blackbirdbrain89** · 08-09-2008, 09:54 PM

gm gears are weeker the motive but they have to be quiter my motive suck balls i just drove 4hrs non stop on mine and ther not to bad till i was on the hight way 3hrs after that they heat up and make so much noise it not even funny

**Bottesini** · 08-10-2008, 02:18 AM

Originally Posted by blackbirdbrain89

gm gears are weeker the motive but they have to be quiter my motive suck balls i just drove 4hrs non stop on mine and ther not to bad till i was on the hight way 3hrs after that they heat up and make so much noise it not even funny

From what I have seen about GM 10 bolt gears is that the GM gearset is the strongest of any. In fact the aftermarket gears are 7.5" the GM are actually an 1/8" larger. The GM gears also tend to be some of the most expensive. With that said it is still a 10 bolt, and they just don't handle alot of abuse reliably compared to a different rear.

**krug07** · 08-10-2008, 03:29 PM

im putting them in just for time being. its my dd so i can get back and forth to work after a few months im getting a moser 9' rearend. so this is just for the the time being. the place im getting them installed is around 30-35min drive away from my place.. for break in period will it be okay to drive home and let it sett and cool down till the next day that i can drive it back and forth to work each day which is a 25min one there?

**N20LT4** · 08-10-2008, 04:48 PM

I use Moser Pro Street 3.70 gears in a 9". Good quiet gears and race proven. I've also used Motive, SLP (which I think were made by AAM?), and Richmond gears. All good gears, with the Richmond's being the noisiest.