tici

iTrader: (1)

I was considering a 2.73 to 3.42 (ev. 3.73) swap.
Do I need a different carrier?
I saw somewhere the 2.73 has a series 2 carrier, from the 3.42 and up it needs a series 3 carrier...
Is it true?

If yes what else do I need in addition to pinion + ring + carrier? (ok, an installation kit...) but will the casing fit the series 3 carrier?

Thank you - Stefano

SmokinHot98

iTrader: (20)

yeah I agree but my problem is I had bought an axle that came out offa 2.73 carrier and I have a 3.42 rear (posi that is stock) but the axle out of the 2.73 is different by the splines it tapers bigger. And what is the difference between the 7.5 rear and the 7.625 rear? Sorry man didnt mean to bud into your post but in a way its kinda similar problems.

Thanks Nick

FirstYrLS1Z

iTrader: (4)

In this 'gears and axles' forum,go back to a thread 'difference in carriers' back about 8-12-05.

Ouija

iTrader: (3)

A 2.73 to 3.42/3.73 swap requires either a different carrier, or purchasing a "XGear" or "ThickGear" set. Your housing should handle a 2 or 3 series carrier and/or gears just fine.

tici

iTrader: (1)

Is there any advantage / disadvantage using the old (2.73) carrier and the the special gear set? I mean, if I don't have to buy a new one...
Weaker?
More difficult to adjust?
More expensive?

chicane

I'll second that....

First off, ring gear spacers suck. Good idea, but poor execution.......

I would go with the thick gearset myself. There are no 'con's to running a thick gearset, except for a slight increase in weight (something you'll never notice). They ae no meaker, no more difficult to adjust and cost the same as a standard set.

And Nick, that would be 0.125".

tici

iTrader: (1)

Thanks!
Do you know where to buy those thicker gears? The vendors I know never specify what are the gears they sell...

Ouija

iTrader: (3)

You are jsut looking for a GM 7.5" Ring and Pinon gear for a series 2 carrier.

If you are looking for a 3.73:
Motive Gear part # G875373X
Richmond Gear part # 49-0007-1
USGear (Strange Gear) Part # 01-875373X

SummitRacing.com lists them as part # RMG-4900071
jegs.com lists them as part # 836-49-0007-1
also @ jegs.com part # 555-60010

Hope that helps you out.

SmokinHot98

iTrader: (20)

so since I have a 3.42 rear now I would need a ring gear set for a 7.625" rear-end (thick)? Also the same for the axles need to be for a 7.625" rear-end (3-carrier cuz no TCS)?

tici

iTrader: (1)

Yes, it helps!
Thanks

Ouija

iTrader: (3)

If your car stock came with a 3.42 rear end, you will need a gear set for a series 3 carrier. You do not need a "thick" or "X" gear set. The X gear sets are only for series 2 carriers.

Also you should still have a 7.5" rear end, all Fourth Gen F-Bodies came with a 7.5" 10-Bolt as far as I know.

Unless someone proves me wrong, TCS has nothing to do with gear sets or differential sizes. TCS equiped LS1's have a 4 channel ABS system, whereas non-TCS LS1's have a 3 channel ABS setup.

"Channels" and "carriers" are totally different things.

The only difference in axle lengths I know of is between 3rd gens, and 4th gens, so I don't know why your axles would be different lengths. As for splines, or teeth tapers, I can't help you there. I've never replaced an axle. I know there's a reticulator ring difference on TCS equipped cars, but I dont' think that woudl affect the teeth. You might want to start your own thread with a good title so people can post up and help you. Try something like "Are Axle lengths different?"

Ouija

iTrader: (3)

Just looked ath Thunder's site and they have the gears you need as well:

http://www.thunderracing.com/catalog...id=287&pcid=67

They also sell the Delux install kits you need for a 7.5":
http://www.thunderracing.com/catalog...id=256&pcid=67

SmokinHot98

iTrader: (20)

thanks a bunch

y2k_ta

iTrader: (80)

I recommend Thunder Racing. That is where I ordered mine. You'll just need to give them time to get back up to 100% before ordering after all the hurricane damage.