WTB: 3.73 gears - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Purs · 06-06-2003, 08:14 PM

anybody have a set of 3.73's that are in good shape? I'm looking for some for my 12 bolt for my chevelle. thanks.

*boytoytrading* · 06-06-2003, 08:51 PM

I have a set, Posi or not. I have several set's. I have no Idea what there worth, make me a offer.

70 longbed · 06-09-2003, 03:00 PM

boytoytrading,

You have just the gears, or the whole carrier with 3.73 for our trucks?

70 longbed · 06-09-2003, 03:00 PM

boytoytrading,

You have just the gears, or the whole carrier (posi) with 3.73 for our trucks?

bpmcgee · 06-09-2003, 03:21 PM

If Boy can't help you out, I've got gears and carrier for GM 12 bolt and gears for a dana 40 front end.

Brian

6772king · 06-09-2003, 04:30 PM

I have a set of 373 and if any one has a 12 bolt 3:42 rear i will trade

Purs · 06-09-2003, 04:44 PM

will the 12 bolt truck gears and carrier go in a car 12 bolt?

70 longbed · 06-09-2003, 04:46 PM

They are different.

Purs · 06-09-2003, 05:02 PM

gracias!

71MoneyPit · 06-09-2003, 05:22 PM

any of you guys have a posi for 5 Lug 12bolt 3.07 gears?

70 longbed · 06-09-2003, 05:26 PM

I know that the carriers are different, and if I remember, the ring and pinion is also different, and nothing is interchangeable. The carriers are different in the spline count for the axles, and I think that the pinion gear on the car is smaller so the bearings are wrong for the truck. You need to verify the differences, but I do know for sure that they are different.

6772king · 06-09-2003, 05:26 PM

i have the gears but no posi. just the open 3 series carrier, sorry i do have 5 sticks of 7018 welding rod though LOL!!!!!!!

70 longbed · 06-09-2003, 05:32 PM

71MoneyPit,

I think that the carrier is the same for 5 or 6 bolt. I know that I can change out my 70 axles for 72 axles and have a 5 bolt pattern on the rear of my truck. I think that the problem is finding the 12 bolt truck carriers used. I know that you can buy them new. I think that lazyguard had one for sale recently. I got mine from him awhile back.

*Shane* · 06-09-2003, 05:36 PM

Purs .. I have a set of NOS GM 3.73 gears for a TRUCK 12 bolt ... I think the passenger car 12 bolt & truck 12 bolt are different.

Let me know if you are interested in the gears ...

Purs · 06-09-2003, 06:40 PM

Shane, thanks but I'm looking for a set of gears (actually a whole 12 bolt rear) for my 68 chevelle. I've got 3.73's in my 72 truck and really like them.

**ScottH** · 06-09-2003, 11:07 PM

Can I buy a 12 bolt carrier posi and swap it into a 12 bolt non-posi rear (68)?
Thanks.

Boytoytrading - if this works, let me know what you want for either a 3:73 or 3:42 posi carrier unit. Thanks.

70 longbed · 06-10-2003, 11:41 AM

ScottH,

I bought a posi carrier for my non posi rearend. I took it to the local driveline guy and he performed the swap for me. Mine was a 70, but I think they are the same.

06-06-2003, 08:14 PM	#1
Purs Got Big Block? Join Date: Apr 2000 Location: West Texas Posts: 1,510	WTB: 3.73 gears anybody have a set of 3.73's that are in good shape? I'm looking for some for my 12 bolt for my chevelle. thanks. __________________ "Experience is what you get when you didn't get what you wanted."

06-06-2003, 08:51 PM	#2
boytoytrading Account Suspended Join Date: May 2003 Location: Base of Pikes Peak, Colorado Springs Co Posts: 376	3:73 I have a set, Posi or not. I have several set's. I have no Idea what there worth, make me a offer.

06-09-2003, 03:00 PM	#3
70 longbed Senior Member Join Date: Oct 2002 Location: Sierra Vista, AZ Posts: 490	boytoytrading, You have just the gears, or the whole carrier with 3.73 for our trucks? __________________ Keith 70 CST longbed in progress. Hoping to get it back on the road soon.

06-09-2003, 03:00 PM	#4
70 longbed Senior Member Join Date: Oct 2002 Location: Sierra Vista, AZ Posts: 490	boytoytrading, You have just the gears, or the whole carrier (posi) with 3.73 for our trucks? __________________ Keith 70 CST longbed in progress. Hoping to get it back on the road soon.

06-09-2003, 04:30 PM	#6
6772king Registered User Join Date: Feb 2002 Location: grove city pa usa Posts: 628	I have a set of 373 and if any one has a 12 bolt 3:42 rear i will trade __________________ 67 chevy short step 2wd 427 71 chevy short fleet 4x4 396 72 gmc jimmy 2wd 377 71 chevy blazer 4x4 454 69 chevy longhorn 5.9l cummins 72 chevy 400 2wd custom camper 67 chevy lwb 4x4 454-in pieces 67 chevy panel soon 4x4-400 67 gmc dump 4x4 1 ton-305 WTF!! 72 chevy 3/4 ton 4x4 burb 350 70 chevy panel 2wd 302 5 speed tko "THERE IS NO REPLACMENT FOR DISPLACMENT"!!!!!!!

06-09-2003, 03:21 PM	#5
bpmcgee Registered User Join Date: Mar 2003 Location: Northern Illinois Posts: 2,181	If Boy can't help you out, I've got gears and carrier for GM 12 bolt and gears for a dana 40 front end. Brian

06-09-2003, 04:44 PM	#7
Purs Got Big Block? Join Date: Apr 2000 Location: West Texas Posts: 1,510	will the 12 bolt truck gears and carrier go in a car 12 bolt? __________________ "Experience is what you get when you didn't get what you wanted."

06-09-2003, 04:46 PM	#8
70 longbed Senior Member Join Date: Oct 2002 Location: Sierra Vista, AZ Posts: 490	They are different. __________________ Keith 70 CST longbed in progress. Hoping to get it back on the road soon.

06-09-2003, 05:02 PM	#9
Purs Got Big Block? Join Date: Apr 2000 Location: West Texas Posts: 1,510	gracias! __________________ "Experience is what you get when you didn't get what you wanted."

06-09-2003, 05:22 PM	#10
71MoneyPit MPG...hmm..more like GPM Join Date: Sep 2002 Location: Medford, Oregon Posts: 339	any of you guys have a posi for 5 Lug 12bolt 3.07 gears? __________________ (Looking for 67-72 shortwide or shortstep bed) 71 C-10, 500ci of tire shredding Caddy torque, th400, 12 bolt w/Powertrax Lock-Right. Bald Rear Tires 85 Toyota 4x4- 22r 4-banger, 5 speed, I can actually AFFORD to drive this one.

06-09-2003, 05:26 PM	#11
70 longbed Senior Member Join Date: Oct 2002 Location: Sierra Vista, AZ Posts: 490	I know that the carriers are different, and if I remember, the ring and pinion is also different, and nothing is interchangeable. The carriers are different in the spline count for the axles, and I think that the pinion gear on the car is smaller so the bearings are wrong for the truck. You need to verify the differences, but I do know for sure that they are different. __________________ Keith 70 CST longbed in progress. Hoping to get it back on the road soon.

06-09-2003, 05:32 PM	#13
70 longbed Senior Member Join Date: Oct 2002 Location: Sierra Vista, AZ Posts: 490	71MoneyPit, I think that the carrier is the same for 5 or 6 bolt. I know that I can change out my 70 axles for 72 axles and have a 5 bolt pattern on the rear of my truck. I think that the problem is finding the 12 bolt truck carriers used. I know that you can buy them new. I think that lazyguard had one for sale recently. I got mine from him awhile back. __________________ Keith 70 CST longbed in progress. Hoping to get it back on the road soon.

06-09-2003, 05:36 PM	#14
Shane Account Suspended Join Date: Jun 2000 Location: over yonder Posts: 14,270	Purs .. I have a set of NOS GM 3.73 gears for a TRUCK 12 bolt ... I think the passenger car 12 bolt & truck 12 bolt are different. Let me know if you are interested in the gears ...

06-09-2003, 06:40 PM	#15
Purs Got Big Block? Join Date: Apr 2000 Location: West Texas Posts: 1,510	Shane, thanks but I'm looking for a set of gears (actually a whole 12 bolt rear) for my 68 chevelle. I've got 3.73's in my 72 truck and really like them. __________________ "Experience is what you get when you didn't get what you wanted."

06-09-2003, 11:07 PM	#16
ScottH Senior Member Join Date: Sep 2002 Location: Hampstead, NC Posts: 8,187	Can I buy a 12 bolt carrier posi and swap it into a 12 bolt non-posi rear (68)? Thanks. Boytoytrading - if this works, let me know what you want for either a 3:73 or 3:42 posi carrier unit. Thanks.



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06-10-2003, 11:41 AM	#17
70 longbed Senior Member Join Date: Oct 2002 Location: Sierra Vista, AZ Posts: 490	ScottH, I bought a posi carrier for my non posi rearend. I took it to the local driveline guy and he performed the swap for me. Mine was a 70, but I think they are the same. __________________ Keith 70 CST longbed in progress. Hoping to get it back on the road soon.

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