Best posi? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

toddtheodd · 02-04-2005, 05:35 PM

What is the best posi for my 72 c10? I am most likely going to be single handedly supporting my local tire store, and I don't want my posi to turn back into a one wheel wonder on me.
Eventually I will be putting a big block in my truck, so the posi will have to be able to handle a lot.

Todd

toddtheodd · 02-05-2005, 02:04 AM

ttt

4x4Poet · 02-05-2005, 04:38 AM

Could you list the exact rear axle you have? This would narrow the topic since not all posis are offered for all axles, even GM or Dana. Thanks.

toddtheodd · 02-05-2005, 09:32 AM

Hmmm... all I know is that it is a 12 bolt. Looks like a normal (most common) rear end.... nothing too special about it.
The cover is not the round one. And the cover has 12 bolts.
It is coil sprung, 5 lug.
I will be putting 3.73's in it.

Does that help any at all?
Todd

MOTHERTRUCKERS · 02-05-2005, 12:16 PM

For a 3.73 you need a series4 carrier, there are 2 choices for the 12 bolt street driven race trucks EATON and AUBURN. If you already have 3.73 gears installed a POWERTRAX unit can be installed without resetting your backlash etc.

toddtheodd · 02-05-2005, 12:38 PM

I don't have the 3.73 installed yet.
But what is a "powertrax" unit?
I've got the carrier for the 3.73 (the ring gear is actually still on it), would it be cheaper to just drop that one in and get a powertrax?
Can the powertrax handle the abuse I want to give to it?
Todd

gaddman · 02-05-2005, 02:45 PM

Check out http://www.powertrax.com/noslip.html

I just put one in my 68. It was a very easy install. Seems to work fine. It is a little noisy moving around in the driveway making sharp turns. They say it will get quieter as it breaks in. Supposed to be able to handle 1000hp. I have a 454 with 3.07 gears, but I have not really got on it yet.

This is where I got it: http://www.tellico4x4.com
Part Number: 92-0788-3005. Same unit fits both 3 and 4 series carriers.

Hope it helps.

4x4Poet · 02-06-2005, 03:46 AM

And Auburn now offers their fairly new Ected. From the literature, the Ected seems better than positive clutch limited slips. Supposedly seamless to the driver, so better on snow and with less tire wear. I have no first hand knowledge, though. Only Aurburn's literature and a BB thread or two. I'm intriged, nonetheless. MotherTruckers, have you, by chance, any experience with Auburn's Ected?

02-04-2005, 05:35 PM	#1
toddtheodd The oddest Todd around Join Date: May 2004 Location: Miami, Florida Posts: 1,418	Best posi? What is the best posi for my 72 c10? I am most likely going to be single handedly supporting my local tire store, and I don't want my posi to turn back into a one wheel wonder on me. Eventually I will be putting a big block in my truck, so the posi will have to be able to handle a lot. Todd __________________ "The greatest pleasure is to vanquish your enemies and chase them before you, to rob them of their wealth and see those dear to them bathed in tears, to ride their horses and clasp to your bosom their wives and daughters." Ghengis Khan IIOY???

02-05-2005, 02:04 AM	#2
toddtheodd The oddest Todd around Join Date: May 2004 Location: Miami, Florida Posts: 1,418	ttt __________________ "The greatest pleasure is to vanquish your enemies and chase them before you, to rob them of their wealth and see those dear to them bathed in tears, to ride their horses and clasp to your bosom their wives and daughters." Ghengis Khan IIOY???

02-05-2005, 04:38 AM	#3
4x4Poet Registered User Join Date: Nov 2004 Location: "Under Montana skies." Posts: 1,836	Could you list the exact rear axle you have? This would narrow the topic since not all posis are offered for all axles, even GM or Dana. Thanks. __________________ '71 GMC K20 Suburban, '71 GMC K10 Suburban, '72 Chevy C10 CST Suburban, '72 Chevy K20 clunker pickup.

02-05-2005, 09:32 AM	#4
toddtheodd The oddest Todd around Join Date: May 2004 Location: Miami, Florida Posts: 1,418	Hmmm... all I know is that it is a 12 bolt. Looks like a normal (most common) rear end.... nothing too special about it. The cover is not the round one. And the cover has 12 bolts. It is coil sprung, 5 lug. I will be putting 3.73's in it. Does that help any at all? Todd __________________ "The greatest pleasure is to vanquish your enemies and chase them before you, to rob them of their wealth and see those dear to them bathed in tears, to ride their horses and clasp to your bosom their wives and daughters." Ghengis Khan IIOY??? Last edited by toddtheodd; 02-05-2005 at 09:56 AM.

02-05-2005, 12:16 PM	#5
MOTHERTRUCKERS Registered User Join Date: Dec 1999 Location: BRADENTON FLA Posts: 3,269	For a 3.73 you need a series4 carrier, there are 2 choices for the 12 bolt street driven race trucks EATON and AUBURN. If you already have 3.73 gears installed a POWERTRAX unit can be installed without resetting your backlash etc. __________________ Rest in Peace Ed. Thanks for all the good times.

02-05-2005, 12:38 PM	#6
toddtheodd The oddest Todd around Join Date: May 2004 Location: Miami, Florida Posts: 1,418	I don't have the 3.73 installed yet. But what is a "powertrax" unit? I've got the carrier for the 3.73 (the ring gear is actually still on it), would it be cheaper to just drop that one in and get a powertrax? Can the powertrax handle the abuse I want to give to it? Todd __________________ "The greatest pleasure is to vanquish your enemies and chase them before you, to rob them of their wealth and see those dear to them bathed in tears, to ride their horses and clasp to your bosom their wives and daughters." Ghengis Khan IIOY??? Last edited by toddtheodd; 02-05-2005 at 12:40 PM.

02-05-2005, 02:45 PM	#7
gaddman Registered User Join Date: Apr 2001 Location: Scottsburg, In Posts: 160	Check out http://www.powertrax.com/noslip.html I just put one in my 68. It was a very easy install. Seems to work fine. It is a little noisy moving around in the driveway making sharp turns. They say it will get quieter as it breaks in. Supposed to be able to handle 1000hp. I have a 454 with 3.07 gears, but I have not really got on it yet. This is where I got it: http://www.tellico4x4.com Part Number: 92-0788-3005. Same unit fits both 3 and 4 series carriers. Hope it helps. __________________ Gaddman Scottsburg, In 67 SWB w/93 step bed 68 LWB Fleetside C10 Custom 50 Chevy 3600 74 Norton Commando 850 72 Norton Commando 750

02-06-2005, 03:46 AM	#8
4x4Poet Registered User Join Date: Nov 2004 Location: "Under Montana skies." Posts: 1,836	And Auburn now offers their fairly new Ected. From the literature, the Ected seems better than positive clutch limited slips. Supposedly seamless to the driver, so better on snow and with less tire wear. I have no first hand knowledge, though. Only Aurburn's literature and a BB thread or two. I'm intriged, nonetheless. MotherTruckers, have you, by chance, any experience with Auburn's Ected? __________________ '71 GMC K20 Suburban, '71 GMC K10 Suburban, '72 Chevy C10 CST Suburban, '72 Chevy K20 clunker pickup. Last edited by 4x4Poet; 02-06-2005 at 03:48 AM.



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