2008 silverado aftermarket posi - The 1947 - Present Chevrolet & GMC Truck Message Board Network

KEL · 02-15-2013, 03:32 PM

Hello
i have a 2008 Silverado 4 wheel drive.
It could get stuck on wet pavement.
In four wheel drive, the wheel with the lesser amount of traction on each axel gets the power.
Question is :
Will an aftermarket posi unit fit in my factory differential case, or do I have to swap out the entire rear end ?
If one will fit in, which one ?

Thanks for the response(s).

**LEEVON** · 02-15-2013, 03:34 PM

Detroit true track is a popular option.

lowrollin70gmc · 02-15-2013, 08:08 PM

I have heard great things about the true trac and plan on running one in the rear of my 68 K20 when I get sick of the current G80 gov-bomb.

Do you have decent tires on the truck? When I don't want to warm up the 68, I drive an 88 k2500 beater during the winter. It has open axles but nice all season tires, just last week had to drive through a ditch with about 9-12 inches of snow and it trucked right through with use of the throttle. Also, during the winter it helps to keep weight in the bed for traction.

KEL · 02-16-2013, 07:57 AM

new tires all around.
no weight in the back
I can get stuck in four inches of snow.
we recently got three feet
it wasn't fun
thanks, guys

02-15-2013, 03:32 PM	#1
KEL 72 GMC Join Date: Feb 2008 Location: Wells, Maine Posts: 534	2008 silverado aftermarket posi Hello i have a 2008 Silverado 4 wheel drive. It could get stuck on wet pavement. In four wheel drive, the wheel with the lesser amount of traction on each axel gets the power. Question is : Will an aftermarket posi unit fit in my factory differential case, or do I have to swap out the entire rear end ? If one will fit in, which one ? Thanks for the response(s).

02-15-2013, 03:34 PM	#2
LEEVON Moderator Join Date: Jul 2006 Location: Ozark, MO Posts: 4,888	Re: 2008 silverado aftermarket posi Detroit true track is a popular option. __________________ '20 Silverado Trail Boss ~ '17 Tahoe ~ '79 K15 Sierra Grande ~ '76 Blazer 2wd ~ '71 Cheyenne swb ~ '55 Pontiac Safari ~'50 3100 bagged ~ '80 Wife ~ Late model kids

02-15-2013, 08:08 PM	#3
lowrollin70gmc Too many projects Join Date: Mar 2004 Location: Fargo, ND land of the flat hills Posts: 1,147	Re: 2008 silverado aftermarket posi I have heard great things about the true trac and plan on running one in the rear of my 68 K20 when I get sick of the current G80 gov-bomb. Do you have decent tires on the truck? When I don't want to warm up the 68, I drive an 88 k2500 beater during the winter. It has open axles but nice all season tires, just last week had to drive through a ditch with about 9-12 inches of snow and it trucked right through with use of the throttle. Also, during the winter it helps to keep weight in the bed for traction. __________________ Andrew 84 GMC C1500 SWB 6.2 Diesel/700R4/3.42 "Grandpa's odd duck" 70 GMC C1500 LWB My first truck: shaved, bagged, and more: the lowrollin70gmc 68 K20 Suburban 12V Cummins/NV5600/NP205/D60/11.5AAM 3.73s "Dakota Cadillac" 63 Chevy II Nova Coupe 250 I6/T56/4.56s "Economy car" 53 Willys Wagon 350/NV4500/BW4401/HP D44/9inch “Winter Wagon” 30 Model A 16 Focus ST

02-16-2013, 07:57 AM	#4
KEL 72 GMC Join Date: Feb 2008 Location: Wells, Maine Posts: 534	Re: 2008 silverado aftermarket posi new tires all around. no weight in the back I can get stuck in four inches of snow. we recently got three feet it wasn't fun thanks, guys

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