The 1947 - Present Chevrolet & GMC Truck Message Board Network - Did they make a 12 bolt, 4.11, open differential in 68?

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1968 baby blue C10

04-17-2018 09:05 AM

Did they make a 12 bolt, 4.11, open differential in 68?

Basically what the title says. I have a 12 bolt 4.11 rear end and the jacked up wheel spin test, and the more traditional wheel spin test :burnout: hehe, tell me its open. I plan to open it up sometime soon and make sure it isn't a posi and the clutches aren't just busted or something. Just wanted to ask you guys if they even made a 4.11 open?

Mike C

04-17-2018 09:34 PM

Re: Did they make a 12 bolt, 4.11, open differential in 68?

They made 4.57 open so I'd say yes. In cars I think you had to get the limited slip with 4.10 gears but not in trucks.

1968 baby blue C10

04-17-2018 10:16 PM

Re: Did they make a 12 bolt, 4.11, open differential in 68?

Quote:

Originally Posted by Mike C (Post 8241049)

They made 4.57 open so I'd say yes. In cars I think you had to get the limited slip with 4.10 gears but not in trucks.

Thanks for the reply. I kind of figured they did make them but I just wanted to make sure. It seems strange to me because I know my truck was somebody's farm truck, you'd think they would've got the posi.

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