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

1968 baby blue C10 · 04-17-2018, 09:05 AM

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

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

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

Quote:

Originally Posted by Mike C

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.

04-17-2018, 09:05 AM	#1
1968 baby blue C10 Registered User Join Date: Sep 2017 Location: Ravenswood, West Virginia Posts: 239	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 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? __________________ 68 C10 long-fleet, Long and low is the way to go. factory: 307 sbc, SM465 4-speed, 12 bolt 4.11 rear end. 75,000 original miles. Build:Ole Blue Millennial and can drive stick. "Too many people have opinions on things they know nothing about. And the more ignorant they are, the more opinions they have." -Thomas Hildern

04-17-2018, 09:34 PM	#2
Mike C Registered User Join Date: Dec 1999 Location: Austin, TX, USA Posts: 7,739	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. __________________ 44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax



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