identify me - series number 2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

vern350 · 07-30-2007, 05:05 PM

what would this mechanism in the rear of 87 1/2 ton 4x4 be. Thanks again

Blazer1970 · 07-30-2007, 05:08 PM

That is an Eaton Automatic Locker, often referred to as a "Gov-lock". When one wheel spins those flyweights in the center of the picture spread out and apply clutches to lock the axle shafts together.

1969k10stepside · 07-30-2007, 05:16 PM

A.K.A.-The Gov Bomb...

vern350 · 07-30-2007, 05:33 PM

i've recently got 2 trucks. One is pictured, Gov-locked with 3.42 gears in a 10 bolt. The other is open with 3.07 gears in a 12 bolt and a d44. Which is better to keep. Thanks for the quick replies.

msgross · 07-30-2007, 06:08 PM

depends, are you dying for the ratio or a locking rear? I haven't heard good things about that rear but I have never had one either.

10 bolt vs dana 44 is pretty equal so which set seems to be in better shape?

Do you have large tires? If so then a larger ratio than either of these would be better IMHO...

vern350 · 07-30-2007, 06:47 PM

35" bfg mud terrans. Both are in good shape. I would like to sell a set, just gotta figure out what set to sell.

Blazer1970 · 07-31-2007, 06:35 AM

Keep the 12 bolt. You will kill that 10 bolt/gov-lock fast with 35s. Even the 12 bolt is marginal for those tires. You also should have 4.10 gears or lower with 35s.

68K20 x Drill · 07-31-2007, 03:46 PM

The Gov-lock works well if you are gentle with it, and if you aren't, you should probably get a 14 bolt anyway. It should work with a steeper gearset.
If you only plan to use the truck for wheeling, get rid of that thing.

vern350 · 07-31-2007, 04:04 PM

truck is going to be pulling trees and will be wheeled. Truck will never see the road. I have a 14 bolt. Its 8 lug and would like to use the d44 front diff which is 6 lug, so i guess i'll be using the 12 bolt and d44 for now. Another quick question..... which is stronger, 3/4 ton 10 bolt or a d44 from a 1/2 ton?

Blazer1970 · 07-31-2007, 05:21 PM

Quote:

Originally Posted by vern350

which is stronger, 3/4 ton 10 bolt or a d44 from a 1/2 ton?

They are basically the same strength. The 3/4 ton axle has bigger rotors for slightly better braking.

I would STRONGLY recommend that you go 8 lug right now. Use the 14 bolt - it probably has 4.10 gears already. Convert the front 44 to 8 lug if you want to use it. Unless you already have the 6 lug wheels and tires you would be foolish to use the 6 lug stuff.

vern350 · 07-31-2007, 09:43 PM

i have got a 3.73 rear that is 14 bolt. I have got 6 lug mags that have 15" bfgs mounted on them. So i would like to stay 6 lug. I guess i go until i break something and go from there.

07-30-2007, 05:05 PM	#1
vern350 like a rock Join Date: Nov 2004 Location: Ontario, Canada Posts: 517	identify me - series number 2 what would this mechanism in the rear of 87 1/2 ton 4x4 be. Thanks again Attached Images

07-30-2007, 05:08 PM	#2
Blazer1970 Registered User Join Date: Dec 1999 Location: Old Mission, MI, USA Posts: 2,507	Re: identify me - series number 2 That is an Eaton Automatic Locker, often referred to as a "Gov-lock". When one wheel spins those flyweights in the center of the picture spread out and apply clutches to lock the axle shafts together. __________________ Tim

07-30-2007, 05:16 PM	#3
1969k10stepside Registered User Join Date: Mar 2006 Location: USA Posts: 21,019	Re: identify me - series number 2 A.K.A.-The Gov Bomb...

07-30-2007, 05:33 PM	#4
vern350 like a rock Join Date: Nov 2004 Location: Ontario, Canada Posts: 517	Re: identify me - series number 2 i've recently got 2 trucks. One is pictured, Gov-locked with 3.42 gears in a 10 bolt. The other is open with 3.07 gears in a 12 bolt and a d44. Which is better to keep. Thanks for the quick replies. Last edited by vern350; 07-30-2007 at 05:33 PM.

07-30-2007, 06:08 PM	#5
msgross Registered User Join Date: Jul 2006 Location: Central PA Posts: 12,201	Re: identify me - series number 2 depends, are you dying for the ratio or a locking rear? I haven't heard good things about that rear but I have never had one either. 10 bolt vs dana 44 is pretty equal so which set seems to be in better shape? Do you have large tires? If so then a larger ratio than either of these would be better IMHO... __________________ The Garage: 1968 K-10 SWB - "Project Money Pit" 1996 Z-71 - "huntin rig" 1969 C-10 LWB (SOLD) "Project flip that truck or else" 1993 Passport, F@rd 1-ton (SOLD)"Project Cousin Eddie" My Garage Build "The 1,000 footer" Last edited by msgross; 07-30-2007 at 06:08 PM.

07-30-2007, 06:47 PM	#6
vern350 like a rock Join Date: Nov 2004 Location: Ontario, Canada Posts: 517	Re: identify me - series number 2 35" bfg mud terrans. Both are in good shape. I would like to sell a set, just gotta figure out what set to sell.

07-31-2007, 06:35 AM	#7
Blazer1970 Registered User Join Date: Dec 1999 Location: Old Mission, MI, USA Posts: 2,507	Re: identify me - series number 2 Keep the 12 bolt. You will kill that 10 bolt/gov-lock fast with 35s. Even the 12 bolt is marginal for those tires. You also should have 4.10 gears or lower with 35s. __________________ Tim

07-31-2007, 03:46 PM	#8
68K20 x Drill Registered User Join Date: Apr 2007 Location: Freedom CA Posts: 488	Re: identify me - series number 2 The Gov-lock works well if you are gentle with it, and if you aren't, you should probably get a 14 bolt anyway. It should work with a steeper gearset. If you only plan to use the truck for wheeling, get rid of that thing. __________________ 68 Chevrolet k20 Longbed 350 SM465/205, Dana 44, 14bolt, Power steering, Power Disk Brakes, 35" BFGs. 84 Chevrolet Suburban K20 6.2 Banks turbo TH400/NP208 Now with G80 68 GMC C20 Parts? Truck And a few cars

07-31-2007, 04:04 PM	#9
vern350 like a rock Join Date: Nov 2004 Location: Ontario, Canada Posts: 517	Re: identify me - series number 2 truck is going to be pulling trees and will be wheeled. Truck will never see the road. I have a 14 bolt. Its 8 lug and would like to use the d44 front diff which is 6 lug, so i guess i'll be using the 12 bolt and d44 for now. Another quick question..... which is stronger, 3/4 ton 10 bolt or a d44 from a 1/2 ton?

07-31-2007, 09:43 PM	#11
vern350 like a rock Join Date: Nov 2004 Location: Ontario, Canada Posts: 517	Re: identify me - series number 2 i have got a 3.73 rear that is 14 bolt. I have got 6 lug mags that have 15" bfgs mounted on them. So i would like to stay 6 lug. I guess i go until i break something and go from there.



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