Want to see pics of gov. locker in CUCV's

[ford381stroker]

I have seen Detroit lockers and know what they look like but does any one have any pictures of the actual lockers that come in the M1009 and M1008's?

I have an opportunity to purchase a couple and want to make sure I am getting what the seller says they are.

Thanks for the help!

 

[mangus580]

1008's come with the detroit.

1009's have the typical Gov-Lock aka G80 limited slip from GM

 

[AJMBLAZER]

Do a Google/Dogpile/Yahoo imagesearch for G80 or Gov Lock. I've seen many shots of them online...although mostly broken.

 

[hndrsonj]

M1009's do NOT have detroits!

 

[Dabba]

Do a Google/Dogpile/Yahoo imagesearch for G80 or Gov Lock. I've seen many shots of them online...although mostly broken.

hah

 

[Westech]

Really there not that bad. Thing that kills them is big tires and lots of HP. They last a while if you are using them in a "stock" form and keep the gear oil clean and use the right additive

 

[OLDCHEV4X4]

Really there not that bad. Thing that kills them is big tires and lots of HP. They last a while if you are using them in a "stock" form and keep the gear oil clean and use the right additive

What killed that one?

 

[319]

I'm getting ready to change my oil, just so I don't have to take the "look at this mess" photos. Which additive is best for these?

 

[Westech]

The GM stuff works the best and is only like 8 bucks. You can pick it up at any parts store also.

 

[AJMBLAZER]

Ditto, the genuine GM stuff is good. I've even seen it recommended on Ford and Dodge forums.

 

[hobie237]

For photos, drawings, etc. of the Detroit, go to Eaton's website. They're the ones that make it.

 

[aboonski]

I just pulled the back off of a 12 bolt rear differential that is sitting in a '79 K5 Blazer and it looks like the Gov Lock setup in the photos that Westech just posted. No idea what the ratio is though. I will start a new thread to post photos of the internals in a few minutes.

 

[AJMBLAZER]

If the truck has the original axles and gears check for a build sheet in the glove box. The RPO codes will tell which ratio it has.

 

[aboonski]

Just looked in the glove box but there's no data sheet like the ones that I saw in my 80's K5s. Is there another area that they posted this information in the 79 models? I will probably jack up the rear or front and rotate the tires to count revolutions of the driveshaft and tires to get a ballpark of the ratio. I have heard you mark the tire and driveshaft and turn the shaft until the tire goes 360 degrees and the number of complete and partial revolutions of the driveshaft determines the ratio of the gears. I hope this is correct because I am going back out to do just tht right now.

 

[AJMBLAZER]

GM pretty much only put it in the glovebox.

 

[kurtkds]

If you still have the cover off of the rear end, you can look on the ring gear for some numbers. The ones your looking for would be something like 11:41. the 11 stands for the number of teeth on the pinion and the 41 stands for the teeth on the ring gear. divide the second # by the first and that will give you your gear ratio. 41 divided by 11 gives you 3.73

Hope this helps you figure your ratio out.

 

[aboonski]

Thanks kurtkds! I'll take the cover back off tomorrow to find the data on the ring gear and will post photos when I locate it. I will probably have to jack up the entire rear end to turn the gears. I really thought I had something when I looked at the carrier in this rear!

 

[kurtkds]

All you have to do is jack up one tire and put the tranny in neutral and spin the jacked up tire to get the carrier to turn. I'll post some pics of what the numbers look like.

The other numbers are part numbers and month/ year of manufacture.

 

[aboonski]

Thanks Kurt! I'll do another post tomorrow when I find the numbers. This K5 was a "trailering Special" (had that icon on the back fender of the Blazer) so who knows what the ratio will be.

 

[AJMBLAZER]

Probably on the low end then. That'd be a plus for those axles.