how to ID No-Spin rearend? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

1969 GMC · 02-26-2004, 05:36 PM

hey everyone, quick question:
I am looking at buying an Eaton HO52 with the factory No-Spin (Detroit Locker) and I know there is a way to check with the diff cover off, but I forget it. I just want to make sure I'm not gonna get an open diff, which isn't what I need. Any help would be appreciated.

*67Fleetsidedream* · 02-26-2004, 06:53 PM

turn one of the wheels. If the wheel on the other side spins the same direction then you have a "no-spin" rearend. If it goes the opposite direction you don't have a "no-spin" rearend.

Rod · 02-26-2004, 07:04 PM

This is the correct one.. if when you look at it and you see the area circled in red has a brass looking plate in there... thats the locker unit.

Rod · 02-26-2004, 07:07 PM

Or you could just buy the locker unit its self... this was 1 I had but sold to board member..he was happy with it. I have lockers in my 3/4 ton 4x4 and my 1 ton dually.. I like em, and look for more when I'm out parts hunting.

Rod · 02-26-2004, 07:14 PM

You can check if its there with the spinning method...but you can spin a wheel and not have the other one spin... its gotta grab first.. so give it a couple vigorous spins like when your stuck and if it locks together you'll know. If it goes oppsosite way like in post above it aint the right stuff.

imdarren · 02-27-2004, 12:16 AM

Rear Axle Help / Question.
My 72 3/4 Ton 4X4 Cheyenne Super has a
G86 No Spin Rear Axle
Does this mean it's a locker, and not a posi?
A friend told me chevy never installed lockers from the factory (I don't know how much he really knows however).

Thanks for the help.

Darren

1969 GMC · 02-27-2004, 12:33 AM

Darren,
yes the No-Spin is a Detroit locker for the HO axles. It was an option 67-72, and perhaps before that as well.

67fleetsidedream, I am looking at buying just the axle. it is not connected to a truck, so i was looking for a way to ID by looking inside the pumpkin.

Rod, a brass look? Do you have a pic of one handy so I could tell the diff (no pun intended)?

Duallie · 02-27-2004, 01:33 AM

If you can see gears inside the differential, its open.
If you don't see gears, just smooth metal inside, its a Detroit Locker. Look for a metal tag on one of the pinion seal flange bolts, too. If it still exists, then its the Locker.

Rod · 02-27-2004, 01:40 AM

What?

Pics? what are those above.

Well... lets try explaining it a little different. You do have a color monitor right? LOL

Here is a pic of the same detroit locker posted above.... this one shows a little area circled in red... that the same type area posted and circled in the post above... you cant see a whole locker in the housing unless you take it apart.

Pretty much if you can stick your finger in that hole and you dont hit anything ...then there is no locker installed in the carrier.

If you hit that brass looking thing.. which is the side of the locker you got a prize.

1969 GMC · 02-27-2004, 01:46 AM

Quote:

Originally posted by Rod
What?

Pics? what are those above.

Well... lets try explaining it a little different. You do have a color monitor right? LOL

LOL, thanks Rod, I guess I need some more caffeine.

Grim Reaper · 02-27-2004, 11:57 AM

Quote:

Originally posted by 67Fleetsidedream
turn one of the wheels. If the wheel on the other side spins the same direction then you have a "no-spin" rearend. If it goes the opposite direction you don't have a "no-spin" rearend.

A tight limited slip will do that also.

With the wheels off the gound have a buddy hold one wheel and you hold the other. Give it a quick jerk one direction then the other and keep spinning. That should cause it to unlock and Should hear it ratchet.

67-72williso · 02-29-2004, 10:47 PM

Look for a oval tag on the front or glove box.

Later Willis

elcamino72 · 02-29-2004, 10:56 PM

I'm the member that Adam bought the rear end off of. I was pleased to here when he picked it up today he was happy with it. As I told him, the truck had all the good HD options, as it was a Custom Camper option with the SM420 tranny, HD springs, 327cu motor, no-spin, etc.

The truck was parked in 1974 with 99,000 miles on the clock and not driven after that. I had no reason to doubt that the locker was still in the rear axle, but Adam opened her up today and sure enough it was still there.

Thanks for the good transaction and I hope you found your way home alright Adam.

02-26-2004, 05:36 PM	#1
1969 GMC Registered User Join Date: Feb 2003 Location: The Rubber City Posts: 5,498	how to ID No-Spin rearend? hey everyone, quick question: I am looking at buying an Eaton HO52 with the factory No-Spin (Detroit Locker) and I know there is a way to check with the diff cover off, but I forget it. I just want to make sure I'm not gonna get an open diff, which isn't what I need. Any help would be appreciated. __________________ 1969 GMC K2500 1996 Honda Accord 2007 Kawasaki KLR 650

02-26-2004, 07:04 PM	#3
Rod Join Date: Dec 1999 Location: Eastern - Manitoba Canada, Winnipeg Posts: 4,369	This is the correct one.. if when you look at it and you see the area circled in red has a brass looking plate in there... thats the locker unit. Attached Images __________________ Senior active founding member. 70 3/4 ton GMC Suburban 4x4 250/4 spd. 71 1/2 ton Suburban Chevy 4x4, 350/350 72 Chev 1 ton tow truck 402BB w/Holmes 440 wrecker on propane 2005 FLSTSCI Harley Springer 85 FXSB Harley Lowrider 72 Triumph 650 Bonneville 5spd "Poor people don't have hobbies" Quote from wife.

02-26-2004, 07:07 PM	#4
Rod Join Date: Dec 1999 Location: Eastern - Manitoba Canada, Winnipeg Posts: 4,369	Or you could just buy the locker unit its self... this was 1 I had but sold to board member..he was happy with it. I have lockers in my 3/4 ton 4x4 and my 1 ton dually.. I like em, and look for more when I'm out parts hunting. Attached Images __________________ Senior active founding member. 70 3/4 ton GMC Suburban 4x4 250/4 spd. 71 1/2 ton Suburban Chevy 4x4, 350/350 72 Chev 1 ton tow truck 402BB w/Holmes 440 wrecker on propane 2005 FLSTSCI Harley Springer 85 FXSB Harley Lowrider 72 Triumph 650 Bonneville 5spd "Poor people don't have hobbies" Quote from wife.

02-26-2004, 07:14 PM	#5
Rod Join Date: Dec 1999 Location: Eastern - Manitoba Canada, Winnipeg Posts: 4,369	You can check if its there with the spinning method...but you can spin a wheel and not have the other one spin... its gotta grab first.. so give it a couple vigorous spins like when your stuck and if it locks together you'll know. If it goes oppsosite way like in post above it aint the right stuff. __________________ Senior active founding member. 70 3/4 ton GMC Suburban 4x4 250/4 spd. 71 1/2 ton Suburban Chevy 4x4, 350/350 72 Chev 1 ton tow truck 402BB w/Holmes 440 wrecker on propane 2005 FLSTSCI Harley Springer 85 FXSB Harley Lowrider 72 Triumph 650 Bonneville 5spd "Poor people don't have hobbies" Quote from wife.

02-27-2004, 12:16 AM	#6
imdarren Registered User Join Date: Oct 2001 Location: SW Washington Posts: 1,006	Rear Axle Help / Question. My 72 3/4 Ton 4X4 Cheyenne Super has a G86 No Spin Rear Axle Does this mean it's a locker, and not a posi? A friend told me chevy never installed lockers from the factory (I don't know how much he really knows however). Thanks for the help. Darren __________________ Washington State 1967 Chevy C10 LWB Rodstoration In Progress. 1972 K20 Cheyenne Super

02-26-2004, 06:53 PM	#2
67Fleetsidedream Wiseass secured himself a BAN Join Date: Nov 2000 Location: MOON!!! Posts: 2,282	turn one of the wheels. If the wheel on the other side spins the same direction then you have a "no-spin" rearend. If it goes the opposite direction you don't have a "no-spin" rearend.

02-27-2004, 12:33 AM	#7
1969 GMC Registered User Join Date: Feb 2003 Location: The Rubber City Posts: 5,498	Darren, yes the No-Spin is a Detroit locker for the HO axles. It was an option 67-72, and perhaps before that as well. 67fleetsidedream, I am looking at buying just the axle. it is not connected to a truck, so i was looking for a way to ID by looking inside the pumpkin. Rod, a brass look? Do you have a pic of one handy so I could tell the diff (no pun intended)? __________________ 1969 GMC K2500 1996 Honda Accord 2007 Kawasaki KLR 650

02-27-2004, 01:33 AM	#8
Duallie Registered User Join Date: Feb 2001 Location: Nikiski, Alaska Posts: 477	If you can see gears inside the differential, its open. If you don't see gears, just smooth metal inside, its a Detroit Locker. Look for a metal tag on one of the pinion seal flange bolts, too. If it still exists, then its the Locker. __________________ Just as if I knew what I was doin'

02-27-2004, 01:40 AM	#9
Rod Join Date: Dec 1999 Location: Eastern - Manitoba Canada, Winnipeg Posts: 4,369	What? Pics? what are those above. Well... lets try explaining it a little different. You do have a color monitor right? LOL Here is a pic of the same detroit locker posted above.... this one shows a little area circled in red... that the same type area posted and circled in the post above... you cant see a whole locker in the housing unless you take it apart. Pretty much if you can stick your finger in that hole and you dont hit anything ...then there is no locker installed in the carrier. If you hit that brass looking thing.. which is the side of the locker you got a prize. Attached Images __________________ Senior active founding member. 70 3/4 ton GMC Suburban 4x4 250/4 spd. 71 1/2 ton Suburban Chevy 4x4, 350/350 72 Chev 1 ton tow truck 402BB w/Holmes 440 wrecker on propane 2005 FLSTSCI Harley Springer 85 FXSB Harley Lowrider 72 Triumph 650 Bonneville 5spd "Poor people don't have hobbies" Quote from wife.

02-29-2004, 10:47 PM	#12
67-72williso Junk/Daily Driver Club Join Date: Feb 2004 Location: Manheim, PA 17545 Posts: 253	3/4 ton No-Spin Look for a oval tag on the front or glove box. Later Willis

02-29-2004, 10:56 PM	#13
elcamino72 Registered User Join Date: Jan 2003 Location: Enola, PA Posts: 29	I'm the member that Adam bought the rear end off of. I was pleased to here when he picked it up today he was happy with it. As I told him, the truck had all the good HD options, as it was a Custom Camper option with the SM420 tranny, HD springs, 327cu motor, no-spin, etc. The truck was parked in 1974 with 99,000 miles on the clock and not driven after that. I had no reason to doubt that the locker was still in the rear axle, but Adam opened her up today and sure enough it was still there. Thanks for the good transaction and I hope you found your way home alright Adam. __________________ Bryan Shook Collector Vehicle Fraud - Click Here!!!

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