Posi question... - The 1947 - Present Chevrolet & GMC Truck Message Board Network

pritch · 04-29-2011, 08:39 PM

I know that on an open diff, the wheels will turn opposite directions, you know, with the tires off the ground, and the way you tell if it's a posi is that the wheels will turn in the same direction. Is there any other condition that would have the wheels turn the same direction other than being posi?

I'm starting to think some PO may have changed the rear end out at some time. The rear brake lines are not stock, and both wheels turn the same direction. I guess I'll have to pull the cover to see for sure.

Thanks

**70cst** · 04-29-2011, 08:43 PM

I am going to say no but I am mechanically challenged so lets get some experts to reply.

99-LS1-SS · 04-29-2011, 09:01 PM

I would guess you have positive traction. If you're on a dirt road and you spin the tires do both tires leave marks?

**leddzepp** · 04-29-2011, 09:10 PM

sounds to me like you got posi...

turp mcspray · 04-29-2011, 09:16 PM

This is the rule of thumb, but I have seen the opposite happen in both instances. You'll have to pull the cover to be 100% sure. It's probably due for some fresh lube anyway.

pritch · 04-29-2011, 09:21 PM

Quote:

Originally Posted by 99-LS1-SS

If you're on a dirt road and you spin the tires do both tires leave marks?

That's the thing-I just bought this truck a couple weeks ago. One of the rear brakes was locked up tight so I trailered it home and got that brake drum off and so far have only driven it into the back yard, very carefully with no brakes. If it is decent weather tomorrow I might get the rear brakes put back together and go for a little test drive

As I've been working on these back brakes is when I noticed that the wheels both turn the same way.

Thanks for the info, guys.

04-29-2011, 08:39 PM	#1
pritch Registered User Join Date: Mar 2004 Location: Hoytsville, Utah Posts: 3,365	Posi question... I know that on an open diff, the wheels will turn opposite directions, you know, with the tires off the ground, and the way you tell if it's a posi is that the wheels will turn in the same direction. Is there any other condition that would have the wheels turn the same direction other than being posi? I'm starting to think some PO may have changed the rear end out at some time. The rear brake lines are not stock, and both wheels turn the same direction. I guess I'll have to pull the cover to see for sure. Thanks __________________ '68 Panel Project Boogie Chillin' '68 C-10 Ol' Green

04-29-2011, 08:43 PM	#2
70cst Senior Member Join Date: Feb 2001 Location: New Madison, Ohio Posts: 21,352	Re: Posi question... I am going to say no but I am mechanically challenged so lets get some experts to reply. __________________ A husband can be right...or...A husband can be happy. 67-72 Chevy and GMC Trucks...The Classic Truck for the Classic Folk. 1970 CST Two tone green, 402BB, 400 Automatic, Tach, Buckets, AC, AM-FM, Tilt, GM CB, GM 8 Tract, LWB, etc JOHN 17:3...The better side of "LIFE" Remember: Everyday is a good day...Some are just gooder!

04-29-2011, 09:01 PM	#3
99-LS1-SS Registered User Join Date: Mar 2011 Location: Oak Ridge NC Posts: 957	Re: Posi question... I would guess you have positive traction. If you're on a dirt road and you spin the tires do both tires leave marks?

04-29-2011, 09:10 PM	#4
leddzepp Moderator Join Date: May 2007 Location: Southern Cal Posts: 19,990	Re: Posi question... sounds to me like you got posi... __________________ 1972 C/10 Cheyenne Super SWB. Restored, loaded, slammed. 1968 C/10 50th Anniversary LWB. Unrestored, stock, daily driver/work truck. RIP ElJay RIP 67ChevyRedneck RIP Grumpy Old Man

04-29-2011, 09:16 PM	#5
turp mcspray Registered User Join Date: May 2007 Location: Rapid City South Dakota Posts: 2,359	Re: Posi question... This is the rule of thumb, but I have seen the opposite happen in both instances. You'll have to pull the cover to be 100% sure. It's probably due for some fresh lube anyway. __________________ Turp Mcspray New life for an old 2wd, farm blazer http://67-72chevytrucks.com/vboard/s...d.php?t=505987 My Blazer build http://67-72chevytrucks.com/vboard/s...d.php?t=342299



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