How do you tell if a rearend is a Posi? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

68 Suburban · 07-19-2004, 02:10 PM

With out taking the cover off, or running numbers, is there a way to tell if a rearend is a posi? Thanks

67chevemall · 07-19-2004, 02:19 PM

Ya stomp on the gas if you make 2 tracks it's posi!
If you make 1 track it is a 1 wheel peeler!
Cheers

1BadSS · 07-19-2004, 02:29 PM

jack the rear up, if both tires spin in the same direction when you spin them, its posi. Otherwise, one goes in one direction and the other goes in the other. Its open.

**'70_402** · 07-19-2004, 02:31 PM

i like the tire spin technique!! two marks= posi one mark= one wheel wonder

zooza · 07-19-2004, 03:07 PM

sometimes if the rearend posi unit is worn it will only leave one mark also. Might just need clutches! Best way is to pop that cover, next best way: jack it up and turn one tire as mentioned earlier.

68 Suburban · 07-19-2004, 03:23 PM

thanks, that is what I thought, but it has been a long time

dinnut · 07-19-2004, 07:00 PM

idk both systems can be wrong. i have a open rearend in my truck and today i put it in neutral and revved it up and hit drive and i left 2 big black tire marks hehehehe. but most of the time its just 1. and if a posi is worn out it will only leave one mark..

68 Suburban · 07-19-2004, 07:57 PM

Quote:

=i have a open rearend in my truck and today i put it in neutral and revved it up and hit drive and i left 2 big black tire marks hehehehe

And you wonder why these things happen? :p

dinnut · 07-19-2004, 10:45 PM

lol..........

Tx Firefighter · 07-19-2004, 11:28 PM

You put it in neatral, revved it up, and dropped it in gear?

You're a damn fool. Transmissions and drivelines aren't free around here where I'm from, unless Mommy is paying for it I guess.

dinnut · 07-20-2004, 12:26 AM

Quote:

Originally Posted by Tx Firefighter

You put it in neatral, revved it up, and dropped it in gear?

You're a damn fool. Transmissions and drivelines aren't free around here where I'm from, unless Mommy is paying for it I guess.

this transmission is already on its way out and ive been working like 30 hours a week to save up for a 700r4 and all the parts to convert over. im also saving my money for a lokar shifter for the 700r4....

i know im a damn fool for doing that but this transmission will be gone soon and the rearend sometime in the future will be swapped out for a 5 lug unit

*Shane* · 07-20-2004, 12:28 AM

ok? ... but why rush it?

dinnut · 07-20-2004, 12:42 AM

i dont do it all the time. ive only done the neutral thing like once or twice in the truck...i was just saying i did it and my rearend is open but left dual tire marks.... seems like everyone is on my back lately

BobbyK · 07-20-2004, 02:19 AM

If it looks like this you've got a GovLoc posi unit.

07-19-2004, 02:10 PM	#1
68 Suburban Registered User Join Date: Oct 2000 Location: From Chicago, Live in Phoenix, AZ Posts: 6,802	How do you tell if a rearend is a Posi? With out taking the cover off, or running numbers, is there a way to tell if a rearend is a posi? Thanks __________________ Just sitting here contemplating contemplation.

07-19-2004, 02:19 PM	#2
67chevemall Registered User Join Date: Apr 2003 Location: NB Posts: 3,367	Ya stomp on the gas if you make 2 tracks it's posi! If you make 1 track it is a 1 wheel peeler! Cheers __________________ 1968 Chevy C10 307 3ott fleetside 1967 Chevy C/10 V8, 3spd, fleetside lwb.Sold 1967 Chev C/10 step, 383, M21. SOLD

07-19-2004, 02:31 PM	#4
'70_402 Senior Member Join Date: Dec 2003 Location: Pampa, Texas Posts: 1,553	i like the tire spin technique!! two marks= posi one mark= one wheel wonder __________________ https://www.ebay.com/itm/29620574751...mis&media=COPY

07-19-2004, 03:23 PM	#6
68 Suburban Registered User Join Date: Oct 2000 Location: From Chicago, Live in Phoenix, AZ Posts: 6,802	thanks, that is what I thought, but it has been a long time __________________ Just sitting here contemplating contemplation.

07-19-2004, 07:00 PM	#7
dinnut Registered User Join Date: Apr 2003 Location: missouri city, tx Posts: 4,486	idk both systems can be wrong. i have a open rearend in my truck and today i put it in neutral and revved it up and hit drive and i left 2 big black tire marks hehehehe. but most of the time its just 1. and if a posi is worn out it will only leave one mark.. __________________ 70 longbed 496/th400/Ford 9"

07-19-2004, 02:29 PM	#3
1BadSS NOT REALLY BANNED! Join Date: Jul 2004 Location: Shawnee, KS Posts: 1,072	jack the rear up, if both tires spin in the same direction when you spin them, its posi. Otherwise, one goes in one direction and the other goes in the other. Its open.

07-19-2004, 03:07 PM	#5
zooza Registered User Join Date: Jul 2004 Location: LINDEN, TN. Posts: 260	sometimes if the rearend posi unit is worn it will only leave one mark also. Might just need clutches! Best way is to pop that cover, next best way: jack it up and turn one tire as mentioned earlier.

07-19-2004, 10:45 PM	#9
dinnut Registered User Join Date: Apr 2003 Location: missouri city, tx Posts: 4,486	lol.......... __________________ 70 longbed 496/th400/Ford 9"

07-19-2004, 11:28 PM	#10
Tx Firefighter Watch out for your cornhole ! Join Date: Jun 2003 Location: Azle, Texas Posts: 14,162	You put it in neatral, revved it up, and dropped it in gear? You're a damn fool. Transmissions and drivelines aren't free around here where I'm from, unless Mommy is paying for it I guess. __________________ I'm on the Instagram- @Gearhead_Kevin

07-20-2004, 12:28 AM	#12
Shane Account Suspended Join Date: Jun 2000 Location: over yonder Posts: 14,270	ok? ... but why rush it?

07-20-2004, 12:42 AM	#13
dinnut Registered User Join Date: Apr 2003 Location: missouri city, tx Posts: 4,486	i dont do it all the time. ive only done the neutral thing like once or twice in the truck...i was just saying i did it and my rearend is open but left dual tire marks.... seems like everyone is on my back lately __________________ 70 longbed 496/th400/Ford 9"

07-20-2004, 02:19 AM	#14
BobbyK Registered User Join Date: May 2000 Location: Petrolia,Ontario,Canada but working in Port Huron,Mi. Posts: 1,772	If it looks like this you've got a GovLoc posi unit. __________________ 71 blazer,350SBC,approx.375HP,700R4,factory GM TPI.Dual electric fans,33x12.5x15 ATR on stock suspension. Petrolia,Ontario,Canada but working in Port Huron,MI. See ALL my Blazer pic's HERE

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