Open to Posi Rear Conversion- How? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

avejoe · 11-17-2004, 12:18 PM

I have a 72 K10 GMC with a leaf spring readend. When I spin one wheel the other spins in the opposite direction so I believe I have an open or non-posi rearend.

What is the most efficient and cost effective way to convert it to a posi?

What is the technical difference between a posi and a locker?

Thanks!

70c10 · 11-17-2004, 01:45 PM

Don't know about a locker but you need to know what gears you have or planning to use and buy a posi unit compatible. I paid $280 for my eaton.

elk hunter · 11-18-2004, 01:33 PM

if you drive your truck on the street you want a limited slip diff. if it is for off road, go with a positive locking diff. thats not to say that you cant use a locker on the street, they can just be a little noisy and give you some front end push or under steer. once you get used to the driving charatoristics, i think you will like the locker. i have a locker in my 72, and have a samurai with lockright lockers front and rear. if you go with a lockright, you can use your carier. the instructions are easy to follow and in about an hour, you can be done. good luck!!

jet mec · 11-18-2004, 02:01 PM

I want to do the same thing. I know nothing of the subject. But I am about to learn. I think I may go with a mini spool, but I'm not sold on it yet. I want to drive it once in a while as well as race it.

Super Duck · 11-18-2004, 02:16 PM

the only way a spool is good on the street is if you like to brake parts

jet mec · 11-18-2004, 02:24 PM

I don't want that to happen. I guess I'll keep it off the street, and on the track...

11-17-2004, 12:18 PM	#1
avejoe Custer had a plan too. Join Date: Dec 2003 Location: No. California Posts: 344	Open to Posi Rear Conversion- How? I have a 72 K10 GMC with a leaf spring readend. When I spin one wheel the other spins in the opposite direction so I believe I have an open or non-posi rearend. What is the most efficient and cost effective way to convert it to a posi? What is the technical difference between a posi and a locker? Thanks! __________________ 72 K15 GMC (aka Big White) Performance Rockers, Cab Corners, and Floors Fossil Fuel Glutton Neighborhood Nuisance 98 BMW 540i for Speed (Sold ) 05 Subaru Outback for mileage

11-17-2004, 01:45 PM	#2
70c10 67-72 Addict! Join Date: Feb 2002 Location: The TAX State! Posts: 7,856	Don't know about a locker but you need to know what gears you have or planning to use and buy a posi unit compatible. I paid $280 for my eaton. __________________ Jim 1970 C/10 Fleetside w/Ghost Flames Lowered 4.5" front and 4" rear (Raked) 355/350 Turbo w/shift kit 10" Redneck Performance Verter w/2500 stall Hooker Super Comps part#2808-1 Performer RPM Air-Gap 12 Bolt w/3:73 gears- Eaton Posi Comp Cams XE262 with 1.6 Crane Energizers, Road Demon 625 and Brodix IK 180 heads

11-18-2004, 01:33 PM	#3
elk hunter Registered User Join Date: Dec 2003 Location: oregon city, or Posts: 164	if you drive your truck on the street you want a limited slip diff. if it is for off road, go with a positive locking diff. thats not to say that you cant use a locker on the street, they can just be a little noisy and give you some front end push or under steer. once you get used to the driving charatoristics, i think you will like the locker. i have a locker in my 72, and have a samurai with lockright lockers front and rear. if you go with a lockright, you can use your carier. the instructions are easy to follow and in about an hour, you can be done. good luck!! __________________ yeah, but how's it wheel?

11-18-2004, 02:16 PM	#5
Super Duck Chevy Nuttttt Join Date: Sep 2004 Location: Santa Maria Ca. Posts: 568	the only way a spool is good on the street is if you like to brake parts __________________ 67' Chev swb step side 69' SS elky 03' Chev ext cab 4X4 hey who lernt me to spell is there anything else?

11-18-2004, 02:01 PM	#4
jet mec Registered User Join Date: Sep 2004 Location: Ga Posts: 30	I want to do the same thing. I know nothing of the subject. But I am about to learn. I think I may go with a mini spool, but I'm not sold on it yet. I want to drive it once in a while as well as race it.

11-18-2004, 02:24 PM	#6
jet mec Registered User Join Date: Sep 2004 Location: Ga Posts: 30	I don't want that to happen. I guess I'll keep it off the street, and on the track...



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