Is it Posi or limited slip? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

97silv5.7 · 11-20-2005, 02:45 AM

Im just curious obviously you know I have 97 silverado with the 5.7 just wondering if they have a limited slip or posi rear end, is there a way I can tell by the vin or number anywhere? Reason why Im asking went out raised som
e hell tonight of course on my new tires cause Im numb like that but everytime I power braked I caught posi which kinda surprised me, and held it until the tires locked so I got curious so any info will be good thanks

70short/step · 11-20-2005, 02:47 AM

I believe limited slip and posi are the same thing. Just different names.
This is from "CHRISMAN Differentials"
"There is no difference between a limited slip and a Posi. It’s just a different terminology used by each manufacturer. Posi originally came from the GM-trademarked Posi-Traction."

97silv5.7 · 11-20-2005, 03:13 AM

thanks was just curious I figuared it would just catch single track I was very surprised

b454rat · 11-20-2005, 09:39 PM

Look in your glovebox for a G80, that is the RPO for locking rear. Be careful tho, the light duty rears don't like spinning the tires other than ice....they like to grenade, hence the nickname Grenadelok.

11-20-2005, 02:45 AM	#1
97silv5.7 MooMoo Join Date: Feb 2004 Location: Shapleigh, Maine Posts: 2,424	Is it Posi or limited slip? Im just curious obviously you know I have 97 silverado with the 5.7 just wondering if they have a limited slip or posi rear end, is there a way I can tell by the vin or number anywhere? Reason why Im asking went out raised som e hell tonight of course on my new tires cause Im numb like that but everytime I power braked I caught posi which kinda surprised me, and held it until the tires locked so I got curious so any info will be good thanks __________________ '97 ext 4x4 3" body lift and 7'6" Fisher MM2 '04 Polaris 700 twin EFI sold 2-1-07 '07 Polaris 800 twin EFI Stealth Limited Edition Support the Board! Or deal with me foo! Its all fun and games till you find out shes 16.

11-20-2005, 02:47 AM	#2
70short/step Registered User Join Date: Dec 2003 Location: Stockton, CA Posts: 1,579	Re: Is it Posi or limited slip? I believe limited slip and posi are the same thing. Just different names. This is from "CHRISMAN Differentials" "There is no difference between a limited slip and a Posi. It’s just a different terminology used by each manufacturer. Posi originally came from the GM-trademarked Posi-Traction." __________________ For every person with a spark of genius, There are a hundred with ignition trouble. 70 Short/Step Last edited by 70short/step; 11-20-2005 at 02:52 AM.

11-20-2005, 03:13 AM	#3
97silv5.7 MooMoo Join Date: Feb 2004 Location: Shapleigh, Maine Posts: 2,424	Re: Is it Posi or limited slip? thanks was just curious I figuared it would just catch single track I was very surprised __________________ '97 ext 4x4 3" body lift and 7'6" Fisher MM2 '04 Polaris 700 twin EFI sold 2-1-07 '07 Polaris 800 twin EFI Stealth Limited Edition Support the Board! Or deal with me foo! Its all fun and games till you find out shes 16.

11-20-2005, 09:39 PM	#4
b454rat Senior Member Join Date: May 2004 Location: Binghamton, NY Posts: 3,485	Re: Is it Posi or limited slip? Look in your glovebox for a G80, that is the RPO for locking rear. Be careful tho, the light duty rears don't like spinning the tires other than ice....they like to grenade, hence the nickname Grenadelok. __________________ 2000 Chevy Tahoe Limited 3/5" drop 2000 GMC CCSB 454/4L80 6” lift SAS 1999 Chevy CCSB 454/NV4500 4” SAS 1999 GMC Yukon stock SAS 6"



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