posi rear end ??? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**JQ-72** · 11-26-2002, 08:50 PM

On a 3/4 ton truck: What is the difference between NoSpin rear end (option # G86) and PowerLok (option # G87). Thanks for any help.
Joshua

**Classic Heartbeat** · 11-26-2002, 09:16 PM

I may be wrong on this, but I think one is a Dana 60 and one is the Corperate rear end. WES www.ClassicHeartbeat.com

mikep · 11-26-2002, 09:20 PM

So was the "maximum traction" option the detroit locker in the Eaton rear end ? Ive seen a few in junkyards and assumed they were lockers.

Rod · 11-26-2002, 10:01 PM

Maximum traction was in the Dana diff... The No-Spin is a Detroit locker in a Eation / Corporation diff.

mikep · 11-26-2002, 10:07 PM

I happen to know where a nice leaf spring eaton rear end is under a 67 C20 with a 6 cylinder and a close ratio M28 4 speed. Its the original rear end and its got the original build tag behind the seat. It says pretty clearly ... "maximum traction" on the build sheet.

Also... The detroit locker unit in my dana 60 is one I pulled out of a rear end that was in a pile so I dont know what it came out of but its got 1962 date stamped all over it and the 4.10 gears that were in the rear end with it. I cant find any reference to Dana 60's being made that far back. Obviously they were. I wonder whats up with that.

11-26-2002, 08:50 PM	#1
JQ-72 Senior Member Join Date: Feb 2001 Location: Killen, Alabama USA Posts: 3,615	posi rear end ??? On a 3/4 ton truck: What is the difference between NoSpin rear end (option # G86) and PowerLok (option # G87). Thanks for any help. Joshua

11-26-2002, 09:16 PM	#2
Classic Heartbeat Project Junkie! Fishing Poor!! Join Date: Dec 1999 Location: Olympia,Wa. 98512 Posts: 10,768	I may be wrong on this, but I think one is a Dana 60 and one is the Corperate rear end. WES www.ClassicHeartbeat.com __________________ On-line catolog Classic Heartbeat Pickup Parts WEHEPP@comcast.net Call us Toll Free (888) 338-2502 Like Us on Facebook No appointment necessary. 72 BB Chevy Custom Deluxe / Custom Camper 67 I-6 (Soon to be 5.7 LS1) Panel 68 BB Chevy Short Bed 72 6.0 LQ9 Short Bed Chevy 4X4 Olympia's fastest growing truck parts supplier. Olympia's home for Wayward Chevys

11-26-2002, 09:20 PM	#3
mikep Used to have a truck Join Date: May 2002 Location: port orchard WA Posts: 1,552	So was the "maximum traction" option the detroit locker in the Eaton rear end ? Ive seen a few in junkyards and assumed they were lockers. __________________ No truck :-(

11-26-2002, 10:01 PM	#4
Rod Join Date: Dec 1999 Location: Eastern - Manitoba Canada, Winnipeg Posts: 4,369	Maximum traction was in the Dana diff... The No-Spin is a Detroit locker in a Eation / Corporation diff. __________________ 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.

11-26-2002, 10:07 PM	#5
mikep Used to have a truck Join Date: May 2002 Location: port orchard WA Posts: 1,552	I happen to know where a nice leaf spring eaton rear end is under a 67 C20 with a 6 cylinder and a close ratio M28 4 speed. Its the original rear end and its got the original build tag behind the seat. It says pretty clearly ... "maximum traction" on the build sheet. Also... The detroit locker unit in my dana 60 is one I pulled out of a rear end that was in a pile so I dont know what it came out of but its got 1962 date stamped all over it and the 4.10 gears that were in the rear end with it. I cant find any reference to Dana 60's being made that far back. Obviously they were. I wonder whats up with that. __________________ No truck :-( Last edited by mikep; 11-26-2002 at 10:12 PM.



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