posi install difficulties - The 1947 - Present Chevrolet & GMC Truck Message Board Network

EFI70Blazer · 06-18-2007, 01:25 PM

Almost forgot to mention, when you set up your gears it is usually never the same as the original ones. Sometimes everything works out, but out of 15 that i have set up only 1 worked out without having to change at least one thing. Installing your original pinion shim gets you close, but most the time you do have to change the carrier shims to get the correct backlash. Basically it is just trial and error until you get the right pattern.

Here is a nice little cheat card to verify correct pattern when you get to that point.

06-18-2007, 01:25 PM	#23
EFI70Blazer Active Member Join Date: Apr 2006 Location: Pendleton, OR Posts: 243	Re: posi install difficulties Almost forgot to mention, when you set up your gears it is usually never the same as the original ones. Sometimes everything works out, but out of 15 that i have set up only 1 worked out without having to change at least one thing. Installing your original pinion shim gets you close, but most the time you do have to change the carrier shims to get the correct backlash. Basically it is just trial and error until you get the right pattern. Here is a nice little cheat card to verify correct pattern when you get to that point. __________________ Mike T. Oregon 70 GMC Jimmy 4x4 70 Camaro LS1 plans in the works 71 RS/SS Camaro numbers matching 86 Chevy Silverado SWB 4x4 (454 merlin heads, 3/4 running gear upgrade, Detroit lockers front and rear) Last edited by EFI70Blazer; 07-02-2007 at 01:57 AM.



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