8 3/4 gear set up help

Back in the late 60's - early 70's, We had to refuse installing Zoom gears, becaue they were always noisy, and customers hated the noise, other brands .. no problem..

Jughead

ten years of working at chry. dealership for a start. 1966 chry. 5 times, 4 ring and pinions still had the noise between 42 -50 mph. had factory rep by my side for part of them. only got paid for one set-up so u know what we went through back then. about a month later chry sent out a bulletin to the effect live with it if the gear does go out in warranty we will replace it. said it was something about the machining that would be too expense to change.

I remember that memo,, "hatchet-marks"_ lol..

did you go thru the "boxcar bearing" fiasco, ??

Vehicles transported by rail, had flatspots pounded into the axle bearings.. you had to diss-mantle the bearing, without damaging it, to show the "flatspots" to get paid for warranty,, sheesh..

Anyone remember crankshafts 1 and 2 thou. under from factory?? that'll blow your oil pressure all to he!! . .

Oh Gawd ! ! ,, am I that old,,