This is for you real gearheads:
I am in the process of installing new 3.54 Dana ring and pinion gears in a Salisbury rear axle for an XK-120 and have referenced the XK-120 Jag Shop Manual to find the proper zero cone setting. It only lists the 3.77 and 3.31 ratios. Does anyone have the proper dimension for a 3.54 ratio?
A friend has suggested that the zero cone setting for the 3.54 ratio listed in the E Type Shop Manual would be the same, at 2.625". However, the XK-120 manual lists the setting for the 3.31 ratio at 2.625" so I am dubious. I’m looking for a confirmed answer to this question, if one exists.
I have searched the archives and the internet for an answer but have come up short. I also measured and calculated the existing setting at 2.699" with a plus .005" mark on the face of the old pinion gear. This would suggest a zero cone setting of 2.694"