Quote:
Originally Posted by factorystock
Impressive mock up Jon! Was thinking the '61-'63 3/4 ton cap ( approx 3/4" taller) vs. the lower '66 3/4 ton cap would be the ace in the hole. Sure looks like it would have cleared on your old gold '66, but photos can be deceiving. Maybe a note was left in the GMC hubcap box for buyer to drill out for a custom fit to mfg's lockout hub?
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Notice the shape of that 66 cap , everything tapers down to the outside edge. Where as the 62 63 is taller on the sides and sort of tappers to the center .Either hubcap will clear a fulltime 4x4 front axle without cutting , but the 1 3/4 spacer changes that. Still more research needs to be done as to why they are calling it J series and not G series . One thought is they could eliminate making a 4x4 cap in production , and just cut the 5 inch hole in the regular 3/4 ton cap without a problem . From what we've seen so far , 5 inch holes are what most 4x4 caps have in 62-63 trucks with lockouts.