Magnetic Pulse DistributorsThe initial offering for the TI distributor on Camaros was PN 1111267 for the 1967 Z28. Essentially it was a regular iron-housing, mechanical-tach-drive, TI distributor with an appropriate advance curve to suit the 302 CI engine. The specifications were 14 degrees maximum mechanical advance at 2300 RPM (distributor degrees and RPM). It had a vacuum advance feature that most racers did not utilize. The 267 distributor was one of the distributors recommended in the Heavy Duty Parts listings and Chassis Preparation Sheets and was available from November of 1966 up to the An alternative distributor was also listed. This is the highly prized ball bearing distributor PN 1111263. This heavy-duty version was initially released for the reverse-drive camshaft 427 big block racing engine. It has a special ball bearing on the upper part of the mainshaft instead of the usual bronze bushing. This distributor has an iron housing with a mechanical tach drive and has a special reverse-drive distributor gear that permitted clockwise rotation of the distributor in this special 427 engine. It specified 13 degrees maximum mechanical advance at 1900 RPM. This distributor did not have a vacuum advance feature; the plate inside the distributor was fixed in position. (This distributor was still listed in the 1991 Chevrolet parts books, for The 263 distributor required two changes for use in the small block 302 engine. First, the provided drive gear was replaced with the standard drive gear. And second, the lower oiling channel on the lowest boss was extended full circumference. (As supplied by Chevrolet, the lower oiling channel traversed only 3/4 of the circumference; if not fully grooved - like the standard small-block distributor - the oil passage that feeds the right-side camshaft lifter bank could be blocked, resulting in immediate engine failure!) In addition, it was often desirable to revise the provided advance curve to better match a given application. (Most racers changed the advance curve anyway.)

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