Join Date: Sep 1998
Location: Toronto, Ontario, Canada
I'm looking at the specific '68 Z28 brochure and it states that a 4 speed is mandatory: either the M20 or M21 at $184.35 or the M22 at $310.70. For the record, 3.73 open rear end was standard, but you could get 3.07, 3.31, 3.55 and 3.73 with or without Positraction; you could also spec 4.10, 4.56 & 4.88 with posi only. Stripes, called 'Special Rally Striping' were included. Spoilers were there only if you wanted them. Gauges were not standard. Also, fast-ratio manual steering (21.4:1)was included; 17.9:1 extra-fast steering was optional as rpo N44. Power steering was also offered in fast and extra-fast versions. Something else to look for is hangers for dual mufflers ahead of the rear axle. Z28s got them instead of a single transverse muffler just the behind the axle. Dual mufflers were a very common owner-installed upgrade, so the presence of them doesn't mean a Z, but lack of it indicates something fishy. Z28s got a 5-blade thermostatic fan standard and a dual-belt fan drive. Correct valve covers are smooth chrome without lettering or oil filler cap. Power windows, as unlikely as they are, could be ordered on a Z28. Let's hope you got lucky, as a '68 RS Z28 is BOSS!