Gold Lifetime Member
Dr. JW Prentice
Join Date: Jan 2001
Location: Ottawa, Ontario
Re: 1971 Z28- How can you identify true Z28
Look at the trim tag on the cowl. It is located on the drivers side just below the windshiled. You should see either Z28.19 or Z28.10 stamped on the tag.
1971 Z28 Carburetor (780 cfm Holley) - A/T: List 4800, GM # 3989022 | 4 spd: List 4801, GM # 3989021
Transmission & Clutch: Mandatory choice of Muncie 4-speeds & 11 inch clutch. Hurst Shifter. Special 2400-rpm-stall torque converter Turbo Hydra-Matic optional. (Identical to 1970.)
Rear Axle: GM 10 bolt, 3.73:1 Positraction ratio standard. 4.10 available (ZQ9)
12 bolt no longer offered, heavy duty u-joints included with Z28 package.
Brakes: 11-inch, vented, cast-iron front discs with vacuum assist standard. Rear 9.5-inch drums. (identical to 1970)
Front Suspension: Z-28 anti-roll bar 1.0-inch diameter instead of standard 0.6875-inch unit. (identical to 1970)
Rear Suspension: RPO F-41 special suspension standard, including 5-leaf rear springs, 125 lb./in. spring rate, staggered heavy-duty shocks, link-type rear stabilizer bar (unchanged from 1970).
Steering: The 22.5:1 unassisted gear became standard, with variable-ratio power steering now at 15.5-11.8:1 for all Camaros-not quite as fast as 1970.
Wheels & Tires: 15 x 7 steel wheels painted dull grey with bright lugnuts, center caps with blue bow-tie and trim rings,
Wheel Code: AU, Part #: 3983045, Center cap part #: 3989479, Trim Ring part #: 3984524.
F60-15 fiberglass-belted white letter tires standard. (unchanged from & identical to 1970)
It's impossible to have a valid certificate of authenticity without verifying that it is not a rebody.