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Look on the wheel for a Wheel Code next to the valve stem hole. It should correspond to one of the codes in the left column here...
XA 14X5 B-3 1/2 67 Chevy II with drum brakes
DA 14X5 B-3 7/8 67 Chevy II RALLY with disc brakes
DG 14X6 67 Camaro & Chevelle with dics brakes
XB 14X6 B-4 3/8 67 Chevelle SS, 68-69 Chevelle with F-70 Tires, 70 Chevelle
XN 14X6 B-3 3/4 68-69 Camaro & Nova with drum brakes. Different shaped outer
AE 14X6 B-4 3/8 70 Chevelle Station Wagon
XG 14X6 B-3 7/8 68-69 Camaro with dics brakes, 68-70 Chevy II/ Nova with disc brakes, 69-69 El Camino without disc brakes. Wider drop center than normal
DE 14X6 B-4 3/8 71-72 Nova & Chevelle, 6 hole wheels
YW 14X6 B-4 3/8 Exactly like XB, may have come on same cars
YJ 14X7 B-4 3/8 69 Camaro/ Chevy II L72- ZL1, 70 Nova
AV 14X7 70-72 Camaro, 71-72 Nova, 6 hole wheel
XT 14X7 L72- ZL1 Non Rally Wheel
YA 14X7 B-4 3/8 69 Chevelle SS Wheel
AO 14X7 B-4 3/8 70 Camaro &69 Chevelle SS Wheel
DB 15X5 67 Passenger Cars with disc brakes.
DF 15X6 B-4 1/16 67-68 Camaro Z28
DC(BIG) 15X6 B-3 1/2 67 Corvette, No other stampings on rim
DC 15X6 B-3 1/2 68-70 Passenger car, 67 Passenger car (early models)
FI 15X6 B-3 1/2 68-70 Passenger car, 67 Passenger car (later models) Riveted instead of welded together
YS 15X6 B-3 1/2 68-70 El Camino
FW 15X7 B-4 1/4 71-up most any GM
AG 15X7 B-3 3/4 68 Corvette (will take 15x8 Beauty rings)
YH 15X7 B-4 1/4 L72- ZL1 Z28 Rally 69 narrow drop center
AD 15X7 B-4 1/4 L72- ZL1 Z28 Rally 68 wide drop center
AV 15X7 70, 71, 73 CAMARO Z28 5 spoke wheel
AZ 15X8 B-4 69-82 Corvette
This will tell you what the wheels were originally for. This list is not all inclusive by the way.
Are they ralleys or steel wheels? 63-66 Corvette steel wheels are 15x5 1/2 (as were the optional 57-62 wheels). 67 ralleys were the only Corvette wheels ever used in the 15x6 size. 65-66 OEM wheels are "J", and the service replacement ones are "JK"s, I think.
Does anyone have a comprehensive list for regular steel wheels?
My 65 had 15x6 rims with the nubs by the valve stem when I got it...they have a code of FL
I've tried to identify these here and on google and have come up empty.
Those might be the old "8080" Service wheels. Corvette steel wheels didn't have any code stamping adjacent to the valve stem until the 1967 "B", "DC", and "DG" rally wheels. The "JJ" and "JK" stampings referenced above are the SAE rim cross-section design codes, and are stamped in the rim area covered by the tire; '66 rim stampings shown in the photo below.