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Below is a listing of common identification numbers for the 1976 Corvette including engine block, head id, casting numbers and more.

Vehicle Identification Number
1Z37L6S400001 - 1Z37L6S446558
Digit Definition
1st 1 = GM Division = Chevrolet
2nd Z = Series = Corvette
3rd/4th Body Style:  37 = Coupe
5th Engine Type:  L = L48, X = L82
6th 6 = Model Year = 1976
7th Assembly Plant:  S = St. Louis, MO.
Last 6 digits Production Number starting with 400001 - 446558.

Engine Suffix ID Numbers
CHC: 350ci, 210hp, (manual transmission)
CKC: 350ci, 210hp, (automatic transmission)
CKW: 350ci, 180hp (manual transmission)
CKX: 350ci, 180hp (automatic transmission)
CLS: 350ci, 180hp (automatic transmission, California emissions)

Block ID Numbers
3970010: All Engines

Head ID Numbers
333882: All Engines

Carburetor ID Numbers
Rochester Q-jet #17056206: 350ci, 180hp (automatic transmission)
Rochester Q-jet #17056207: 350ci, 180hp (manual transmission)
Rochester Q-jet #17056210: 350ci, 210hp (automatic transmission)
Rochester Q-jet #17056211: 350ci, 210hp (manual transmission)
Rochester Q-jet #17056226: 350ci, 210hp (air conditioning, automatic transmission)
Rochester Q-jet #17056506: 350ci, 180hp (automatic transmission, California emissions)
Rochester Q-jet #17056507: 350ci, 180hp (California emissions, manual transmission)

Alternator ID Numbers
1102474: All with air conditioning.
1102484: All without air conditioning.

Distributor ID Numbers
1103200: 350ci, 210hp (manual transmission)
1112888: 350ci, 180hp
1110908: 350ci, 180hp (automatic transmission, California emissions)
1112905: 350ci, 210hp (automatic transmission)