Crankshaft

Chevrolet crankshafts have a casting number located on the rough surface of one of the counterweights or between the bearing journals. Standard performance used cast (nodular iron) cranks, while high performance engines used forged steel cranks.

Casting
number		 Year Engine Construction Main
journal		 Rod
journal		 Stroke Notes
1130 1968-69 327 forged 2.45 2.10 3.25
1182 1967 350 forged 2.45 2.10 3.48 SS350
7115 1965-69 427 forged 1-4: 2.7495
5: 2.7488		 2.20 3.76
3804816 1965-69 396 unknown 2.20 3.76
3814671 1968 327 forged 2.45 2.10 3.25 hi perf, HD truck
3815822 1967 302 forged 2.30 2.00 3.00 Tuffrided, special flange, Z/28
3856223 1965-69 396 forged 1-4: 2.7495
5: 2.7488		 2.20 3.76 1965-66 all
1967-69 hi perf
3863144 unknown
3874874
3884577 1966-67 327 forged 2.30 2.20 3.25
3892690 1967 350 forged 2.45 2.10 3.48 Camaro only
replacement
3904815 1965-69 396 cast 1-4: 2.7495
5: 2.7488		 2.20 3.76
3911001 1968-73 307/327 cast 2.45 2.10 3.25 replacement
3911011 1968-69 307/327
3923279 1968 302 forged 2.45 2.10 3.00 Z/28 only
3932442 1969-85 350 cast 2.45 2.10 3.48 replacement
3941178 1969 302 forged 2.45 2.10 3.00 Z/28
3941182 1968-76 350 forged 2.45 2.10 3.48 replacement
3941188 1969-71 350 forged 2.45 2.10 3.48 hi perf/truck/
replacement

These are cranks that would have been used in Camaros as either standard or replacement during the period. There were other cranks used in Chevrolet engines which may have ended up in your motor if it's not original. If you do have a crank with a number not listed here, you can find it in "Chevrolet By The Numbers" by Alan Colvin. Find out where to get it on the books page.

Alternator Axle Camshaft Carburetor
Connecting Rod Crankshaft Differential Distributor
Exhaust Manifold Intake Manifold Piston Transmission
Water Pump      
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