1970 Chevelle Engine ID Codes
The engine identification code consists of the engine assembly plant, the engine assembly date, and 3 letter suffix indicating the cubic inch displacement, the horsepower rating, and generally, what type of transmission was to be installed with the engine. Manual transmissions required a bushing in the rear of the bellhousing where an automatic transmission did not. Many engine "accessories" such as the carburetor, distributor, and exhaust manifolds were not installed at the engine assembly plant but rather at the final assembly plant.
|
Engine |
Transmission |
Notes |
||
|
Code |
Size-Carb |
HP-RPO |
||
| CCK | 250-1 | 155 | TH-350 | Taxi, Police |
| CCL | 250-1 | 155 | Manual-3 | Taxi, Police |
| CCM | 250-1 | 155 | Powerglide | Taxi, Police |
| CNC | 307-2 | 200 | Manual-3/4 | |
| CND | 307-2 | 200 | Manual-4 | |
| CNE | 307-2 | 200 | Powerglide | |
| CNF | 307-2 | 200 | TH-350 | |
| CNG | 307-2 | Manual-3 | Low Compression Engine | |
| CNH | 307-2 | Powerglide | Low Compression Engine | |
| CNI | 350-2 | 250-L65 | Manual-3/4 | |
| CNJ | 350-4 | 300-L48 | Manual-3/4 | |
| CNK | 350-4 | 300-L48 | Powerglide | |
| CNM | 350-2 | 250-L65 | Powerglide | |
| CNN | 350-2 | 250-L65 | TH-350 | |
| CRE | 350-4 | 300-L48 | TH-350 | |
| CKN | 402-4 | 330-LS3 | TH-400 | |
| CKO | 402-4 | 375-L78 | Manual-4 | |
| CKP | 402-4 | 375-L89 | TH-400 | Aluminum Heads |
| CKQ | 402-4 | 375-L78 | Manual-3/4 | Heavy Duty Clutch |
| CKR | 402-4 | 330-LS3 | Manual-3/4 | |
| CKS | 402-4 | 330-LS3 | Manual-3/4 | Heavy Duty Clutch/LS3 |
| CKT | 402-4 | 375-L89 | Manual-3/4 | Aluminum Heads |
| CKU | 402-4 | 375-L89 | Manual-3/4 | Heavy Duty Clutch/Aluminum Heads |
| CTW | 402-4 | 350-L34 | TH-400 | |
| CTX | 402-4 | 350-L34 | Manual-3/4 | |
| CTY | 402-4 | 375-L78 | TH-400 | |
| CTZ | 402-4 | 350-L34 | Manual-3/4 | Heavy Duty Clutch |
| CRH | 400-2 | 265-LF6 | TH-350 | (small block) |
| CZX | 400-2 | 265-LF6 | Manual-3/4 | (small block) |
| CRQ | 454-4 | 360-LS5 | TH-400 | |
| CRR | 454-4 | 450-LS6 | TH-400 | |
| CRT | 454-4 | 360-LS5 | Manual-3/4 | |
| CRV | 454-4 | 450-LS6 | Manual-3/4 | |
A total of 39,207 6-cyl engines were installed; 29,791 in U.S. built Chevelles and 10,416 imported from Canada.
A total of 413,255 8-cyl engines were installed; 198,285 307cid, 150,745 350cid, and 64,225 402/454cid engines.
Chevrolet only reports 442,046 engines and transmissions on the Accumulative Production Report of August 31, 1970. This number is only for U.S. built Chevelles. There is no breakdown of engines or transmissions imported from Canada.
