A Buick engine is stamped with two different identification codes. One is the engine production code which identifies the engine and its approximate production date. The other code is the engine serial number - it matches the VIN (vehicle identification number)
F 12 07 SB
0 H 12 3456
F = Flint
12 = Month
07 = Day
SB = Trans. or Option usage
0 = Year (1970)
H = Flint
123456 = Production Code
- The 250 CID OHV6 engine number and production code are on the right side, to the rear of the distributor.
- The 350 CID V8 engine number is on the front of the left bank of cylinders. The production code number is between the left exhaust manifold and the two front spark plugs.
- The 455 CID V8 engine number is between the two front spark plugs and the eshaust manifold. The production code number is between the two rear spark plugs and the left exhaust manifold.
Engines available as indicated :
- Skylark and 350 - SA,SO,SB,SP
- Sport Wagon and Skylark Custom - SO,SB,SP
- Skylark GS - SP
- Skylark GS455 - SR,SS
- Estate Wagon - SF
- LeSabre and Custom - SO,SB,SP
- LeSabre Custom 455 - SF
- Wildcat Custom - SF
- Electra 225 and 225 Custom - SF
- Riviera - SF