1970 BB fan clutch date code
Another question has come up on the '70 BB auto non-a/c coupe we are restoring. The fan clutch, which appears to be correct, has a date code of 5 5 70 SC. The engine was assembled on 4/16/70 and the car build date on the trim plate is June 4, 1970. Does it ever happen that the date on the fan clutch is after the engine was assembled but before the car was built? I've only worked on 2 other C3 Corvettes and, in both of those cases, the date on the fan clutch was before the engine was built, so that's why I ask here. I looked through the archives but I didn't see an answer to my question. And I haven't been able to find anywhere in the Judging Manual that addresses this. Thank you! Randy C.
-
-
Re: 1970 BB fan clutch date code
Randy,
The fan clutch was installed at St Louis and depending on supplies/delivery of engines and fan clutches could have been made before or after the assembly date of the engine. In judging Corvettes we use the approximate assembly date of the car (for C3s from the body trim tag) and consider that all the parts have to be (in almost all cases) dated prior to the approximate car assembly date. The relationship of the engine assembly date and the fan clutch assembly date is moot. The same applies to the other parts installed at St Louis. That is for example, but not limited to: carburetor(s), starter, alternator, transmission and so on.
BTW: One can tell what parts were installed at St Louis (or more accurately the vehicle assembly plant) by looking in the AIM (Assembly Instruction Manual). If the part is listed in the AIM by part number then that part was installed at the vehicle assembly plant.Terry
Comment