Originally Posted by To Many Mustangs
As I understand it, the 302's bore either an "F", "J", "M" or "K" for the motor code in the VIN depending on the performance of the engine.
Okay, time for engine code school (brief summary related to 289/302)
A - 4 barrel 289 - regular fuel - used from 64 thru late 67
C - 2 barrel 289 - regular fuel
F - 2 barrel 302 - 68 thru 79!
M - This is 351 engine, either Windsor or Cleveland - used 69/70 - not 289/302
K - HiPo 289 - premium fuel - used from 63 thru late 67 - solid lift cam only
Originally Posted by 2MM
The block casting numbers are C80E 6015A
The head numbers are 302 4V 7M4
The carb is a #4100
The intake manifold I have to go with it reads C6OE-9425B 6F29
So, what's the real story here? Someone please let me know.
C80E - 6015-a factory casting for 289/302 blocks...67 and 68 (and Tim, there are 302 blocks cast as early as May 1967, when 302 weren't even available yet...)
302 4V - obvious
7M4 - 1967, November 4th (alphabet, skipping "I" which can be confused with "1")
Carb - 4100 autolite - looks like a 2 barrel autolite, but with secondaries - I rebuild these/have several, looking for more
C6OE-9425 B - standard 4 barrel intake for small block 289/302, B designates late change in design, and date code June 29, 1966 (which is correct for any 68 model year car, as most Ford parts are built/cast months ahead of vehicle being produced, usually 60 to 90 days is the norm)
*SIDENOTE* - A UAW strike in August, 1967, delayed engines being supplied to Ford, shutting down assembly lines...many 68 models were delivered late as a result, and/or have peculiar items installed on them...
Example: I own an August built 1968 Fastback with factory installed A/C, yet has correctly dated coded radiator for a non A/C car
, as well as a factory deluxe interior (yet, I do not have a woodgrain steering wheel rim, yet it DID come with a standard red rim steering wheel with a deluxe horn pad (documented my an MCA judge)...all this lined up with the fact my car was built on the day the strike ended
(most likely throwing parts together to complete cars and get the line moving again, thus producing the "factory freak" I now have...