Hello K code experts. I have a question that hopefully someone can answer. In reviewing Tony Gregory’s 4th edition, I noted that early k codes were built with predominantly 3.89 gear ratio code 8 with code 5 3.50 being non existent until much later. Then around Oct 1 64, there was an obvious switch to code 5 being the predominant over code 8. Code 9 is rare in both cases but even more rare as production progressed. Does anyone know why? Were too many K codes blowing up? Did this correspond with a level change? I’d be interested to hear what you guys think.
Thanks
Bartman.