Shifting at 4600 rpm?

I understand that there are higher rpm governers available,but i have never needed one.
You are correct about the governor though.BUT.....
I always shift my (67 coronet) manually when raced,like i said ,but when i did let it shift in drive, at 6200 rpm's ,it was a modified transmission(ger) ---But i don't think they changed the governor.(67 coronet)

My new dynamic transmission i use now ,has no kick down linkage,because it has a full manual valve body.

CUDA
When i set the linkage up to shift, with my latest transmission with my cuda,at 5500 rpm's in drive, it was with a stock valve body.
Again, i never bought a higher rpm governor.
I will call my buddy,who built it for me,and ask him if he did any thing to the governor.
I also told you what i did back in the day and never had a problem, but could it be i was just lucky not to have gone past what the governor had for max rpm's in all my transmissions????????
I was just shocked to hear about such a low rpm shift point in your car and since i have never had such a problem,wish i could tell you how to fix it.
but i guess,,, fishy68 has the info on this one down.