I was given a 355 8 3/4 sure grip for free, upon disassembly I was told it looked in excellent shape and as if it. was never apart. Had it rebuilt and my mistake was not changing gears at that time
The reason was I had a car with a auto trans and 355 and it was no issue to drive at highway speeds so I figured in this current case it would be ok as well and with the 727 trans and it was
With the 727 i hardly realised the 355 was there
When I converted to the 833 which was also out of a 69 b body the same as my car, the driving experience was day and night and I enjoyed it except for the highway