In the 1980’s I did the same thing on a 440 but I saw the oil pressure doing something funky on a 10 second pass so I loaded up the car and took it home. I had an open trailer with an open deck so I pulled the pan and started pulled main caps. I found the stock 440 crank broke in half so after work on Monday I unloaded the car, pulled the engine while my local speed shop did a crank for me. The hardest part was working a full time job in the mill and then replacing the crank but I had it rebuilt and made Friday nights point race. I did need to call on two friends to hold the rods back as I lowered the crank in. I wouldn’t do half the crazy stuff today that we used to do. But we sure had fun.