Hey fellas, I am back, it's been a minute.. I just read the other comments and yes I thought about adding a bigger cooler or going with a tight convertor. Or just switch to a manual trans, ($) now I may have that opportunity because I think I have spun a rod bearing, a few weeks ago, it was my fault, which makes it worse. I stepped down on the gas in 3rd gear and it didn't kick down, I manually shifted to 2nd gear not really letting up off the gas pedal, approx: less than 2 miles from home, by the time i pulled up the engine was making a metal scrapping noise, I knew in my gut what it really was but didn't want to accept it.. Once I went through everything, I determined it was a rod bearing or bearings, Oil pressure was normal, engine ran slightly different and at higher RPM the noise was quieter, so I ordered new bearings but haven't had to time to get it on a rack to drop the oil pan, I also haven't ran it anymore, not wanting to do any further damage, have any of ya'll changed rod bearings while the engine still in the car, in a 68-70 B-body? I know it"s best to pull the engine back out, but I am hoping for the best when I drop the oil pan, if the journals are damaged then I will have to pull it back out, it sucks because it only has 430 miles on a brand new build... What do you guys think? what or how would you go about these two things now? Tranny and now spun bearing???