First off, any and all help is appreciated for the newbie.
I'm using the stock trans and converter on my s10 blazer swap and have just recently been going for short trips/ironing out issues. From a stop/or low speed, it seems to upshift just fine(though the 1-2 seems a little slow). However, when I'm running around 40-50 mph, and go WOT, the log says it's commanding 2nd, but my RPM will spike and just hit my rev limiter like it's refusing to go into 2nd?(these events happen about 14min 20s into the log and I kept doing it for a while). If I let off the throttle, it shifts back up just fine. Higher speeds seems to downshift as they should? I've looked, but do I have something out of whack in my shift speeds?