I hate to come out and say this but something is terribly wrong with this combo and the convertor is probably a BIG part of it.
NO-ONE be afraid to say what your thinking...I'm asking for help and won't get offended.
I think you hit the nail on the head.
I attempted on the 3rd pass to bring the RPM's up against the converter having a bad feeling my old 750 would stumble.
I looked down at the tach and in trying to tighten everything up knowing that I should be able to get to maybe 3K I noticed it was trying to spin like in the burnout box. I dropped it back down to an idle and left and sure enough it stumbled.
The converter is 36 years old...but not used at all for probably 25 of those years.
Like I said before I used a lot of old stuff I had laying around. I only spent $600.00 on this engine less the heads, headers and distributor. I sent this converter out before using it because of a cracked pump snout...the bolt holes were b!tched up where it bolted to the flex plate also. I got it back in an all new housing for 180.00...I have an idea its nowhere near a 3500 any more. Maybe that explains why I never noticed any slippage with the 3.23's as I thought it may slip some...
To be honest I doubt it gets changed out unless he talks me into 3.91 gears all the time rather than 3.23's. Would going to say 4-4200 be a problem on the street with a 3.91 gear?
