Theoretical transmission upgrade P-30 454
I have a 1989 Mallard Sprinter with the Chevy P-30 set-up. 454 engine, etc. Runs like a champ and I love it. If I really got a wild hair and wanted to replace the transmission with an overdrive tra...
Forum Discussion
What transmission do you have? Three speed Hydra-matic 4L60 or 4L80 four speed?
If you have the three speed just upgrade to the four speed.
If you have the three speed just upgrade to the four speed.
