The Jalopy Journal
Could be internal mods. Cushion springs removed from clutch packs , clearance issues or could be a heavy spring in pressure regulator.
Badshifter is right on.
I would say you probably installed the imput sprag backwards
should have said- Some nice cars. Love the Volvo
Not trying to throw a wrench into the works here but did you have the throttle pressure linkage hooked up and operating correctly. I don't know...
is your vacuum line hooked up
I vote 64
I think if you look at the imput shafts of the two transmissions you'll find they are different.
Don't know what valve body you have but make sure you are getting enough throttle pressure. Good luck rest of the week.
If its a 3 speed you can run it without a kickdown cable.
towing with the driveshaft attached has the whole geartrain in the trans spinning. If the engine isn't running the pump in trans isn't pumping any...
Metal line is the best way to go. Buy 5/16 brake line that has fittings and the ends flared. You can get it in 4 or 5 foot lengths. If you don't...
If the pump is the problem trans has to come out to fix it.
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The Jalopy Journal