X-posted fr General forum Found a guy parting out a '72 644A, wondered if it uses same Alison transmission as a 544 (no suffix) of same era?? Believe the 544 used a TT-2220. Did 644 use TT-2420? Is this same transmission w/ larger torque converter? Ayone know if they'll swap? TIA Turntable
from what i remember, the biggest difference is the sprag clutch. should be the same physical dimensions