transmission

would like to thank you guys for helping w a temporary fix to the ol ltd, have been having problems for awhile w tranny not wanting to go into gear until after in drive for about 10-15 seconds, shifts fine afterwards, have a feeling that's going to go also, changed the modulator earlier about 6 months ago shifted fine after replaced it, not for sure if replaced the hose..... gonna do that first, going to service the eng along with the transmission and diff but any suggestions on a temporary fix like the eng. if the hose trick doesn't work or am I screwed, think it maybe has a c6...... not for sure though what trannys came in the 77 year? thanks nate