TH400 Won't shift into 3rd!!!!
Hey guys I am experiencing some issues with my th400. First I have well over 200 passes on the transmission and it came with the car when i bought it, so I knew it was going to happen sooner or later.
When I am at WOT making a pass it will not shift into third gear. I manually shift the car at right around 6000 rpms. When I hit the shifter the rpms just keep climbing and no shift, it seems as soon as I let off of the gas a little it seems to go into third.
I made some more runs and it now seems to also be hesitating during the 1-2 shift also, it takes maybe 2-3 seconds for the tranny to actually shift after I bang the shifter....
I have checked most of the obvious stuff, like shifter linkage, fluid level, I pulled the vacuum line off of the modulator and there is no fluid on it, vacuum reading on my gauge has not changed.
Any other suggestions before I have to pull the tranny, should I check the governor, or maybe change the vacuum modulator????
I really do not know too much about transmissions so thanks for your patience and any input....
1968 300 deluxe
15.9 @ 88.0 mph
1968 mailbu (383,th400,12bolt/posi)
13.52 @ 101.84 mph
"Just about the stupidest thing you could do, is to try and move a big block with your shoes untied."
"IF YOU HAVE A RACE CAR BUY RACE CAR PARTS"