th400 second gear intermitent

gmonde · 05-04-2009, 06:28 PM

transmission guys:
last week had my th400 transmission miss second gear several times ,but it was intermitent to where i was able to get 3 full passes out of thee eight atemps(you could feel it hit and then the motor hits the chip) ,get back to the pits and put it second and the gear held (flash the converter to 4000 in second) sometimes work and sometimes not,take the trans out bring it to my builder and tear it down,the trans is perfect no clutches burned,fluid red,checked the spags (witch i thought for sure would be the problem) but they look ok
my questions:can a sprag roll over and not break the outer race,is it possable that it could just not lock up
is it possable the converters sprag is bad and note the converter has only 4-5 % slipage

full manual tci valve body

any help would be greatful gmonde

05-04-2009, 06:28 PM	#1
gmonde Senior Member Join Date: Nov 2007 Posts: 615 Likes: 56 Liked 165 Times in 59 Posts	th400 second gear intermitent transmission guys: last week had my th400 transmission miss second gear several times ,but it was intermitent to where i was able to get 3 full passes out of thee eight atemps(you could feel it hit and then the motor hits the chip) ,get back to the pits and put it second and the gear held (flash the converter to 4000 in second) sometimes work and sometimes not,take the trans out bring it to my builder and tear it down,the trans is perfect no clutches burned,fluid red,checked the spags (witch i thought for sure would be the problem) but they look ok my questions:can a sprag roll over and not break the outer race,is it possable that it could just not lock up is it possable the converters sprag is bad and note the converter has only 4-5 % slipage full manual tci valve body any help would be greatful gmonde