k10 tranny

[chevy_k10]

hi, i have a 1984 chevy silverado swb k10.it has a 305 and it is a 4x4 the guy im buying it from says the transmission is stuck in low(not the transfer case) what can this be?what can i do to fix it?and im not sure what type of tranny it is do you have any hints?

[karll]

check the linkage. mine would get stuck in gear some times so i took it to my local shop and the adjusted the linkage and now it works like a charm. as far as what transmission you have, im guessing th350 maybe th400.

[chevy_k10]

i just found out what he did to it.He was hauling some gravel to his house and he came up on a bridge so he got off the gas and then stomped back on it so it would down shift now its stuck there?what happened?its a 700r tranny 4x4 or 700r4(if there not the same thing)

[karll]

not familiar with that tranny, he must have dropped a new one into it during his ownership. as far as it being stuck into low i'm not sure what to do. my best advice would be to take it to your local shop, and take is slow.

[TEXAS-HOTROD]

The 700R4 uses the kick-down cable to control when it shifts. Grab the cable and work it in and out rapidly a bunch of times while it's idling. See if it retracts all the way in like it should. If it works ok, it's probably a stuck throttle control valve. Usually when the throttle valve sticks, there's other problems in the tranny (like metal in the fluid).
Pop the side cover off and remove the governor. Hold it w/the gear pointed upwards and flip the counter weights in and out. Look at the control valve in the center and see if it mooves up and down. If not, knock out the pin in the gear, remove the gear and pull the center spool out and clean it.

I hate to say it, but if he was hauling a load of gravel and dogged the thing, he probably hurt something internally. 700 trannys weren't too durable until GM updated them in 1988.