torque converter trashed? (727)

[ToiletDuck]

this is a 72 727. when put into drive or reverse it almost kills the engine and does killl it if i apply the brakes.


thanks for the help

[viper11]

define "kill"
does it slow the motor down till it stalls like dragging or does it run rough and splutter cause that sounds like a vaccum leak if it stalls when you hit the brakes
jason

[ToiletDuck]

Originally Posted by viper11

define "kill"
does it slow the motor down till it stalls like dragging or does it run rough and splutter cause that sounds like a vaccum leak if it stalls when you hit the brakes
jason

it drags the motor down. it tries to keep going forward. I can use the brakes in neutral or park and it does not effect the engine rpms.

This is my first real auto trans (pos subaru dosnt count) so i dont know much about them. i need to pick up the 727 manual.

[John Kunkel]

A failed sprag in the converter will cause a near lockup condition that can kill the motor when the transmission is placed in gear.

A problem with the engine tuneup will do the same thing. Can you keep the engine running if you brake with your left foot and throttle with the right?

[waldo67]

did you stick a big ass camshaft in the engine if so that will cause you a headache

[ToiletDuck]

Originally Posted by John Kunkel

A failed sprag in the converter will cause a near lockup condition that can kill the motor when the transmission is placed in gear.

A problem with the engine tuneup will do the same thing. Can you keep the engine running if you brake with your left foot and throttle with the right?

the engine is running ok but not great, it has been setting for 6mo. 650 edelbrock on a stock 400 bb. the breaks realy suck, drums all around. I made sure using the breaks wouldnt kill the engine in park so no vaccume leak.

I bet your right about the sprag. I just bought this truck so i dont know the history. barly would idle when i got it so i just figured that was killing it. Oh well 500 bucks so no big loss .