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Hello 700 R4 behind a olds 455 500 hp jukebox on wheels. While sitting at a traffic light sounds like sand in a rotating drum and it pulsates while approaching the traffic light.
History; This is a monster transmission that maybe has 4000 mile on it, at 2000 miles it started hard shifting no matter how I would adjust the tv cable. A local shop went through it and it’s been fine for another 2000 miles till this happened. Which is, I was playing with my timing advance curve on my MSD distributor trying different springs and stops. I would try different configurations, write it down and take it out and womp on it a few times. That's when this noise and pulsating started. Any suggestions would be appreciated. Update: torque converter failed shavings throughout. I'm done with 700r4's and ele. lockup torque converters. Looks like turbo 400 for me.
Thanks Oldsmobilejim
Last edited by oldsmobilejim; Aug 5, 2020 at 01:08 PM.
Reason: update
Tranny noise
