this is one that i could use some other head scratcher problem solvers input on. ok-this is intermittent-very- see sig for the vehicle in question-occasionally on take off\last time it was during a fry run testing boost, though, i step on the gas and give er 3/4 pedal-kind of working the motor, and the transmission-i think-seems to stop transmitting power thru it to the d-shaft, and what i get is a fairly violent shudder and noise, dont know how i have lifted throttle fast enough, followed by a normal re-engagement of power flow thru the trans. as if nothing has happened. i believe it happens in 2nd gear but the car will spin all 4 gears if punched from a standstill, i have been unable to verify 2nd gear only maybe it happens going 1-2 upshift or 2-3 up. i know that dosent help narrow it much but any input is welcome-i have studied exploded views of 700 and it seems that all power is transmitted thru the front sprag 1st thru 3 anyhow-could this "let go" under load and re-engage when the load is off/shouldnt it just grenade the one time it lets go? thanx frank

I'm by no means a tranny expert, but start simple: How's your tranny fluid level/condition? Wish I could help more, but you read the first line of this reply.

ive covered the basics, pulled pan, metal check, tv cable, fluid quality and quantity, checked for anything hanging up in the v.body, pulled diff cover to see if cones were slipping on the posi unit ,replaced synthetic gl-5 with conventional i dunno-yet- thanks though

"full art carr worked 700"

Need I say more?