700r4 shift issue : 2nd to 3rd slow

[JBreu]

Here is my dilemma : I love the 700r4 transmission I put in this year and think the o/d transmission is the way to go...Hers is a question I hope someone can shed some light on..When in automatic mode all the gears shift well, or at least from what I can tell. When I shift manually from 1st to 2nd the shift is firm and dead nuts...now when I shift from 2nd to 3rd there is a delay or lag....I mean when I put the shifter into 3rd, it seems like at least a second or two goes by before it shifts into 3rd ...BTW, The T.V. cable is properly adjusted. Any ideas??? I think the valve body might be the culprit?? BTW, There is no shift kit in the car...The transmission is less then nine month old as well...Any suggestions????

 

[t5montecarlo]

You forgot to mention the rpm at which you are manually shifting. The transmission will not shift early just because you moved the shifter; it will not upshift until reaching the same rpm as when left in D.

 

[DOUG213XRJ]

Does the RPM go up inbetween shifts? maybe a boast valve change.

 

[JBreu]

Aat the track I sh*t it at 5500 rpm's.................Yes the rpm's continue to go up until it finally shifts....Not a spike in the rpm's though.....

 

[t5montecarlo]

what rpm does it shift into 3rd when leaving it in D from the start?

 

[JBreu]

NOt 100% sure on that........I think less then 5500....Car is tucked away in the garage for the winter or I'd check....

 

[DOUG213XRJ]

My 89 1500 would slip (Transmission guy called it a flare up) when shifting from second in to third, Form half throttle on. A bigger boost valve and I think a corvette servo fixed the trouble. Doug