Is my tranny Slipping or No??

jstang209

20+ Year Stangneter :roc</strong><span class=
Jun 3, 2004
640
2
18
Stockton 209
when i punch the gas the rpms go all the way up without the wheels! but then its drops back down to where its supposed to be, i dont think its my tranny slippin bc wouldnt the rpms stay where they are they the wheels kick in and ill be screechin?? Hope this is a good enof explanation.. Plz Help, thanks.