If the tranny shifts the same all the time, I would also look at the vacuum feed to the tranny. Check the modualtor for oil where the vacuum hose attaches. No oil should come from the niple where the vacuum hose attaches.
Also check the detent cable from the carb to the tranny. IF it's not hooked up, check the cable to see if it is pulled, stuck , melted or something. This will tell the tranny you have your FOOT into the engine and the tranny should shift late.
Are you working with part throttle shifts or WOT shifts?
Originally posted by Big86inthestixx
Can someone please give me some ideas on how to prolong the shift from 1st to 2nd gear? Also i know that i can adjust 2nd to 3rd gear with my modulator but is there any other ways to prolong the shift? The tranny im working on is a TH350, with a B&M shift kit.