trans not wanting to shift before engine rev's out
please help
jerry
when i first start out it revs to about 5500 before it shifts really hard out of first to 2nd then it goes to about 5000 to 5500 again before it will even attempt to shift to 3rd but it always sounds like its wound out and in 2nd its gotta get up to about 60 to 70mph before it is even close to shifting.
the only things i have on this trans am is slp headers, y-pipe and cats. air lid and 160 thermostat.
i am just really lost and almost to the point of putting the stock headers back on it just to see if it fixes the problem.
if you can think of anything else i will be very thankfull
thanks.
jerry

