i have heard different opinions and it varys in different cars.they are supposed to stall 3600. i just bought a new NL billet 9" N stall from ac(cpt). it stalls 2700-2800 @ 0 psi and goes up about 100 rpm per psi of boost(3700-3800 @ 10psi). might be a tad loose. be careful what you use for the rpm readings. i thought the stall was very loose using an old auto meter tach. it read about 700 rpm higher than it should(4500 @ 10 psi) i then checked it with my FAST data logger to get the right readings..
what tach are you using? if i read from the auto meter tach im at 3500 rpm @ 0 psi also.
which rpm reading is correct, the auto meter gauge or the FAST system? i wish i knew but art did say i should be about 3300-3400 rpm at 10psi, therefore id have to say my tach is out to lunch.
auto meter=4500 @ 10psi
FAST system=3700-3800 @ 10psi (a little higher than art predicted).
my 2nd-3rd shift drop was about 400rpm with my previous a/c convertor, which was about 2-300rpm tighter than this new one. winter weather hear therefore i cant test the car at wot with the new convertor yet.