i know, the standard for an LS is 199, with a factory specified minimum of 140 and a deviation of 28, but i would never want to run a motor with 28 PSI difference...

anyway, i got the motor from a kid on here, who said he worked at a machine shop, told me it was completely rebuilt, and seemed credible (i'd done business with him before). its been idling bad since i got it, and the freakin IM gasket was a gasket-makered used one, so the kid is obvously full of shit.

needless to say, i will never run a motor i didnt build myself again

thanks again for the help.