What should the fuel pressure be on my 89 GTA at the fuel rail ? The engine is an auto, 5.7, (350) TPI original. Is this pressure to be at idle or at a certain rpm ?

And can someone help clear up the LT1 vs. LS1 and the L98 engines ??? They went by the years didn't they ? Me and a bud go back and forth on this..

Thanks in advance everyone...This will sure help clear things up..