the carbs are mounted sideways . seems rich at idle with 73 primary but lean while driving. plugs look ok but not rich. no idea on vaccuum, should i check it at idle or 2000 . boost varies when i wack the throttle it goes up but on cruise even at 3000 no boost has to hit 4000 to make it . atleast at the gauge . could be the hose. i am gonna check the blow off valve it may be leaking boost and sucking vaccuum.
the tooth count is 63 top and 52 bottom with an 8 mm drive .
i am gonna jet it 80 in front and 90 in rear tomorrow to see if that helps. again i think it is really lean.
what is the optimal egt temp it should run. thanks againofr all your help in advance, justin