[Michael C Henry]

I figure that 3.5g pv's I have installed now will be closed earlier in the prosces.I'll get everything under control and get a good baseline for vacum. I figure there is power to be gained by the pv's staying open a little longer. There is a 6 and a 5 stamped aruond the brass disk 90° apart.Very small .I had a problem reading it even with my glasses and good lite.I bought a selection ,in pairs,of power valves ranging from 2.5g to 8.5g from Quick Fuel Technology. I was sure that I could support a 5.5g pv's.I may be able to get 6.5g's pv to close at idle-cruise.the better the timing and the less fouled the plugs the better the vacum.That means that if I get too high a"g" Pv's if it goes sour ,It wiil snowball quickly.