Project 6-71 340 Demon

Not as badassery as you might think. I am having a hell of a time getting this tune. I started out way to rich, I mean top fuel dragster rich. I traced it down to a couple of problems. A bad metering block and a bad fuel regulator. The fuel pressure was bouncing like crazy between 5 and 9 psi. I dropped in a different metering block and it helped. I swapped out the regulator and now the fuel pressure is 5 psi and rock solid.

My problem now is, it is way to lean. I mean off the scale of the A/F gauge. I can't get the idle below 2500 with out retarding the timing way back and then it back fires out the intake. Sure am glad I put that backfire valve in.

I am working on it and hopefully I will get it before Friday so I can go to the Nats.

Jack