[Coloradocobra]

Hi Wayne,

It runs about 10 inches vacuum at idle. I have a 6.5 power valve and the power valve circuits were leaned out for altitude. Evergreen Performance Systems did the last dyno test/tune. Walt Hane is an old Ford engineer and campaigned Shelbys way back when. They checked the timing and the optimum settings they got were at 32 degrees. Walt and his son Chip know Fords and our altitude so I would be surprised if they got it wrong.
The engine builder's calc's also indicated 32 as optimum.

When I bump it, I get into starting problems. It has 20 degrees mechanical advance so when I go to 36 or 38 total it wants to kick back. What do you suggest/recommend?

Thanks,

Gary