Ron,
i sealed my carb to the six pac hood and picked up nearly a 1/10 plus @.5-1mph.
funnily enough over the last 2 months after taking a little weight out and improving suspension i decided to play with the jetting.
up 1 jet front down 1 jet rear.
went from 11.52 to 11.41 and picked up just over 1/2 mph(118.56)
i went this way jetting as i had a light
stumble@light throttle on the street and i knew it picked up in the cool air.car had been jetted to 12.2/4AFR on the dyno
will be racing the Nostalgia Nationals here in Australia this weekend.650mile drive each way - none of this girly towing stuff.
Hoping to run real fine
Tex