[tom hand]

Unless you have a motor that spends most of its time at a drag strip, I would be using the torker manifold for a doorstop. With a mild cam, stock compression, etc they really suck. You would be better off with a stock manifold. As a bandaid you can run a bunch of timing with a single plane manifold, proably more than the starter will tolerate. That might get your gas mileage back up a little