have him pull the valve cover, set the crank timing mark on 0* then post a picture of the cam timing.
Cam gear is set at 2 degrees retarted
distributer is 0 degrees with vac advance off
set the cam at 0* dead on the money till further notice.
why is the distributor at 0*?? it needs to be at 8*
having the weber, aftermarket cam, and a header going into a stock muffler is like building a monster truck like this
http://www.youtube.com/watch?v=6djxQ0a5Jqg&NR=1cut the dang stock muffler off and run some 2 1/4 tube from the header to a muffler of your choice thats 2 1/4 inch in and 2 1/4 inch out into a tail pipe that at least goes past the rear axle.
get that done then we'll attack cam timing and weber jetting.