I bought the cam from Poston , I don't remember who made it. All this makes me want to go back to a stock cam:( The intake manifold is a Buick Edelbrock aluminum one from 1970 I believe. I'm surprised that rebuilding the engine,trans and installing a new set of duals with a hotter cam has reduced my MPG by more than 60% in a two door Skylark instead of a four door Electra . Whoops ,I guess thats the last time I ever do that . Paul. :confused::confused:::confused::confused::confused::confused::confused::confused::confused::confused::confused::confussed::confused::confused::confused::confused::confused::confused::confused::mad: