Posted by Bill on January 22, 1999 at 12:49:34:
I know Edelbrock makes 2 squarebore manifolds for the Vortec heads...a Performer & a Performer RPM. Does GM or any other company offer a spreadbore intake manifold for Vorec heads...I know I can drill the heads to accept another style of intake, but I'd rather buy a correct one instead.