Measure the port size. GMC large port size was 1 3/4 inches, whereas Chevy was somewhere in the 1 3/8 to 1 1/2 inch range. Also, Chevy measured 8 1/2 inches from center of port to center of port.
They also made them for various size Chevies. Had a 2 carb manifold on my babbit pounder 216 in 1959.
Quote: <TABLE border=0 cellSpacing=0 cellPadding=6 width="100%"><TBODY><TR><TD style="BORDER-BOTTOM: 1px inset; BORDER-LEFT: 1px inset; BORDER-TOP: 1px inset; BORDER-RIGHT: 1px inset" cl***=alt2>Originally Posted by Bob K I have 3 carb McGurk manifold. Did they only make GMC stuff or could this be for a Chevy? BB </TD></TR></TBODY></TABLE> If ya bring it down where we could check to see if it fits my 235??? <!-- / message --><!-- sig -->__________________ Sock ****ers CC because we can do it ourselves as often as you go by my house on your way to the lake you could stop and see it. BB