Finally got a chance to look at that GM intake I have. It is a 283/327 4bbl manifold for 62-63 Corvette. Is this a standard bore and pattern size? Seems narrow, but might be an optical illusion.
The manifold is just like this one
http://i.ebayimg.com/images/g/KCsAAO...OP/s-l1600.jpg
I'm going to have to ditch this thing, aren't I? Looking like I'll have to run an adapter. I hate adapters. If so, any recommendations on a nice dual-plane intake to run with a Edelbrock 1403 with either of the cams we talked about above?