Don't mean to highjack the op thread, but does the quadrajet work on the sbm? What dual plane intake manifold will a spreadbore fit without a adapter if possible? Thanks guys.
Of course they work on a SBM. They were factory equipment in the early '80s or so when Carter was having troubles.
Spreadbore dual plane? There's the factory cast iron manifold, Eddy Performer, later issue LD340, a bunch of MP M1s, Weiand Stealth, and on and on...
No idea why you'd want to willingly run a Quadrajunk though, maybe on a dare... Stick with a TQ.