Well there is the phrase "Spread bore carburetors" in the thread title... lol
There's also the reality that ThermoQuads don't work well on low-vacuum big-cammed engines like the OP is talking about anyway, without lots of mods at least. I love my TQ on the stock 318 in my 1988 Fifth Avenue. Would I use it on a built engine? I might try it just for fun... as long as it didn't require an adapter on the manifold. But I probably wouldn't considering I have a nice barely-used 750 cfm Street Demon ready to use lol.
