Keith Wilson has chromed two four barrels on his 427.
Big in the wow factor anytime you raise the hood. He has tuned his so they run good on the street. Two 390 cfm carbs are best but he has a pair of 600 or 650 because they did not sell chromed 390's. He told us what he did to de-tune them but I'm a Fuel Injected guy so it was over my head. I think Coach Mike understood.
I had talked to buddy of mind who rebuilds carbs last year about smaller jets in a 750 for a 351. He said you would lean out the engine. But he did say a restricter plate would work. You know, like Nascar. You have to keep the air to fuel ratio correct.
Dwight