Rob, the answer is yes, spreadbores. The green Sedan (Green Machine or GM) has a Carter. Its the one where the secondaries do not have venturies, just some needle deal that goes across (I am not sure if this is aftermarket, but the car came with a Holley form the factory). The secondaries are mechanically opened, but there is a spring loaded flapper over the secondaries which is opened by the air flow (doesn't take much to open it). This car has an Ederblock CH4B. This manifold has been discontinued long time ago, but according to some hot rodder Mopar magazine, its supposed to be very good for high speeds. The black LeBaron has the stock iron manifold (the engine is from a 69 New Yorker) and has an unusual Rochester which is even more spreadbore than the other car (ie the primary/secondary throttle size difference is more pronounced). This carb (also mechanically activated secondaries) is for GM products, since its box (which I still have it, the original Holley is in it!) says GM on the outside. D^2 At 05:49 PM 7/11/2002 -0400, you wrote: >D2, >Both your Imperials have spread bores? What intakes do you have? I'm >mostly familiar with 70-71s, but I thought they mostly came with the >Carter AVS. I know some came with Holleys, but your spreadbores are an >aftermarket thing, right? >ROb