Something else I found. This time on intake manifolds

autoxcuda said
Geez these nascar intake very similar per manufacturer. There seems to be a restrictor and open motor version of each at minimum. The pics below are probably not apple to oranges.

Ford
Toyota
GM

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I sure wish chrysler would have made spread port heads for the r/b wedge engines , then maybe they`d have bigger flow, closer to the rat heads , maybe even staggard valves .