Reply to thread

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

Message: <blockquote data-quote="AApple" data-source="post: 100485" data-attributes="member: 56">:headscratch: I haven't really been following all these different threads on similar subjects, but I took the time to read thru this one, and am wondering just what the heck is it that you are trying to do/find?A venturi is meant to speed up air as it passes a point.A choke is meant to decrease the amount of air.If what you're attempting to do is get a fast intake charge into the head, why not stick a vacuum gauge fitting on the intake runner right at the head. The original runners have one already...the one used for synching the carbs. On your spiffy grab rails, you would need to drill into them for that.The point being, take a measurement at the head, do a mod on the runners coming from the intake manifold, then take another reading. The higher the vacuum signal AT the head, the faster the air/fuel mixture is getting into the combustion chamber. If the vac reading goes down, you went the wrong way with the mods. Would this not be an easier, quicker way to determine which mods worked, and which made it worse? :headscratch:</blockquote>