Topic: Blower Box vs Hat - Discuss
Not for the next race, but by next year I hope to have a supercharger to cram air into the log intake manifold that all Ford 144/170/200/250 straight sixes are blessed with from the factory. It literally part of the cylinder head. So the question is, do I attempt to just blow down the throat of the carb (or carbs by then) or do I build a box and try to seal up the linkage. I was leaning toward a simple hat and screw any boost that leaked past the throttle shafts because of the kick down linkage. In order to put make a carb-in-a-box I'd have to either say screw the kick down linkage for the C4, or fabricate some sort of sliding push-rod that worked thru the box.
I doubt we would want more than about 7psi. We'd either be blowing thru 1 1bbl Holley, 1 2bbl Rochester, or maybe either 2-3 1bbl Holleys, or 2-3 1bbl Carter YFs, or 2 Carters and a Holley. At the moment I own 2 Carter YFs, 1 Holley, and 1 Rochester 2GC. I've been trying to find another matching Carter to build a tri-power for this motor, but so far no luck. I know I can get 2 more of the Holley that came stock on this motor pretty easily by digging in the junkyards. (the reason this is so up in the air is that I need to modify the existing log for any of these, there is no "catalog" solution)
The blower will most likely be a Ford Thunderbird SC from a 3.8l. I'm a complete novice when it come to boosted applications, but I would assume a blower intended for "dry" efi usage could not, or should not be used for a draw thru "wet" carburated application?
Anyway, lay some knowledge on me.