Info on a supercharged 440

[Kaleb]

I found reference pics a plenty. But I have a 440 that I'm wanting to build. What supercharger would I put on this engine? Any other info would be helpful.

[Fat Brian]

It depends on what you are building. Roots type superchargers, the top mounted, belt driven, chrome ones, are sized by what their original application was, pumping air into Detroit Diesel two stroke engines. The common sizes are 4-71, 6-71, 8-71, and 12-71, taken from the size of engine they came off off. The first number indicates the number on cylinders the engine has and the second is the cubic inches of one cylinder. The 4-71 is too small except for very mild small block street applications. The 6-71 is the right size for most small blocks, it's about the size of most AMT superchargers that aren't the really old ones that are rounded on the top and bottom. The 8-71 is what I would use for your 440, the Revell 68 Firebird has a good one. If you are buiding 1/24 most of the Monogram superchargers are very nice, the 64 GTO and 70 Chevelle come to mind. The 12-71 used mostly for racing applications, it's the long style seen in more modern funny car kits.