The HP 409 was a winder like the small block because it had a 3.5" stroke, big ports and valves, and lots of carburetion, but there was little valve/piston clearance.
Unlike some of the big CI engines of its day, the 409 was not one of the quickest out of the hole but they would run you down before the traps.
A friend of mine had one in a 57 BelAire. I bought a Z-11 cam for him while working in the parts dept at the local Chevrolet dealer in 1968 or 69 ($24.**) and helped him install it. At 1000 RPM idle it would sometimes rattle the windows in the cars beside it at the drive in. Wish I had it.
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Today's Featured Article - Fasteners: The Nuts and Bolts of Nuts and Bolts - by Curtis Von Fange. The nuts and bolts of nuts and bolts is an interesting and essential piece of knowledge that applies to our older tractors. An improperly torqued capscrew on an engine head or a shear bolt that is too hard on the driving shaft of a bushog can create havoc and make an expensive and uncalled for repair. Let�s examine the purpose and design of these fasteners in order to ensure their proper use. Fasteners are probably one of the aspects of mechanics that is given the least amount of thought.
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