Whats Under The Hood? by franco7
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Comments (3)
cujoe_da_man
awesome work, two of the greatest cars ever :D
tallpindo
I was at the hood lifting contest at the shopping center in Monroe, Michigan in the early 60's. The advantage of the wedge in preventing preignition or detonation was in it's swirl and the quench near the sparkplugs. Bore was limited to under 4-1/4 inch. This was all tested at Ethyl Corporation in one cylinder engines with quartz windows for viewing combustion. Hemis with squish bands were non-optimum. Stratified charge combustion was being tested in Army engines. Iron makes the best cylinder surface. It allows piston rings to quickly seat and gives good wear. Bronze inserts in aluminum heads will erode quickly and may pound out with heavy valve springs on push rod designs. A camshaft with 254 degrees of duration is a "blower grind." A camshaft with 320 degrees of duration is too much for street use especially with extreme overlap. Chevrolet V-8's like a lot of initial spark advance but keep the total advance to under 40 degrees. Traction mix asphalt is coming for drag strips.
ansgar2
Cool cars....