When it came time to plan the engine in our 1965 Chevelle project, we tossed around a couple ideas, but decided to modify the 350 that came with the car. It's a parts-store remanufactured 4-bolt 350 V8 with less than 10000 miles on it. The bottom end is ideal for a mild street engine, but we didn't like the crappy lo-performance cast iron heads and weak camshaft. So before we turned a single wrench, we turned to our handy copy of Dynomation engine simulation and dyno software to help us build a smooth 400 horsepower version of our engine. Dynomation helps you select cams, heads, compression ratios, exhaust.. all elements of engine design and then simulate dyno pulls and evaluate parts changes, all without buying a single part. It's a great way to hone-in on your ideal combination without having to spend extra money and time doing things twice.