Chevy Small Block Dyno Tests - Old School Meets New
We knew we'd have to move massive quantities of air to match up with our Gen IV opponent, so we reached right for Dart's top shelf, choosing a set of Pro I 227 CNC cylinder heads. These gorilla lungs are cast of 355-T6 aluminum alloy and run 2.08/1.60-inch intake/exhaust valves. The valves are controlled by 1.550-inch springs, which are held in place by 10-degree titanium retainers.
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