The Engine makes about 375 HP in my 67 Camaro. Big Cam, four bolt, stainless valves, roller rockers, headers. TH350 modified w/ 2500 stalll converter.
Depends on what your using it for. Race cars run at wide-open throttle, rich mixture, full load, and high rpm all the time, so they don't need a system (vacuum advance) to deal with the full range of driving conditions encountered in street operation. Anyone driving a street-driven car without manifold-connected vacuum advance is sacrificing idle cooling, throttle response, engine efficiency, and fuel economy, probably because they don't understand what vacuum advance is, how it works, and what it's for. With your setup, I would personally use a vacuum advance.
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