Not Ranked
The last handful of bigger camshaft motors that I've played with are all solid rollers..... BUT - they can easily go up to mid 260s in duration with a manual trans using 347 or more cubes without a hint of a problem. Idle's closer to 1,000rpm, but a 4 barrel's no problem!
Remember how light a Cobra is - much easier to get off the line than a heavy old sedan...
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