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Tech Question
Spencer S., Ovid-Elsie, MI, 1978 Chrysler Cordoba, 400
What is the Redline for a 1978 400 Big Block?
Stock, the valve spring are good to about 5,200 RPM. But the basic short block is safe to well over 6,000. Pin me down, and I'd say something like 6,250, without any component upgrades. But you'd need better (stiffer) valve springs to do this, and the stiffer springs would then require better pushrods.
Rick
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