Redline

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 shortblock is safe to well over 6,000.…

Tech Question Rob C, Oakland, CA, 340 There is an argument raging about rpm limits on 340's withstock two bolt mains; some say 8200+, and while never saying never, I'd haveto see some more hard data before I'm a total believer.…