Zero, I had a 74 260 4 seater (see my site) with headers and triple Mikunis with MSD, 5 speed, 3:54 rear stock internals bored to 2.9 Liter and ran 14.55 at 95+ MPH. It was a long time ago...in Carlsbad California. Before I built my current 350, my 2 seater ran a 13.7 at 99MPH on the stock 350 with headers and a Holley 650 VAC secondary....however I have fixed that problem!! Can't wait to run in the spring....must have new tranny as well....
CZ