The LS1's are faster than the LT1's mid to low 13's are common with a few real good drivers breaking into the 12's. My friend ran a 13.4 with his '98 Z with no mods. Stock LT1's are usually in the high 13's low 14's. The SS's run the same as the Z's, at least they do with the LS1's.
'69 RS SS 396 375hp L78 Convertible, M22, 3.31 posi, deluxe interior, gauges, rosewood wheel, AM-FM, fold down seat, tilt wheel, Torque Thrust Wheels, console mounted 8 track player, chambered exhaust, locking gas cap
COMING SOON Corvette tripower, small body HEI, and maybe "842" aluminum heads