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.
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'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