Z-51 option, Dual Mode exhaust, K&N intake filter, Tremec close ratio 6 speed transmission with 343 axle ratio. LS-3 engine bored to 383 ci specs with new chrome moly cylinder liners with hi flow coolant channels. 383 bore stock forged pistons with larger pins. Titanium rods and Chevrolet C6-R racing stroker kit with 427 ci volumetric/stroke intake cylinder capacity. Heads are ported and honed for smoother exhaust and intake flow. ECM re-mapped for increased fuel delivery from 3000 rpm to 7k redline. Spark curve re-calibrated from 3000 rpm to 6000 rpm to 2 degrees advance over stock ECM curve. Electric coolant fans changed to relay at 200 degrees coolant rise…
