Top end speed at the salt flats George Poteet with the EcoTec 4 in the EcoFire F/BFS record 325.934 mph. Then in the Blown Speed Demon with the EcoTec 4 in the 390 mph range. Bobby @rabtech eat your heart out. And then they went to the twin turbo 441ci LS V 8 topped out at 438.643 mph
