I had a 69 El Camino with a 4 bolt main 350 and a rochester 4 barrel. It had an outstanding top end surge of power when the 4 barrels opened....was crusing down the 405 in Irvine, CA once at about 55 and punched it one time and by the time I looked back at the speedo I was doing 110. It was too light in the ass end to really open up off the line tho. I would just sit there roasting the tires while people were driving away from me [sm=gears.gif] .