The 318 we have a in 68 Coronet 440 2 door hartop with Summit Racing K6900 cam, electronic ignition, summit headers, weiand 8007 intake, and open element filter and an Edelbrock 1406 600 cfm with a stock/converter 904 and 2.76 gears on 245/60/14 tires ran 15.2 @ 92 mph supposedly.