i have just completed my 231 to 327 swap im not sure wats going on with it i know everything as for plugs and wireing are all right it was in a car with i got it and it runs like it should now it just dont not have any power wat so ever and at high rpm it back fires i know i droped the dis. right i put i timing light to it and got nuthing out of it still runs the same the mixture screw on the carb. are 1 1/2 out if anyone can give me some good help to sovle my problem