You can go as big as you want, But there is no direct bolt in for a bigger motor. Best thing to do would be to put a 503f/c in it. Or if you want a direct bolt in just bore out the 377 in it.81 citation ss said:I'm not to good at this yet, So how do i go about cleaning the carbs and adjusting the floats???
And also can anyone tell me what is the biggest motor i can put in a 81 citation ss
thanks for any help