Hi everyone,Im new on here.At the present,I am a 69 year old speed nut that is installing a 440 mopar into my 1981 f-100 stepside pickup.Yes, there is plenty of room to do this transission.My question is, what gear ratio should I use in the 9 inch rearend that is there.It is a 273 gear ratio at the present.I do want to get some milage out of it,its not going to be driven daily.Thanks for the help.
