Fuel push rod question ( noise )

[Bruce in southern OH]

My question is an aluminum intake on a 36 V8 21 stud motor to have a 7 3/4" push rod?? If so what is method to cut the rod 1". I heard the noise in engine and took motor apart to find noise. First thing I found was the 3/4" round tube that is pushed in to the fuel stand had came loose and was free flowing in 5" baffle. Put the round tube in stand and still has a loud noise from fuel pump. Found a fuel pump rod marked cast iron that is same length. This truck has not been started in 8 years and was like this, Now what is best method to cut to length. ( is 7 3/4" or 1" short correct for aluminum intake ? )