mopardrt Well-Known Member Joined Mar 10, 2010 Messages 3,811 Reaction score 144 Location Detroit Jan 29, 2013 #1 I have an original 1974 swinger 318 904 8 1/4 car, what spline is it 27 or 29? or something else?
SGBARRACUDA ROY Legendary Member Joined Dec 7, 2006 Messages 22,009 Reaction score 10,664 Location PLANT CITY FL. Jan 29, 2013 #2 Should be 27.
