HI there just joined
Let just solve some thing here the 235 can and will be a good drag engine if you so want if you are staying stock then put a tiwn carb manifold on with tiwn pipes then change your tail up to a 3.55 to 3.10 that brings your rpm down
3.10 will run right at around 2000 rpm
3.55 2500rpm
3.73 is what you will have that is 2750 this all happens at 60 mph
your best bet is some where around 3.22 that will let you run 75 easy
the inliner international has warm up parts for inline sixes I used to drag race a 216 in my younger years and 350s were not the king of the hill then , I now run a 302 6 in my one ton 1951 and gearing is a killer in that with 5,14 in the tail, oh well that is lift when you have apuller sundown