how do I
 

figure out what size/pitch props I have..no markings on them...

Re: how do I
 

You most likely have 14.5 X 19p rh props if they are orig to the nova with alpha style 1.33 drives and 351 ci ford 233hp engines but I would need more info to confirm this. someone probably changed to props to michigan and the markings are just ahead of the propnut and may be corroded if they are aluminum.

Re: how do I
 

its got the 302's 188 hp

Re: how do I
 

what do you get for top end speed and rpm's ? they could be 21 pitch because the 188's had a 1.5 ratio drive

Re: how do I
 

not completely positive, if I remember right I was doing 47. something on the handheld gps around 4400 rpm

Re: how do I
 

Call us and we can discuss the propellers