I just installed a 251/259 @ .050 Part #30300742 in a 360 I'm putting together and the degree and lobe lift were perfect.
The #30200741 I currently run in my 340 got the job done with a 8.75 4.56 gear 28 inch tire. 11.64 I've been beating on the 340 for over 10 years so the 360 is the next mule to experiment with.
I put a Dana 60 4.10 and 26 inch tire in preparation for the 360 and lost a tenth.
