The Stovebolt Site Forums The Shop Area Driveline Help Identifing rear diff

Thanks Bill,
Found numbers / 3707340 D2 Is this 3:90,s or 3:70,s?
And if 3:90,s what will be top speed on the 216 and max rpms approx.? Sorry, this dipper engine thing is all new to me! I met a guy at a carshow Saturday and he has a 235 from a 57 he'd let go for 300.00. But I actualy like the 216 now that I have it running!
Phil...