Pretty sure this is it. >> http://www.jegs.com/i/Crane/270/10003/10002/-1#oldtruck said:have an old crane cam need to know spec. # HMV 260-2-NC also has 11 31 86 its for small block chevy
From an old Jegs Catalog.
260H- Brute low end torque, great for daily driver, Smooth idle, rpm range 1400-4600, Cruise rpm 1600-2200, Comp. 8.0-9.5:1