Originally Posted by buckwild
Hi, I just bought a 1960 k20 fleetside. I would like to know how to tell if has a napco 4x4 in it or factory built. My 4x4 shift handle is on the left of my 4 speed trany. It has a 6cylinder 235. How can I tell if it is high pressure oil or low. Also what engine oil should I be using?
factory installed 1960 in K10 and K20 trucks.
Napco in K30 and up
here is one that I ran across the other day
http://fortwayne.craigslist.org/cto/2461687387.html
ron

Last edited by padresag; 06/28/2011 5:32 PM.
http://s908.beta.photobucket.com/user/padresag/library/turned%20works
http://s908.beta.photobucket.com/user/padresag/library/furniture
and a little history of where I come from
http://forum.woodenboat.com/showthread.php?156542-old-boatshop-in-Steveston