637 v8 gmc

has anyone here ever run across specifications or pictures of the 637 gmc v8?

there is something about the old gmc 637ci in every url here:


http://thumb7.webshots.net/s/thumb3/0/84/61/31608461EoeDMKXEyM_th.jpg

http://rides.webshots.com/album/30782546mcbQmlZyYu?start=12


http://www.ford-trucks.com/forums/447226-534-vs-everyone-else.html



http://en.wikipedia.org/wiki/GMC_V6_engine

http://www.jalopyjournal.com/forum/showthread.php?t=153130

http://boatdiesel.com/Forums/index.cfm?JSESSIONID=f030eb3b5906713e51ed482823044 4417955&CFApp=9&Forum_ID=59&RED=NS3&EntryID=0

http://www.warner.nh.us/firehist.htm

http://www.hublersengines.com/connrodbear2.html