Thanks for that info! I knew the 6 was cylinders and 71 cubic inches, but obviously got the source of the cubic inches wrong! Your explanation makes much more sense, I think there's a 4-71 blower also. On July 15, 2005 andrew hay wrote: > nope, that would be referring to the engine it was designed for. once > upon a time the 6-71 was a popular engine for gmc trucks. '6-71' > means six cylinders [in line], 71 cubes per cylinder. note there was > also a 6v-71. > ============================================================= Posted by wixList Archiver -- http://www.amxfiles.com/wixlist