what is the diffence between a rev engine and a non rev engine?

is one a stick and the other an auto?

 

Info straight from http://www.motordyneengineering.com/G35.asp
revup engine - VQ "REVUP" engine. This is the engine in all 2005 MT G35's and Track/Anniversary edition 350Z's and all 2006 MT 350Z's and G35's.

non rev up engine are the opposite, everything that's Auto is the NON, and also the 03 & 04 6MTs are NON revup.

and your question aint dumb.