This may be a stupid question but what's the difference between rev-up and non-rev up? And how can you tell what motor you have? Is it based on years or something? Anyway, reason for asking is I found a non-revup longblock for sale out of an 06....guy only wants 600 bucks for it so i'm...

I looked around the forum and didn't find a thread like this but if you know of one let me know and kill this thread. I've seen threads like this on other forums and thought it'd be interesting to strt one here. I'll start it off: I did an oil change, changed my spark plugs and sprayed my...