When I got my Coyes double roller timing chain I looked an my crank gear had three keyway notches with 5 degrees advance and retard settings so I was wondering the same thing as Camaro77 was.

I suppose it had to do with valve timing an the power band but I just left it stock anyway for the very reason of not wanting to rip off the %#$% timing cover over again.

But curiousity never left me. and I always wondered what would have happened if I dared. I know some wonderful things do happen but i'd want to have done it right the first time.

Now, I ain't wanting to start any brawl but if I may put in my unwanted comments I will have a better day if nothing else.

There are a few that would eat their own vomit for 2 to 3 more horsepower especially if we are on a budget. And we don't race. Well, not yet.

And unless them manufacturers have Carroll Shelby in their research and development department then we get frumpy pigs to drive like the one i'm trying to straighten out now.

And besides, it's sooo much fun to experiment. It's really half of Hot Rodding eh?

Now, Camaro77, If you wanna peel that timing cover then you go for it.

If my thinking is correct then advancing will work you off the line and retaring it will get you up to ramming speed on the freeway.

But what i would do is move that power curve around with simpler parts.

But that's me.

Lemme know how it goes if you do buddy!