I'm getting ready to put the front cover on my motor, and I wanted to get some more opinions before it's all sealed up.

Should I put the cam in where it is (degreed in) or stick to the +4 ground into the cam? Will either one give me more valve clearance than the other?

 

Putting it in "straight up" is what I would do......dunno about which would give you more P to V clearance though. But with 4 degrees ground in most cams, I would go straight up with it.

 

From what i understand, when you install it straight up, the cam is already at +4 if it is built into the cam. If you advance it another 4 degrees you will be at an 8 degree advance.

See this post about the P2V, its a good read and itll give you some idea of where you need to be. https://www.performancetrucks.net/fo...6&page=1&pp=10

 

That is what I understand too.

 

By stright up, I meant 0 advance on the cam. I guess technically, it would be retarded 4* right now.

So .... should I leave it there or use the +4 ground into the cam?

 

With it installed straight up, its advanced 4*.

 

well in theory it doesn't matter since you can alter the timing however you like with tuning software. right?

 

That would only change ignition timing advance, and would not alter the advance of the valve events.

 

Did I miss where the specs are posted on the cam?

 

I was told from my cam grinder that GM grinds LS cams @ 0* and if you use OEM gears / line up the dots, the timing is actually 4* retarded for better emissions. So if, you have 4* advance ground in, youll have 0*using stock gears. Hope I was told correct info! Clear it up Please!