Advancing a x303 cam?

[lefebvrn]

I just got everything for my engine. I am taking it to the builder next week. My question is should I advace my x cam 4 degrees to drop the RPM range down? I don't want to run out of RPM on my stock rev limiter. I hope this makes sense. I would like some suggestions before I ask my engine builder for some. So I have some ideas on what he is talking about. I know my intake's RPM range is 1500-6500 and the X cam RPM range is to 6500. What is the stock rev limiter at? Just want some ideas.

 

[Jason 302]

I advanced my TFS #1 2*, and wish I hadn't. I'd put it in straight up.

 

[Gearbanger 101]

You could advance it a little to give you a tad more bottom end, but the difference will be minimal. Just make sure to re-check your piston to valve clearance afterwards. I’m not sure what the clearance is for that cam and your Edelbrock heads?

 

[lefebvrn]

You could advance it a little to give you a tad more bottom end, but the difference will be minimal. Just make sure to re-check your piston to valve clearance afterwards. I’m not sure what the clearance is for that cam and your Edelbrock heads?

If the differnece is minimal than I will get it installed staight up. I am going to check piston to valve clearance but I should be fine I have Probe pistons and they are notched fairly well.

 

[tjm73]

I just got everything for my engine. I am taking it to the builder next week. My question is should I advace my x cam 4 degrees to drop the RPM range down? I don't want to run out of RPM on my stock rev limiter. I hope this makes sense. I would like some suggestions before I ask my engine builder for some. So I have some ideas on what he is talking about. I know my intake's RPM range is 1500-6500 and the X cam RPM range is to 6500. What is the stock rev limiter at? Just want some ideas.

6250 is the stock rpm limit built into the factory computer.

I'd put it in straight up, but with a degree wheel, not just lining up the marker dots.

 

[lefebvrn]

Is the X cam close to or the same as the B cam except it has more lift? I think I read that in a thread. If it is similuar I read that advancing the B cam is recommended. Or am I completely off.