Well, my cam has 4 degree advance ground into it. Then, I installed my cloyes double roller and accidently advanced it 2 more dgrees. So now the timing is advanced 6 degrees over stock. Is this gonna be a problem? Well, let me clarify. I ran the cam in the car already, so now is the additional 2 degrees I just added gonna be a problem?

 

Anyone?

 

Advancing or retarding the cam only shifts the relationship between the opening and closing of the valves and the piston. I use to run a Pontiac 400 with a Ram Air IV camshaft advanced 4 degrees. It shifted the torque curve down which also reduced my top end rpm's. 6 degrees is quite a bit but as long as the valves aren't hitting any pistons, you're ok. Maybe not the best in terms of power though.

 

The LTx cams have to be installed straight up because the opti is run off the cam. Other wise you'll have ignition timing issues. Some say that can be adjusted with programming, some say not satisfactorily.

 

Your right, but that is really ignition timing. What I did was change the cam in relation to the crank.

 

This just in, here is the technical email I got from Comp Cam.

I wrote:

Hello, I have a custom grind XE230/236 on a 114LSA w/ 4 degrees advance ground into it. I had been running it on my 95LT1 with stock home ported heads and made 351rwhp and 340rwtq. Last night I installed a cloyes double roller timing chain set and accidently put the crank gear on at 2 degrees advance. Now, does this mean I have a total of 6 degrees advance? Also, is this gonna be a problem? Will it hurt power, any piston to valve problems, etc.) Any advice would be appreciated. Thanks.

Comp Cam wrote:

The 2 degrees extra may hurt the lower end, you might consider changing it back to wear it should be.

Pretty nice technical info huh.

 

All three are interrelated. The opti also determines when the injectors fire.