You're talking about the cam I am also looking at, and was also recommended to go a little tighter on the LSA.

The CC502, with the XE grind, 218/224 with 0.528/0.535 on a 112 LSA.

I've been told the 110 LSA may be better or maybe even a lower LSA, but what exactly improves? I can see it hurting the milage, but what exactly is gained.

Dan

 

Why did they recommend the lower lsd on your cam? More power?

I got the same cam but with the 110* lsa (442-8). It's funny that comp. also lists my cam as the XR 270 HR, while the 112* lsa is XR 269 HR. Does comp. comsider this a slightly bigger cam? I believe so. I was told that a tighter lsa built a stronger midrange which also comes on faster which translates to a greater overall average torque and hp. The greater midrange is also said to be better as it's where your engine spends more of it's time- especially on the street .

I haven't installed the cam yet, so i can't give you my opinion on it's performance. I'm sure that it'll RIP!!!, as it's substantially bigger than the mild 260HR it's replacing.

 

You can either run a lot of duration or a lot of lift to make power. When run a lot of lift, you can take away duration, and therefor make better lowend and off the line power. Also you can tighten up the LSA without the side effects of have to deal with a "lumpy" cam. So, milage shouldnt be hurt as much running a 110 or 108 LSA on that cam, as it should running the same LSA on a cc306.

 

Why not run a lot of duration with a lot of lift?

 

You could do that. That is what the LS1 crowd is doing. One problem with doing that is you lose your off the idle power, and can take away from drivability. If those arent important too you, then more power to you. I for one dont see the need to rev a car more then 6500 if its for the street and one of the most important things for the street is that off idle power.

 

Also the optimum camshaft for the LT1 vs the LS1 is completely different in the duration department.

Bret