comp cam

[stevesLX]

O.k. right now I have a F cam that everyone and their brother tells me that it is slowing me down when I run naturally aspirated. When I spray the car it it great. So with that being said Comp Cams claims they have a cam that has the same max lift as the F cam which is .512 on both intake and exhaust but smaller duration and differen't lobe seperation that will run circles around the F cam and will help me out tremendously. So just looking for some opinions on this from you guys. Here are the specs for both cams

XE270HR Intake Exhaust

Gross valve lift .512 .512
Duration at .006 tappet lift 270 276
Duration at .050 218 224
Lobe lift .32 .32
Lobe seperation 114


F cam Intake Exhaust

Gross valve lift .512 .512
Duration at .006 tappet lift 288 288
Duration at .050 226 226
Lobe lift .32 .32
Lobe seperation 112

 

[86bluecobra]

having less duration to mean means less time for air to get in and out. Seems odd that it would run circles around the F cam. I would talk to a custom cam guy. Get his opinion.

 

[Fast63]

I don't think the comp cam will "run circles" around the F-cam, and don;t know if even their cam will improve your power, but I do know their Xtreme Energy (XE) cams are really good off the shelf cams. Many people say the F-cam is good too though. Seems like you're running pretty fast, I don't think it's worth swapping the cam out.

 

[86bluecobra]

I have the 274 XE in my 351w. I have been thinking about stepping the cam up to the 282. Since I have installed vic jr heads and want a vic jr intake. Like I said before contact a custom cam shop and give them the details of your car. They will steer you in the right direction.