[Novaguy73]

Originally Posted by Ole Blue 68

Thanks for the info 71Chevy and MrC. I purposely didn't provide the maker in my first post but they are both Lunati. The first one is an older cam from them and the second one is one of their new Voodoo cams. I'm leaning towards the second one.

You will want to go with the second wone for sure. I have to totally disagee with Mr. C-1 on this. Advertised duration is not worthless by any means. Its an indicator of the intake closing angle and is critical in choosing a cam to match compression ratio. When you look at advertised duration most likely you will see that solid cams are rated @ .020 duration and hydraulics are rated @ .006. This is also somthing that needs to be taken into concideration. The second cam will have much more throttle response, have much more torque, it will probably produce more HP too. Also with your low compression the first cam is way too long on duration and would be a slug down low. 284 advertised duration is somthing i would run with 10:1 compression. Just for reference i run a solid 296/301 advertised 258/264@.050 in my street Nova. Im calculated at a precice 11.1:1 compression and i can still run 89 octane gas anywhere i want. Thats what advertised duration does for you. Its an indicator. 11.1:1 compression and 89 octane gas.....