408 cam selection - New Information Please come inside!!

[carfreak07]

Shimming the springs puts more tension on them. As you shim the spring more the stiffer it gets, so shimming it as close as possible to the maximum compression point of the spring puts the maximum amount of tension on the spring to prevetn valve float. The bad thing about doing that is that it wears out sprigns faster and causes a slight loss in HP due to valvetrain friction. Also carfreak before you post stuff about these springs make sure your facts are straight and scare SC into thinking he has the wrong springs for his cam. By doing the calcs with the info provided I get on Comps website I get a theoretical coil bind of .638". Now you wouldnt want to run it that close due to lifter hop(possible), coil deformation(@high rpm), and lifter plunger movement. Even on TSPs website it says .625 lift which would be about right when you factor in everything I listed above. Here is the link
Comp Cams "918" Stock-Diameter Replacement Springs
SC, I think the 228/232 cam is better decision lift aside, it will net you a very nice driving truck and will come out of the hole HARD on a 3K stall.

you said get my facts strait but you stated the same things I did!!! Maybe you should read my comments a little closer....pushing the springs to their limit is hard on the valvetrain just as we both stated....i was quting someone else's opinion on shimming the springs...so before you go bashing on me maybe you should read a little closer!

[SCIV]

Thanks everyone for the concerns and input. I weighed everything and spoke with numerous people before deciding on what I went with.

Thanks again.
S.C.