MightyBobo

iTrader: (12)

Hey guys, I just finished my cam install this Thursday. Got a few hot/cold cycles in on the springs before I beat on it at all past 3K. Anyway, went to Dyno tune today, and the below graph is what I got. Im happy because the little cam I got had great results with no tuning at all. But, the bad side is obvious - past 6100, it dropped in power suddenly. No noises, no knock sensor, nothing at all. Just the power drop. Any suggestions at all? Parts are as follows:

Stock LS1 intake with !EGR.
Crane Cams Z-Cam, 224/224, .551/.551, 112 LSA
Crane Cams Dual Valve Springs
Crane Cams Gold Extruded Rocker Arms (1.7 ratio)
Crane Cams 7.250 Chromemoly Rods (came with the rocker arms)

BTW, sorry - no wideband graph. But, according to the dyno operator, the numbers were fine.

Steel Chicken

iTrader: (3)

fuel pressure issue? knock retard? could be a number of things.

MightyBobo

iTrader: (12)

Nope, I got it figured out I think. I never shimmed the Crane dual springs at all, and I remember reading suggestions to do it. Someone in my other thread is saying that at 6200, they have a bard harmonic and Im exciting it. So, either shim em, or swap em out for others. Thanks for the reply though!

Steel Chicken

iTrader: (3)

let us know if that fixes it, everyone learns!