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Looking at the old one, it appears to look like the counterfeit plugs in the video I shared.
Just putting in the original L9H cam back in. I lost VE everywhere below 3k RPM with the stage 1 VVT TSP cam, which is where I really need the most power. The gains above 4500RPM were pretty substantial, but that isn't really what I needed for the suburban. I'm planning on just swapping the cam and springs back to stock VVT/no DOD and then put the high lift TSP cam in the 5.3 to go into the Camaro drag car with a turbo.
That was about what I found with the old TSP Stage 2 I had before, too. Ran strong, but pulling hard at 7k on a Yukon was just a bit unnecessary. With the baby truck cam (I looked it up, link below to what I installed last year), it feels stronger on the low end than the TSP cam and still pulls pretty good midrange and above. After getting it all sorted the other day, I took it for a test drive and it sure felt like it scratched all 4 tires on the 1-2 and possibly 2-3 shifts. It isn't VVT compatible (3 bolt), and it's been so long since it had the factory setup that I don't really have a direct comparison, but I don't feel like it is missing anything down low. I don't tow heavy with it, but it doesn't have the same lethargic feel that the Stage 2 cam had below 3k or wherever.
If that's the case, then it makes me feel better overall. Trash was gone, so that picture is all I've got. I'll probably tell myself it was bad plugs, unless and until it chews through another set before it is time.
Interesting. Seems very similar to the Gwatney Performance VVT1 cam, which was also on my radar for a possible swap.
