2008 Silverado Low Power

[CurtisBreaud]

I've just finished getting my 2008 silverado 1500 installed with a 5.3 liter, 4l60 trans, with 4.10 gears. I've got a LS9 cam, 3" headers, 3" exhaust, TBSS intake 90mm TB, 2800-3000 stall converter. I've got a tune in it that has a great top end charge starting around 3k-3500 rpm. It's a dog up to that point. I've seen older threads on this, but I can't open the attachments that seem to correct this issue. I'm guessing I need to check my timing down low, but is there anything else I can check to get more power out of the program? Thank you in advance for any help with this. I'm very new to the programming side of this build.

[5FDP]

Terrible camshaft choice without a blower. So many better camshafts that will actually make power down low.

Always post your tune and logs. And I hope you have a wideband on this engine.

[blindsquirrel]

The LS9 cam's whole reason for existing is to drastically limit low-end torque (for both warranty claims and traction reasons) in the original positive displacement blower application. The same 211/230 duration but on a 112 or 110 lobe separation angle (or even 108... 107... 105) could make something like 100 lb-ft more torque under 3500-4000 on a N/A engine.