03 Suburban LM7 5.3 Blackbear tuned 0-60 video Magnaflow Muffler Vibrant Resonator exhaust sound AFE CAI Intake

[Burban22]

Hi All,
Here's a 0-60 in my Blackbear Tuned Suburban. If it seems slow, I'm at 6900' elevation which equals 21% power reduction since you loose 3% hp & tq for every 1000' elevation gain. Take a second off the time for a near sea level run.

Stock manifolds

Afe Momentum GT 54-74101 CAI

https://www.amazon.com/aFe-Momentum-54-74101-Performance-5-Layer/dp/B00IWLA202

Magnaflow 12588

https://www.amazon.com/MagnaFlow-Exhaust-Products-12588-Muffler/dp/B000CC9C5K

Vibrant 1141 2.5" Resonator

https://www.amazon.com/Vibrant-1141-Ultra-Quiet-Resonator/dp/B000E3VHWI

 

[ExEl03X4]

Without knowing for sure the axle ration and tire diameter, I think that it seems to be about the best you can expect from a 4-wheel drive at that altitude.

 

[Burban22]

Without knowing for sure the axle ration and tire diameter, I think that it seems to be about the best you can expect from a 4-wheel drive at that altitude.

3:73 axle ratio
285/70/17 BFG says 32.7" overall diameter load range E

 

[Mudsport96]

That is not bad for the altitude and the tire size being larger than factory