496 (8.1) straight piped

my chevy 2500 hd with a 496 straight piped

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Cammed 8.1
2002 chevy with 8.1 cammed sorry for bad video more coming soon

Turbocharged 8.1l
1986 gmc 3/4 ton, 8.1l, 80lb injectors , and Allison 6 speed. 66mm Garrett turbo rear mounted.

UHaul 26-foot GM 496 cid 8.1L full throttle merge
Got the ol' 26-footer on an interstate merge. Impressive.

8.1 liter 496 big block 2500hd
Just a video of my 2500hd with the 8.1 liter allison 5 speed transmission. pcm4less custom tune k@n cold air intake, magnaflow true dual Exhaust, chipped. Dyno 485 which is pulling power for this truck. this truck is not set up to race but i have ran a duramax diesal and ate him for dinner lol. the whining you hear is not the motor about to blow up its a tensioner pulley going bad.