Truck Forums - Total Horsepower

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freebird581bd

01-23-2007 10:37 AM

Total Horsepower

Can anyone tell me what the total horsepower is on a 2004 Sierra with flowmaster exhaust added. It it the 5.3L.

stevefendt11

01-23-2007 08:17 PM

RE: Total Horsepower

Well, its 295 stock. So the the amount you got from the exhaust is questionable depending on how much back pressure it is regulating. I would say that you might be at like 305-310. Thats as good of a guess as your gonna get without dynoing it

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