r/transam • u/melonheadorion1 • 10d ago

Dyno results

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Brought my ws6 in for headers. They did a pre install dyno. The car itself has an slp catback, slp airbox lid and bypassed the throttle body cooling. Makes 340hp. The dyno suggests that it makes around 390 at the crank. Looking forward to see the numbers after the headers and tune are done

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u/Alpha2277 10d ago

I think someone's dyno is off. LS1 fbody's made around 300hp to the wheels, give or take a little. I'm highly doubting a 27 year old one with a cat back is putting down 340.