MarkMan

Got the GT500 on the dyno today! It's straight stock. Seems low to me! What do you all think? The dyno op said 2nd run was lower due to supercharger being hotter.

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Black Chrome

what hp was rated from ford for 08's stock?

MarkMan

500 hp at the flywheel

Black Chrome

18% loss at the wheels is norm i think

Just dont get caught up in it every car has the same or more loss, especially with autos.

2cokeman

Both those sets of numbers are low, how many miles on the dial now??

2cokeman

The GT500 is more like 13% loss to the wheels

Black Chrome

something is wrong with the dyno?

SaddleUp

Those numbers do sound low....should have around 2000ish miles now, right?

cheftjpeck

Allot of factors.... It's hot... Does the dyno guy know how to dyno a gt500 (believe me you'd be surprised how many don't) is the dyno guy got something to gain (ie is he trying to sell you a tune or mods etc) your hp and torque lines don't look smooth at all? Is there spark blow out.. How hot was the car on First run...I've seen a stock low of 418 and avg around 425-430 with higher stock numbers 435-450... Mine came in at 443 prior to mods...so yes numbers are low but I'd be more concerned on your shaky lines.... Don't think anything is wrong but it looks like the runs were not as smooth as they should have been... Find another dyno guy IMO...

cheftjpeck

What tires you have in there?? The stock eagle f1's... Wheel slip on the dyno roller?? That could explain the shaky curves etc too??