stock dyno numbers

[actireman]

Originally Posted by tpower

my auto went 454 on Livernois dyno

Just remember, it depends on the parasetic loss they have programed into the dyno. I own a Mustang MD250 dyno and we did mine last week. I had 439 with our regular number in the computer and then just for kicks I changed the number and it went to 460. I can make it read more if I want, no problem. I have a manual.

[1MtnGoat]

Originally Posted by paul2010

I thought the autos had 3.27 gears not 3.72?

Autos are 3.23 gears.

[Blown355]

Originally Posted by PAUL SS

How many miles on thes cars being dyno'd?

1539

[htron50]

I am curious about the dynos themselves.... how often or frequently they are "certified accurate". They must also have a wear factor too.

[fiascoes1]

this was on borlas dynojet 500hp. I did 512 HP on haddadmotorsports dyno. Car is still not past the break in period.

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[PistonsFan]

Originally Posted by paul2010

I thought the autos had 3.27 gears not 3.72?

Originally Posted by 1MtnGoat

Autos are 3.23 gears.

Right, and I'll add...

Manual Trans:
4th gear = 1.0
FD = 3.72
4th x FD = 3.72

Auto:
4th gear = 1.15
FD = 3.23
4th x FD = 3.7145


So, regardless of manual or automatic, final gear ratio is 3.71-3.72.

Basically his dyno chart calculations are correct. If you recalculate it with auto trasmission gear ratio and final drive, the difference is less than 1 hp.