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horespower seem a little low?

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Old 02-28-2012, 10:15 PM
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Default horespower seem a little low?

so i recently did a dyno pull and made 325hp with mods in my signature and also added a 25% ud pulley does it seem low to yall.
Old 02-28-2012, 10:20 PM
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did you just do a dyno pull, or get it tuned and dyno'd? where did the HP drop off?
Old 02-28-2012, 10:24 PM
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just did a dyno pull just wanted to see my numbers because i recently had it street tuned
Old 02-28-2012, 10:29 PM
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for a good tune, longtubes and intake it is a little low, but not by much. could have been a shitty tune, bad weather, or a sucky dyno. i have seen stock LS1's put down between 285-320 on stock motor, so it all matters. 325 to the wheels is still respectable, that is still 370-375 motor.
Old 02-28-2012, 10:36 PM
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Yah was hopeing to hit 340-350
Old 02-28-2012, 10:39 PM
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I was always under the impression that you could pull an easy 20-35hp from headers and exhaust alone, maybe another 10ish from the pulley and a bit more from a good tune.


Was this on a mustang dyno?
Old 02-28-2012, 10:43 PM
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Yah me to although my headers are 1 3/4 to 3inch collector and exaust i went with the slp loudmouth for a easy flowing exaust. Maybe i should of went with 1 7/8 but from what ive read its overkill for a stock cubed motor
Old 02-28-2012, 10:44 PM
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It was a dyno jet
Old 02-28-2012, 11:05 PM
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You have a stall and a street tune, a dyno tune will always be more aggressive
Old 02-28-2012, 11:11 PM
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well when i had my QTP 1 3/4 headers, QTP y-pipe, LM1 FTP 98mm lid, and a FAST 92/92i dynoed 362rwhp before my heads and cam swap, untuned. dyno was for ***** and giggles
Old 02-28-2012, 11:16 PM
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So you think i can squeeze alot more out of a dyno tune also just found a exaust manifold leak two studs broke off if that could be a factor
Old 02-28-2012, 11:18 PM
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if you are gonna do heads/cam anyway, i would just wait, save your money, and get it tuned when your done. you will be alot happier if you hit 420rwhp from 325rwhp then you would be going from 345rwhp to 420rwhp
Old 02-28-2012, 11:23 PM
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True this was just a base read for when i start getting into the motor just seemed a little low
Old 02-29-2012, 08:50 AM
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You have a stalled automatic with drag radials.

Your numbers are right on (not that they mean much anyway). A stalled auto will not dyno the same 345rwhp as a 6 speed with the same mods.
Old 02-29-2012, 09:54 AM
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Originally Posted by thunderstruck507
You have a stalled automatic with drag radials.

Your numbers are right on (not that they mean much anyway). A stalled auto will not dyno the same 345rwhp as a 6 speed with the same mods.
+1 Stalls kill dyno numbers. They seem right on to me.
Old 02-29-2012, 10:55 AM
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so having a stall hurts dyno numbers
Old 02-29-2012, 11:01 AM
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Originally Posted by thunderstruck507
You have a stalled automatic with drag radials.

Your numbers are right on (not that they mean much anyway). A stalled auto will not dyno the same 345rwhp as a 6 speed with the same mods.
^ What he said.

Dyno doesn't mean much. I will be extremely happy if my full bolt on A4 car makes 330RWHP. The cars' already trapped 113 at damn near full weight so I'm already happy with it.

How the car run at the track?
Old 02-29-2012, 11:56 AM
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car ran a 13.5 bone stock and traped at 100
Old 02-29-2012, 02:02 PM
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Stalled auto = shitty dyno.
What kind of dyno?
You should have gone with 1 7/8 primaries.
Your car looks set up from drags not dyno bragging.
For what it is, your numbers look as expected.
Compare your time and MPH, not dyno numbers, they don't mean much with your setup.
Old 02-29-2012, 02:53 PM
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was the converter locked ?



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