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Are these bad numbers?

This is a discussion on Are these bad numbers? within the Firebird / WS6 forums, part of the Vehicle Specific category; I put my Trans Am on a Dyno-Jet Dyno this past weekend at my works car show and it made ...

  1. #1
    Member TA98's Avatar
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    Are these bad numbers?

    I put my Trans Am on a Dyno-Jet Dyno this past weekend at my works car show and it made 280 HP and 313 Lbs. of Tq. Its a bone stock 1998 model with 172,000 miles. I was just wondering what you guys thought.

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    Quote Originally Posted by T/A98 View Post
    I put my Trans Am on a Dyno-Jet Dyno this past weekend at my works car show and it made 280 HP and 313 Lbs. of Tq. Its a bone stock 1998 model with 172,000 miles. I was just wondering what you guys thought.

    If its an auto i would say those are decent for the age.

  3. #3
    Member TA98's Avatar
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    It is an auto, and its still the original trans. I didnt think that they were to bad considering the mileage. Im hoping to make over 325 next year with an exhaust, lid, MAF, Shift Kit, professional tune, maybe intake and throttle body.

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    Detailing + Design third_shift|studios's Avatar
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    I would be pissed if that was my car. I've never heard of an LS1 with such a low HP.

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    Member km346's Avatar
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    Bone stock 98, 170k and running threw an auto trans... and you'd be pissed?

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    Quote Originally Posted by third_shift|studios View Post
    I would be pissed if that was my car. I've never heard of an LS1 with such a low HP.
    You also have to take into consideration that the 325-350hp numbers from the factory are measured at the engine, not at the wheels, so numbers like that are common.

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    its rated at 305 to the motor...look up the dynos for the new mustangs and see if you still feel bad

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    Moderator Firebirdjones's Avatar
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    Sounds about right. A stocker with an auto trans and 170,000 miles to boot??? 280 at the wheels is nothing to sneeze at.
    Keep in mind dyno's are simply a tuning tool, they all vary from one to the next.

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    Quote Originally Posted by third_shift|studios View Post
    I would be pissed if that was my car. I've never heard of an LS1 with such a low HP.
    why??? it's an auto...

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    Senior Member clg82's Avatar
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    Quote Originally Posted by Spaz View Post
    why??? it's an auto...
    confused here....so your telling me if it was a manual it would have made more horsepower with the same engine?

  11. #11
    Moderator Firebirdjones's Avatar
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    Quote Originally Posted by clg82 View Post
    confused here....so your telling me if it was a manual it would have made more horsepower with the same engine?
    A little but the difference isn't huge. Just takes a little more power to turn the auto,,,and the converter slippage loses a bit. Not a big deal really.
    Last edited by Firebirdjones; 05-13-2009 at 05:58 PM.

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    Senior Member Hurley711's Avatar
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    Funny how no no one mentioned the impressive 313 lbs of tq, I dont give a damn about the hp # when you are putting down that amount of tq stock on a older car

  13. #13
    Moderator Firebirdjones's Avatar
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    Quote Originally Posted by Hurley711 View Post
    Funny how no no one mentioned the impressive 313 lbs of tq, I dont give a damn about the hp # when you are putting down that amount of tq stock on a older car
    Ya it's a healthy motor for the mileage.

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    Junior Member xssesive's Avatar
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    I think with a dyno tune and slp air lid you should be close to 300HP. If I remember right I picked up about 15HP with the tune, lose the torque management on the shifts and a lower thermostat with reset fan temps! It will feel like a completely different car!

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    i think those are great numbers for it being auto AND 175000 miles
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    Veteran Blackbird WS6's Avatar
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    Quote Originally Posted by T/A98 View Post
    It is an auto, and its still the original trans. I didnt think that they were to bad considering the mileage. Im hoping to make over 325 next year with an exhaust, lid, MAF, Shift Kit, professional tune, maybe intake and throttle body.
    keep the stock MAF and add headers and stall to your list and your set to go

  17. #17
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    Thats about right.
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    I'd rather be bi than full homo!!!!

  18. #18
    Senior Member clg82's Avatar
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    2000 Trans Am

    Quote Originally Posted by xssesive View Post
    I think with a dyno tune and slp air lid you should be close to 300HP. If I remember right I picked up about 15HP with the tune, lose the torque management on the shifts and a lower thermostat with reset fan temps! It will feel like a completely different car!
    I noticed that when I got my tune he adjusted the fan temp as well. What exactly does this do that is worth anything besides keeping the engine cooler. Because I noticed that my fan is constantly on now once the car reaches operating temp.......
    2000 Arctic White trans am, ws6 hood, ws6 air box, slp lid, slp smooth bellows, slp loudmouth exhaust,shift kit, rebuilt trans, LS6 intake, 3.73 gears, Shaner S3 p/p throttle body, and a tune . SFC. C6 ZO6 rims 18" in back 17" in front. Drilled and slotted rotors.

  19. #19
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    Quote Originally Posted by Y2KPewterSS View Post
    Thats about right.
    for about 400 bucks you could easy see over 330 hp... tune, lid, cutout, ported tb...

    Gas mileage too


    creeping closer to 162k here

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