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What do stock LS1's dyno/run in the 1/4?

This is a discussion on What do stock LS1's dyno/run in the 1/4? within the Dyno Information forums, part of the Racing Forums category; 2000 6spd firehawk dynoed 320 rwhp 335 tq on mustang dyno and ran a best of 12.9 @ 109 and ...

  1. #121
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    2000 Slp Firehawk #128

    2000 6spd firehawk dynoed 320 rwhp 335 tq on mustang dyno and ran a best of 12.9 @ 109 and a couple 110's but slower times in the 1/4 mile. This was in michigan.

  2. #122
    Member GA Country Boy's Avatar
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    I'm not sure if I understand this thread, but a car weighing 3,400 lbs and putting down 255 HP should run around 13.81@97mph regardless of which motor. It's a weight/HP thing. I chose 255 figuring a 15% loss off a 300HP motor.
    Michael
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    pewter
    2001 z28 lingenfelter 383

    im not sure u understand stock ls1 camaro/firebirds in general...even the car mags posted times in the low 13s at 105 to 107 stock obviously...gm rated them at 305 and its obviously underrated....hummm

  4. #124
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    Quote Originally Posted by tonyjnjz View Post
    im not sure u understand stock ls1 camaro/firebirds in general...even the car mags posted times in the low 13s at 105 to 107 stock obviously...gm rated them at 305 and its obviously underrated....hummm
    The INITIAL post in this thread said:"So, all you who actually KNOW a thing or 2 about LS1's, what do they dyno and run in the 1/4 stock?"

    The question was about LS1's NOT about camaros/firebirds or any specific car.
    As far as I know, the term 'LS1' refers to an engine NOT a specific car. In fact I was not professing any specific car knowledge, but merely stating mathematical calculations which are easily verified by anybody who wishes and apply to all HP/Weight applications.

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    pewter
    2001 z28 lingenfelter 383

    instead of using math to figure out rwhp using the manufactur's stats y dont u just go by a much more reliable source like a dyno???????

  6. #126
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    Quote Originally Posted by GA Country Boy View Post
    I'm not sure if I understand this thread, but a car weighing 3,400 lbs and putting down 255 HP should run around 13.81@97mph regardless of which motor. It's a weight/HP thing. I chose 255 figuring a 15% loss off a 300HP motor.
    Yeah, but truthfully LS1 fbody isn't really a 300 bhp motor. Vette LS1(engine)= Fbody LS1 (engine)

  7. #127
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    Quote Originally Posted by tonyjnjz View Post
    instead of using math to figure out rwhp using the manufactur's stats y dont u just go by a much more reliable source like a dyno???????
    I'll leave that up to you. So just post your address where everybody can take their cars so you can dyno them for free. And you will need an engine dyno since this thread (like I pointed out previously) is about the LS1 engine. Also obviously you are not really familiar with dynos if you believe they are "a much more reliable source". Again my post was merely an example of what would be expected from a certain combination. If you believe the combination should be different insert your own numbers and punch out the results yourself. Do you really think manufacturers build engines NOT knowing what to expect from them BEFORE they build them?

    As to the above post: "Yeah, but truthfully LS1 fbody isn't really a 300 bhp motor. Vette LS1(engine)= Fbody LS1 (engine)"
    See my previous post. This thread is NOT about F or Y body cars, but is about the LS1 engine. BUT since you made the statement "Vette LS1(engine)= Fbody LS1 (engine)", WHICH years of engines are you comparing? Or are you saying ALL vette LS1 engines are the same as ALL F body LS1 engines?

  8. #128
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    I got my SS with 48,000 on it and it dynoed stock at 310rwhp

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    Quote Originally Posted by 1320 King View Post
    I got my SS with 48,000 on it and it dynoed stock at 310rwhp
    ? On a Mustang or dyno jet dyno.

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    Quote Originally Posted by 1320 King View Post
    I got my SS with 48,000 on it and it dynoed stock at 310rwhp
    AND HOW do you know if it's 'stock' when one or more people had it for a couple years BEFORE you? I am sure whoever wound up with my last car probably thinks it's 'stock' too, but it's not. The heads LOOK 'stock', but they are not. Nobody can SEE the higher compression ratio or the different rear end or cats (unless they get underneath and look) or the expert non 'stock' tune. It's also pretty tough to tell the difference between an LS1 and an LS6 intake unless you have them off the car.

    And as SKAR was subtly hinting at, different dynos can and often do produce different results. That's why I specify in my sig the make AND model of the dyno that produced the results I am showing. Just to double check I run on a different dyno from time to time just to make sure the results are in the same ball park.

  11. #131
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    2000 Slp Firehawk #128

    Agreed to GA BOY. Except people who know the cars should be able to tell a ls6 intake from a ls1, but then again prolly not.

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    Quote Originally Posted by slpfirehawk00 View Post
    Agreed to GA BOY. Except people who know the cars should be able to tell a ls6 intake from a ls1, but then again prolly not.
    I can't tell an LS6 intake from an LS1 intake without looking at the bottom of the intake. They look identical up top. Short of the egr delete is the only way I can think of telling.

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    ppl dont know if there car is stock GA boy??? ive heard of MANY ls1's ( camaro, trans-am, vettes) 1 owner cars that dyno near or above 300 rwhp ...man your right, gm is right on with that 305 flywheel hp.....u also claim an ls1 in a 3400 lb car should run 13.8 at 97 ..funny ive never heard of anyone trapping that low near sealevel in a stock ls1 ...except maybe that heavey ssr thing.lol

  14. #134
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    Quote Originally Posted by tonyjnjz View Post
    ppl dont know if there car is stock GA boy??? ive heard of MANY ls1's ( camaro, trans-am, vettes) 1 owner cars that dyno near or above 300 rwhp ...man your right, gm is right on with that 305 flywheel hp.....u also claim an ls1 in a 3400 lb car should run 13.8 at 97 ..funny ive never heard of anyone trapping that low near sealevel in a stock ls1 ...except maybe that heavey ssr thing.lol
    So you have heard of "MANY ls1's" that "dyno near or above 300rwhp", BUT "have NEVER heard of ANYONE trapping that low". I think you nust have a great imagination or very selective hearing. OR your MANY ls1's are ALL the 350hp version
    which will dyno around 300rwhp (350 X .85 = 297.50). As I posted previously
    "I chose 255 figuring a 15% loss off a 300HP motor." (300 X .85 = 255) OBVIOUSLY if you want to choose a 350 horse motor the numbers will be different.
    Run your numbers yourself: www.rpmoutlet.com/dyno.htm

    BTW, tonyjnjz I was wondering if the numbers you are quoting are from your "reliable source" dyno? Or are you making them up to suit yourself? Or do you really believe a stock 300 horse motor is still going to be putting out 300 or more horse power at the rear wheels?

  15. #135
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    Quote Originally Posted by GeeTee View Post
    I'm having a gay little argument with someone jackass on another board who know's absolutely NOTHING about cars, yet he sits in front of his comp and insists that LS1's dyno under 260rwhp stock and run low-mid 14's.

    I'm going to link this thread to that other board. So, all you who actually KNOW a thing or 2 about LS1's, what do they dyno and run in the 1/4 stock?
    stock dyno ws6 327rwhp

  16. #136
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    these cars are definitly underated, stock 2000 ws6 m6 with 87,000 327rwhp

  17. #137
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    ive dynoed three ls1 cars all before mods 312, 322, 327 rwhp

  18. #138
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    Quote Originally Posted by preppy View Post
    these cars are definitly underated, stock 2000 ws6 m6 with 87,000 327rwhp
    Who dyno'd it? What make dyno?

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  20. #140
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    Quote Originally Posted by GA Country Boy View Post
    Who dyno'd it? What make dyno?
    south ga corvette, winprep in ground dyno , eddy current

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