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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; I got mine dynoed with slp headers and ory / lid and put down 334 h.p. and 368 t.q. at ...

  1. #161
    Junior Member smg267's Avatar
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    2001 Z-28

    I got mine dynoed with slp headers and ory / lid and put down 334 h.p. and 368 t.q. at 90 degrees and 40% humitdy. All through the stock Z/28 catback! I am hoping for 340+ with a new catback.

  2. #162
    Member ErikElvis's Avatar
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    sunset orange
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    Quote Originally Posted by GA Country Boy View Post
    Damn ErikElvis you're a nice guy, but despite all my drag racing and other racing experience you're losing me. I don't know if it's a "generation" thing, but I don't have a clue what you're talking about!!! SFC's, STB, DD, ??? I think the LM2 is a wide band sensor, but...is this a "trekky" thing?
    BUT congrats on your time. It's a good start!
    Ha! SFC's = Sub frame connectors, STB = Strut tower brace, LM2 = SLP loud mouth 2 cat back. DD = Dual dual SLP exhaust. Could get the quiet version which I had or the loud mouth versions. Its the 2 pipe on each side set-up.

  3. #163
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    Quote Originally Posted by ErikElvis View Post
    Ha! SFC's = Sub frame connectors, STB = Strut tower brace, LM2 = SLP loud mouth 2 cat back. DD = Dual dual SLP exhaust. Could get the quiet version which I had or the loud mouth versions. Its the 2 pipe on each side set-up.
    Thanks for the info. It just goes to show you're never too old to learn something new! (And you're never too young to teach us 'oldies' a thing or two!)

  4. #164
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    stock i went 13.177 @ 110.24 m6
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  5. #165
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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.
    Its funny... my 1995 LT1 Automatic Z28 with 3.23s ran 14.1 @ 97mph on a 2.160ft. (76K on the clock and my trans required a rebuild a week later)...

    That seems to back the entire LT1 being rated on the low side.
    Since the LT1 was a 300hp motor... think about it.

    My 2001 M6 Z28 just ran 13.4 @ 104mph on a 2.1 60ft in 3200DA.

    I am guessing I have a little bit more than 305~310hp at the crank.

  6. #166
    Member GA Country Boy's Avatar
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    Quote Originally Posted by S8ER01Z View Post
    Its funny... my 1995 LT1 Automatic Z28 with 3.23s ran 14.1 @ 97mph on a 2.160ft. (76K on the clock and my trans required a rebuild a week later)...

    That seems to back the entire LT1 being rated on the low side.
    Since the LT1 was a 300hp motor... think about it.

    My 2001 M6 Z28 just ran 13.4 @ 104mph on a 2.1 60ft in 3200DA.

    I am guessing I have a little bit more than 305~310hp at the crank.
    I ESTIMATED the ET's based on the horsepower and weight indicated. IF YOUR LT1 weighed the same my estimate was exact at the same MPH and optimistic on the ET by three tenths. The same car can vary by three tenths with different drivers and also weather/track conditions. Mathematical calculations of ET's are not intended to be an exact science since there are so many variables involved, but used more as a general guide. IF ALL similar cars ran the same ET's there wouldn't be the amazing NHRA records set in the legal stock classes. For example, a '98 Camaro holds the C/FIA record of 10:68@124.20; an '02 Firebird holds the A/FIA record of 9:91@132.43.
    IF you want to know EXACTLY what your rear wheel horsepower is put it on the dyno, and then if you want to know what your flywheel horsepower is you can ESTIMATE it or pull your engine and put it on an engine dyno.Here is a link with a lot of good calculators, run your own numbers. www.wallaceracing.com/Calculators.htm
    Michael
    In GA waving from '02 C5 LS1, Z51, D1SC, 60lb injectors,RPM level 5-4L60E, 3:42, Yank 3600, QA1-12 ways, MTI long headers, high flow cats, Borlas, Wilwood, 603rwhp, 542rwtq.(DynoJet 248-C) 10.89@127.57 on street tires, Race Weight 3,640 lbs

  7. #167
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    Quote Originally Posted by GA Country Boy View Post
    I ESTIMATED the ET's based on the horsepower and weight indicated. IF YOUR LT1 weighed the same my estimate was exact at the same MPH and optimistic on the ET by three tenths. IF you want to know EXACTLY what your rear wheel horsepower is put it on the dyno, and then if you want to know what your flywheel horsepower is you can ESTIMATE it or pull your engine and put it on an engine dyno.Here is a link with a lot of good calculators, run your own numbers.
    I can see what you are saying... My LT1 actually tipped the scale at 3546lbs with me and a half tank of gas.

    It's pure fact that the 305/310hp rating from GM was bogus on the LS1. Some 8+ years later its still lost of people...

  8. #168
    The Bandit Wesman's Avatar
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    Quote Originally Posted by mogs01gt View Post
    you are giving the car WAYY too much credit. There are plenty of 14 second F-bodies and cars that do not dyno above 300.
    Umm no...any LS1 running 14's has something wrong with it. Plain and simple.

  9. #169
    Member GA Country Boy's Avatar
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    Quote Originally Posted by Wesman View Post
    Umm no...any LS1 running 14's has something wrong with it. Plain and simple.
    I don't know if I would put it exactly like that, but I think 13's should be easily
    achievable without any major mods.

  10. #170
    Member since 1998 DarthD's Avatar
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    Black ASC#7564 May11,2001
    2001 Trans Am WS6

    Quote Originally Posted by GA Country Boy View Post
    I don't know if I would put it exactly like that, but I think 13's should be easily
    achievable without any major mods.
    13's are achievable bone stock.



    If you guys want some magazine numbers here you go....

    Muscle Mustang & Fast Fords - 2002 Camaro 13.25 @ 106.4
    Rear Wheel Dyno 316.7hp 340.9 tq.
    Motor Week - 2002 Camaro 13.5 @ 108
    Motortrend - 2002 Camaro 13.5 @ 107.3
    Edmunds - 2001 Camaro - 13.8 @ 105.4
    Popular Mechanics - 2000 Camaro - 13.42 @ 106.2
    Motortrend - 2000 Camaro - 13.7 @ 105.6
    Car & Driver - 2000 Camaro - 13.7 @ 105.6
    Road & Track - 1999 Camaro - 13.9 @ 105.5
    Edmunds - 1999 Camaro - 14.0 @ 103.9
    Car & Driver - 1999 Camaro - 13.5 @ 107
    GM High Tech Performance - 1999 Camaro - 12.89 @ 107
    Chevy High Performance - 1999 Camaro - 13.34 @ 105.8
    Car & Driver - 1999 Camaro - 13.8 @ 104
    Road & Track - 1998 Camaro - 13.9 @ 102.5
    MSN - 1998 Camaro - 13.9 @ 107.6
    Popular Mechanics - 2000 WS6 Formula 13.15 @ 108.27
    Motortrend - 2000 WS6 13.5 @ 107.4
    Car & Driver - 2001 Firehawk 13.6 @ 106
    Motorweek - 1999 Firehawk 13.4 @ 106
    Car & Driver - 1999 Trans Am 13.9 @ 104
    Motortrend - 1998 Trans Am 13.4 @ 107.3
    Edmunds - 1999 WS6 Formula - 13.9 @ 107.6
    ALL OF THE ABOVE ARE 6 SPEED CARS

    BELOW ARE AUTOS
    High Performance Pontiac - 2002 WS6 13.13 @ 104
    Motorweek - 2002 WS6 13.50 @ 107

    I think I have more somewhere. I know I am missing the Camaro from Muscle Mustang that ran a 12.8X. I also know I have more Autos somewhere.

    I also have plenty of data from LT1 back and Mustangs, Corvettes, GTOs, and more. If someone wants to see anything else, let me know and I'll post what I have.

    I have been saving this stuff for years.
    Last edited by DarthD; 08-30-2006 at 10:30 PM.

  11. #171
    Member since 1998 DarthD's Avatar
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    Black ASC#7564 May11,2001
    2001 Trans Am WS6

    Here is some Dyno information...
    (I have been collection dyno sheets from stock cars for a while. I have averaged the numbers for each car to get the follwing)

    2002 Camaro SS T56 - 314 avg rwhp Rated FWHP 325-345
    2001 Camaro SS T56 - 314 avg rwhp Rated FWHP 325
    2000 Camaro SS T56 - 311 avg rwhp Rated FWHP 320
    (none SS cars averge about 7 hp less so far, but I do not have a very large sample size for them yet.)

    2002 Firebird WS6 T56 - 314 avg rwhp Rated FWHP 325
    2001 Firebird WS6 T56 - 315 avg rwhp Rated FWHP 325
    2000 Firebird WS6 T56 - 311 avg rwhp Rated FWHP 320
    2002 Firehawk T56 - 317 avg rwhp Rated FWHP 325 - 345

    It is interesting to note that I have seen no difference between the 2002 cars with and without the SLP 345 hp lid/muffler package.

    2006 Corvette Z06 T56 - 443 avg rwhp Rated FWHP 505
    2005 Corvette T56 - 351 avg rwhp Rated FWHP 400
    02-04 Z06 Corvette T56 - 353 avg rwhp Rated FWHP 405
    2001 Z06 Corvette T56 - 342 avg rwhp Rated FWHP 385
    1996 Grand Sport Corvette - 298 avg rwhp Rated FWHP 330

    2005 GTO T56 - 350 avg rwhp Rated FWHP 400

    2005 Mustang GT T5 - 265 avg rwhp Rated FWHP 300
    99-04 Mustang GT T5 - 230 avg rwhp Rated FWHP 260
    2001 Mustang Bullit T5 - 235 avg rwhp Rated FWHP 265
    2003 Mach I T5 - 275 avg rwhp Rated FWHP 305
    2004 Mach I T5 - 275 avg rwhp Rated FWHP 310
    2001 Cobra T5 - 275 avg rwhp Rated FWHP 320
    96-98 Cobra T5 - 261 avg rwhp Rated FWHP 305
    03-04 Cobra T56 - 366 avg rwhp Rated FWHP 390

    This data is taken from hundreds of bone stock dyno tests performed on different dynos across the country.

    I have more cars, but the sample size is still small for them.

    You can take the rated FWHP and subtract drivtrain loss to see which cars are underrated. Drivetrain loss for a manual seems to be around 12% when comparing numbers using GM's correction factor to the aftermarket correction factor.

    The LS1 Camaro's and Firebirds are WAY underrated.
    The 03-04 Cobra is underrated.
    The 2003 Mach I is a little underrated.
    The rest are pretty much right on.
    Last edited by DarthD; 08-30-2006 at 10:34 PM.

  12. #172
    Member GA Country Boy's Avatar
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    Did I say something you didn't like?

    I said: "I think 13's should be easily
    achievable without any major mods."
    You said: "13's are achievable bone stock."

    Is there a BIG difference between "no major mods" and "bone stock"?
    I'm not sure if anybody has a "bone stock" car anymore, but as I mentioned in another post there are NHRA stock LS1's setting records. For example, a '98 Camaro holds the C/FIA record of 10:68@124.20; an '02 Firebird holds the A/FIA record of 9:91@132.43.
    I said "13's should be easily achievable".
    But if it will make you happy I will retract my statement and remove 'major'.
    "I think 13's should be easily achievable without any mods".
    How's that?
    Oh yes AND LS1 Camaro's and Firebirds are WAY underrated.
    No arguments from me. I love 'F' bodies (especially older ones regardless of what they are rated at).
    I personally don't care what manufacturers rate their engines at. If I don't like the power I have I add more. Even my truck has a blower on it. I can't remember when I had a vehicle that was 'bone stock' at least not for long.

  13. #173
    Member since 1998 DarthD's Avatar
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    Black ASC#7564 May11,2001
    2001 Trans Am WS6

    I interpreted your statement to mean that LS1s are 14 sec cars that can dip into the 13's with a few mods. I see that is not what you meant.

    It is true that in bad conditions, bad traction, or a bad driver they will run 14's. I actually got a 14.6 one time when I dumped the clutch at 3000 rpms and spun hard all the way through first. I just wanted to see what would happen.

    With a normal off idle launch, then stabbing the gas after the clutch is out, and granny shifting, my car will run 13.7s at around 105 in hot humid Texas.
    I do not like to beat on my car as it is my daily driver.
    My WS6 is also bone stock except for the 45lb SLP sub frame connectors and strut tower brace.

  14. #174
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    My car is bone stock and i ran 13.4 @ 104mph with a 2.1 60ft and 3200DA... It was at the MFBA Cordova Rental so I have plenty of witnesses. If someone would like they can come tear my car apart looking for mods. Be my guest.

    Last edited by S8ER01Z; 08-31-2006 at 06:15 AM.

  15. #175
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    I have two articles that should provide "proof" if any exist to actually convince people.

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  17. #177
    Member since 1998 DarthD's Avatar
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    Black ASC#7564 May11,2001
    2001 Trans Am WS6

    I don't doubt you at all.
    Thanks for the links. I have been trying to find the first one for a while.
    Last edited by DarthD; 08-31-2006 at 06:09 PM.

  18. #178
    Member GA Country Boy's Avatar
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    Quote Originally Posted by S8ER01Z View Post
    I have two articles that should provide "proof" if any exist to actually convince people.
    I'm convinced you should be running a lot faster than you are (according to the article you told us to read). Why would you think anybody would doubt you're in the 13's when all the other stockers are too? Especially when stock LS1 auto 'F' Bodies have set records in the 9's and 10's. (See my previous post) Maybe if you
    had told us your "bone stock" car was running 8's we might be forgiven for being a little dubious, but not 13's.

  19. #179
    WishIHadAPantera
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    I really have to call BS

    Quote Originally Posted by GA Country Boy View Post
    Especially when stock LS1 auto 'F' Bodies have set records in the 9's and 10's.
    Not hating, but I really have to call BS when someone says a "stock" LS1 ran 9's and 10's.... I think this is probably a gross misrepresentation of the word "stock" and giving the little kiddies out there some very misinformed statements to go spread around as they bench race...

    Do you have any information as to what stock means? Does it mean stock internals? Because that's HUGELY different than "stock"? By that definition of stock the 4G63 import guys have gone nearly that fast...

    Stock to me means stock exhaust, stock clutch, stock airbox, stock rearend, stock ECU. stock tires, etc... No factory car with those types of things stock is going to run 9's or 10's....

  20. #180
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    Quote Originally Posted by WishIHadAPantera View Post
    Not hating, but I really have to call BS when someone says a "stock" LS1 ran 9's and 10's.... I think this is probably a gross misrepresentation of the word "stock" and giving the little kiddies out there some very misinformed statements to go spread around as they bench race...

    Do you have any information as to what stock means? Does it mean stock internals? Because that's HUGELY different than "stock"? By that definition of stock the 4G63 import guys have gone nearly that fast...

    Stock to me means stock exhaust, stock clutch, stock airbox, stock rearend, stock ECU. stock tires, etc... No factory car with those types of things stock is going to run 9's or 10's....
    Your interpretation of 'stock' is a liitle different from NHRA's which defines 'stock' in TEN pages of rules in their rulebook. The National Hot Rod Association (NHRA) has been the premier sanctioning organization of drag racing for more than 50 years and sanctions more than 5,000 events annually in the USA and Canada.
    The NHRA Stock class records I was referring to were:
    A/FIA 9:91@132.43 05/15/06 Ryan McClanahan, Alto Loma, CA '02 Firebird
    B/FIA 10:62 03/13/06 Frank Genovesi, Yorktown, NY '98 Firebird
    C/FIA 10:68@124.20 04/04/06 Jack Matyas, Bethlehem, PA '98 Camaro
    www.nhra.com/stats/stk_record.html

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