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Can you guess my horsepower?

This is a discussion on Can you guess my horsepower? within the General Help forums, part of the LSx Technical Help Section category; SO.. I finally got my lid installed (easier than I thought)..... You can tell by my # of posts, I ...

  1. #1
    Junior Member MarcusJ's Avatar
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    1999 Camaro Z28

    Can you guess my horsepower?

    SO.. I finally got my lid installed (easier than I thought)..... You can tell by my # of posts, I am still new to LS1.com, but in total I have the following FEW mods..

    K&n Filter
    SLP Lid (lid only, not the whole kit)
    Flowmaster (not sure which series, they were on the car when I bought it).

    So with that said, let the guessing begin. I am thinking in the 320ish range? Am I patting myself on the back too much with that guess? Thanks for any info you can give me!

  2. #2
    Pony_eater Pony_Eater's Avatar
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    2000 trans am ws6

    305

  3. #3
    Just me Y2KPewterSS's Avatar
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    Pewter metallic
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    Manual or auto tranny?

    305-310 range. 320 is probably being too optimistic.

  4. #4
    Slow'er'Ass Mr. Luos's Avatar
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    Red Tint Jewelcoat
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    Depends on the dyno and transmission type.


    Anywhere from 275RWHP (mustang dyno and automatic) to 315RWHP (dynojet and manual).
    2008 Trailblazer SS
    Yank PTB3600, Kooks 1 7/8" LT's, 4" intake, E-fans, Magnaflow, Sonnax kit, tranny cooler, tune.
    Lowered, HID's, tinted.

    1999 Pontiac Trans Am WS.6 #1747 SOLD
    531.1 RWHP 481.3 FT/Pounds all motor.

  5. #5
    Moderator 35th-ANV-SS's Avatar
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    Depends on what Dyno you have your car tested on. Mustang Dyno's range around 280 stock. Dyno Jets hover around 300.

    With a lid and exhaust, I would guess you added maybe 15hp.

    So, my guess is about 310 on a DynoJet if you are a M6.

  6. #6
    Moderator 35th-ANV-SS's Avatar
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    02 35th LE Camaro SS

    Quote Originally Posted by Mr. Luos View Post
    Depends on the dyno and transmission type.


    Anywhere from 275RWHP (mustang dyno and automatic) to 315RWHP (dynojet and manual).
    Ha Curtis. Beat me to it!

  7. #7
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    2002 SS

    Pump your tires up to 40 psi for the run I'm going to guess 311 rwhp dynojet. let us know !!

  8. #8
    🤔 11s. blackbirdbrain89's Avatar
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    black trans am
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    ill give it a 310. brun ur tires down to the cords so u have less rotating mass on ur axles

  9. #9
    Senior Member Z28boy2000's Avatar
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    2000 Camaro B4C

    im gunna guess 307


    but theres only one way to find out.....dyno
    2000 B4C Special Service Package Z28 - Kooks 1&7/8 Stepped 2'' - TSP Torquer V.2 - FAST 92/92 - BDR 4000 Conveter - Xtreme Trans Stage II - Full UMI Suspension - Pacesetter LT's - Comp Drag Shocks - Magnaflow - Cutout - ZO6 MAF - FTP LID - Street Tuned -

  10. #10
    Junior Member MarcusJ's Avatar
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    Thanks to everyone for their guesses and educational insight. I know where I'm taking it to get dyno'd but I am not sure what type he has. When I post the numbers I will let you know. Should be in 2 weeks-ish though. If I have 310 to the rear wheels I will be happy!

  11. #11
    Junior Member MarcusJ's Avatar
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    Quote Originally Posted by 35th-ANV-SS View Post
    Depends on what Dyno you have your car tested on. Mustang Dyno's range around 280 stock. Dyno Jets hover around 300.

    With a lid and exhaust, I would guess you added maybe 15hp.

    So, my guess is about 310 on a DynoJet if you are a M6.

    I am an running an A4.

    BTW, that is a VERY nice 35th Anvs. you have. Quite possibly the nicest I have seen on ls1.com! And I'm serious!

  12. #12
    Moderator 35th-ANV-SS's Avatar
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    Quote Originally Posted by MarcusJ View Post
    I am an running an A4.

    BTW, that is a VERY nice 35th Anvs. you have. Quite possibly the nicest I have seen on ls1.com! And I'm serious!
    Thank you. There are A LOT of VERY nice cars on this site. We all have a love and respect for our cars and that is why we come together on this site.

    Good luck with your DYNO. And, don't be discouraged on your final DYNO numbers if they happen to come in low. They are just numbers.

    The most important thing is having a car that runs strong and is reliable.

  13. #13
    Junior Member MarcusJ's Avatar
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    Quote Originally Posted by 35th-ANV-SS View Post
    Thank you. There are A LOT of VERY nice cars on this site. We all have a love and respect for our cars and that is why we come together on this site.

    Good luck with your DYNO. And, don't be discouraged on your final DYNO numbers if they happen to come in low. They are just numbers.

    The most important thing is having a car that runs strong and is reliable.


    Indeed their are very nice cars on this site. And thanks for the words of wisdom. I will retaliate with these ones; your modesty is great but recognize your car is still gorgeous and right up there at least cosmetically with the best ones.

  14. #14
    Senior Member karpetcm's Avatar
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    Id say 295-305 RWHP on a dynojet.

  15. #15
    its short but its skinny. jiveass's Avatar
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    pewter
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    285....dynojet

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