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HP Question

This is a discussion on HP Question within the Camaro / SS forums, part of the Vehicle Specific category; I had a 94 Z28 and traded up to a 99 SS, what kind of hp difference is there between ...

  1. #1
    Junior Member enjun's Avatar
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    HP Question

    I had a 94 Z28 and traded up to a 99 SS, what kind of hp difference is there between stock LT1 and the LS1. I read somewhere the LS1's where underated

  2. #2
    Member Mjolnir's Avatar
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    well id say the lt1 is about 280 hp and the ls1 is going to be hitting 305 but since you have the ss its got ram air which is going to help you out to around 335?

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    the lt1 motor and the ls1 motor is underated. they do this for insuarnce purposes. they will only run them to like 4,700 rpm to 5,100 rpm on the dyno. but still have room to push. all in all i know the LT1 last a lot longer than ls1. and if tou mess something up on the ls1 block your screwed because its all aluminum. i would say a stock 95 Z28 6 speed has right at 300 hp and the LS1 motor has 310-315 on a Z28. SS LT1 has 330hp and a SS LS1 has 330. well its supposed to any way. i have seen a stock 2002 corvette dyno at 376 hp and 381lb of torque no bull crap. completelt stock motor and exhaust. dynoed before and after head and cams set up. i couldnt believe it. so i guess they might be a litlle underated.

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    i would definatly love to have an LS1 SS though. They are so tight looking.

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    Sarge for AAG Emperor hutch1999's Avatar
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    Quote Originally Posted by minesfasterx2 View Post
    the lt1 motor and the ls1 motor is underated. they do this for insuarnce purposes. they will only run them to like 4,700 rpm to 5,100 rpm on the dyno. but still have room to push. all in all i know the LT1 last a lot longer than ls1. and if tou mess something up on the ls1 block your screwed because its all aluminum. i would say a stock 95 Z28 6 speed has right at 300 hp and the LS1 motor has 310-315 on a Z28. SS LT1 has 330hp and a SS LS1 has 330. well its supposed to any way. i have seen a stock 2002 corvette dyno at 376 hp and 381lb of torque no bull crap. completelt stock motor and exhaust. dynoed before and after head and cams set up. i couldnt believe it. so i guess they might be a litlle underated.
    where are you getting you information, it seems to be off

  6. #6
    Senior Member rajiv1998's Avatar
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    Quote Originally Posted by minesfasterx2 View Post
    the lt1 motor and the ls1 motor is underated. they do this for insuarnce purposes. they will only run them to like 4,700 rpm to 5,100 rpm on the dyno. but still have room to push. all in all i know the LT1 last a lot longer than ls1. and if tou mess something up on the ls1 block your screwed because its all aluminum. i would say a stock 95 Z28 6 speed has right at 300 hp and the LS1 motor has 310-315 on a Z28. SS LT1 has 330hp and a SS LS1 has 330. well its supposed to any way. i have seen a stock 2002 corvette dyno at 376 hp and 381lb of torque no bull crap. completelt stock motor and exhaust. dynoed before and after head and cams set up. i couldnt believe it. so i guess they might be a litlle underated.
    Theres no way in hell any stock LS1 has 381 rwhp. I Last time i checked LT1 SS and LS1 SS dont dyno near same #'s

  7. #7
    SICC SYDE Member BlueByU-SS's Avatar
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    381? bro wat ever your smokin send some my way.. that hing had at least be a zo6

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    Quote Originally Posted by minesfasterx2 View Post
    the lt1 motor and the ls1 motor is underated. they do this for insuarnce purposes. they will only run them to like 4,700 rpm to 5,100 rpm on the dyno. but still have room to push. all in all i know the LT1 last a lot longer than ls1. and if tou mess something up on the ls1 block your screwed because its all aluminum. i would say a stock 95 Z28 6 speed has right at 300 hp and the LS1 motor has 310-315 on a Z28. SS LT1 has 330hp and a SS LS1 has 330. well its supposed to any way. i have seen a stock 2002 corvette dyno at 376 hp and 381lb of torque no bull crap. completelt stock motor and exhaust. dynoed before and after head and cams set up. i couldnt believe it. so i guess they might be a litlle underated.
    That because the 02 vets had the LS-6 heads and cam...!!!
    the Zo6
    Last edited by WARP211; 02-25-2007 at 04:39 PM. Reason: forgot some info..

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    Sarge for AAG Emperor hutch1999's Avatar
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    Quote Originally Posted by WARP211 View Post
    That because the 02 vets had the LS-6 heads and cam...!!!
    the Zo6
    He didnt say it was a Zo6, all he said was it was a stock 2002 corvette. Stock non Zo6s didnt come close to those numbers. Your it probly right that it was a Zo6, by the numbers he gave but he didnt say it was.

  10. #10
    2000pontiac6
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    Quote Originally Posted by Mjolnir View Post
    well id say the lt1 is about 280 hp and the ls1 is going to be hitting 305 but since you have the ss its got ram air which is going to help you out to around 335?
    30hp just from ram air???? I would think maybe 15

  11. #11
    Firebird Encyclopedia 9T8W66's Avatar
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    There is a 40-50 Hp difference at the rear wheels
    Most LT1's average between 240-260 RWHP
    Most LS1's average between 285-315 RWHP
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  12. #12
    This Light Dinner Is Over hamburger68's Avatar
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    some fresh info: been on the dyno today

    1998 Z28 A4, stock ex. lid+filter, 3" Dynomax catback and HPP3.

    Here in Germany, the measuring standards are a little different, so the stock engine is rated at 288 hp over here.

    Mine dynoed today at 363.

    Yes, the LS1 is underrated.

  13. #13
    Senior Member rajiv1998's Avatar
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    Quote Originally Posted by hamburger68 View Post
    some fresh info: been on the dyno today

    1998 Z28 A4, stock ex. lid+filter, 3" Dynomax catback and HPP3.

    Here in Germany, the measuring standards are a little different, so the stock engine is rated at 288 hp over here.

    Mine dynoed today at 363.

    Yes, the LS1 is underrated.
    I dont think ur making 363 with ur mods. Either its a typo or u didnt list all ur mods.

  14. #14
    This Light Dinner Is Over hamburger68's Avatar
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    no typo, and the mods are all there. but really, maybe it has to do with the measuring, german vs. us standards.
    the chart is in KW, but the conversion to hp is correct: 100 kilowatt are 136 hp. 267 kw = 363 hp

    honestly, i was stunned, too, but the shop is certified and out of doubt.
    Last edited by hamburger68; 11-16-2007 at 03:18 PM.

  15. #15
    SMKDFRD
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    WOW. I thought this guy was off the mark by a mile when i read what type of numbers that RAM AIR can put up. The stock camaro ss has 325rwhp@5200 and 350rwt@4000 rpm.

  16. #16
    This Light Dinner Is Over hamburger68's Avatar
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    intake and exhaust are restrictive on the ls1 f-bodies, especially the z28. that's why first mods should concentrate on those areas. small effort = big gain

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