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How fast does a 6sp/ls1 go

This is a discussion on How fast does a 6sp/ls1 go within the Firebird / WS6 forums, part of the Vehicle Specific category; How fast does a stockish/bolt on 6 speed ls1 go in 1-6 with 3.42's Does this look close? Just curious. ...

  1. #1

    How fast does a 6sp/ls1 go

    How fast does a stockish/bolt on 6 speed ls1 go in 1-6 with 3.42's

    Does this look close? Just curious. I rarely look down at the speedo when im messin around.

    First- 59
    Second- 80
    Third- 105
    Forth- 130
    Fifth- 165
    Sixth- X

  2. #2
    Member c5z28's Avatar
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    Top speed is achieved in 5th.

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    Sold: LS1 '85 El Camino ls1camino's Avatar
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    I pulled 186mph when I had my 3.42s. Now that I have 4.10s I can get to 160mph before I back off due to the engine spinning at 6000+ for longer than I'd like.

  4. #4
    Quote Originally Posted by c5z28 View Post
    Top speed is achieved in 5th.
    I know that. Jw what the max speed is in 1-4.

  5. #5
    Quote Originally Posted by ls1camino View Post
    I pulled 186mph when I had my 3.42s. Now that I have 4.10s I can get to 160mph before I back off due to the engine spinning at 6000+ for longer than I'd like.
    186? I thought top speed was 162ish

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    Member Benner's Avatar
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    Quote Originally Posted by Mike0202 View Post
    186? I thought top speed was 162ish
    modded and with limiter removed

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    Slow'er'Ass Mr. Luos's Avatar
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    Mine tops out at 124.

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    Member blackbird0230's Avatar
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    Quote Originally Posted by Mr. Luos View Post
    Mine tops out at 124.

    Lol in the 1/4 mile.

    Top of 4th is 138mph for me. Give er take a few mph for different mods

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    Sold: LS1 '85 El Camino ls1camino's Avatar
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    Quote Originally Posted by Benner View Post
    modded and with limiter removed

  10. #10
    Quote Originally Posted by blackbird0230 View Post
    Lol in the 1/4 mile.

    Top of 4th is 138mph for me. Give er take a few mph for different mods
    Sounds about right. I might have hit 110 in third. If not it was pretty close. I wonder what top speed would be with the limiter removed on a stockish car.
    Last edited by Mike0202; 10-03-2010 at 09:09 AM.

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    Slow'er'Ass Mr. Luos's Avatar
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    Quote Originally Posted by blackbird0230 View Post
    Lol in the 1/4 mile.

    Top of 4th is 138mph for me. Give er take a few mph for different mods
    Overall.

    I refuse to torture my T56 by going WOT in OD gears.
    124 is the top of 4th gear on a 26" tire....spinning to 6700.


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    Senior Member Lunatikgixxer's Avatar
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    Quote Originally Posted by ls1camino View Post
    I pulled 186mph when I had my 3.42s. Now that I have 4.10s I can get to 160mph before I back off due to the engine spinning at 6000+ for longer than I'd like.
    how did you know you went that fast? Im not doubting you im jw how did you find that out. Thats hauling ass! lol

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    Quote Originally Posted by Lunatikgixxer View Post
    how did you know you went that fast? Im not doubting you im jw how did you find that out. Thats hauling ass! lol
    Probably GPS.

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    I have been 148 in a automatic ws6.
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    Senior Member Too Fast's Avatar
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    Quote Originally Posted by Mike0202 View Post
    How fast does a stockish/bolt on 6 speed ls1 go in 1-6 with 3.42's

    Does this look close? Just curious. I rarely look down at the speedo when im messin around.

    First- 59
    Second- 80
    Third- 105
    Forth- 130
    Fifth- 165
    Sixth- X
    No that does not look close. You can't rev to 59 MPH in 1st gear, stockish! You'd be about 6200 RPM at about 47 MPH in first, I am always hitting the rev limiter (6200) in 3rd at the drag strip, so I have to shift into 4th for more speed, and I usually trap near 107. Stock size tires, stock 3.42 rear gears. I don't have the exact RPMs right now, but no way you do 59 in 1st gear, or shift out of 3rd at 105. Only number that looks right is your 5th gear speed.

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    Slow'er'Ass Mr. Luos's Avatar
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    Quote Originally Posted by Too Fast View Post
    You'd be about 6200 RPM at about 47 MPH in first
    52MPH in 1st at 6200RPM on a stock size tire.

    www.f-body.org/gears

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    Quote Originally Posted by Lunatikgixxer View Post
    how did you know you went that fast? Im not doubting you im jw how did you find that out. Thats hauling ass! lol
    Quote Originally Posted by pajeff02 View Post
    Probably GPS.
    Yeah, my brother was manning the GPS unit from the passenger seat.

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    Speak the truth jad628's Avatar
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    This brings up the question I have about 6th. Anybody know with 3.42 gear what HP is needed to make 6th the top speed gear (meaning it will exceed what is possible in 5th, even if maximum rpm's aren't at limiter)?

  19. #19
    dbl clutch'n like i shld WICKEDLS1's Avatar
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    Quote Originally Posted by jad628 View Post
    This brings up the question I have about 6th. Anybody know with 3.42 gear what HP is needed to make 6th the top speed gear (meaning it will exceed what is possible in 5th, even if maximum rpm's aren't at limiter)?
    way to fast that what

  20. #20
    Member BrntWS6's Avatar
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    Some of you guys are nuts, I raced a new Camaro to 140 and was pretty nervous. Any little thing happens your fucked. Car moves over a lane, deer, who knows. Even though it was late on a highway and traffic was light. Maybe I'm just getting old.

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