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455 Ls1

This is a discussion on 455 Ls1 within the Firebird / WS6 forums, part of the Vehicle Specific category; The guy I bought my car from also had another T/A this is what he has done to it since ...

  1. #1
    running on empty Madcity T/A's Avatar
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    2000 Pontiac Trans Am WS6

    Thumbs up 455 Ls1

    The guy I bought my car from also had another T/A this is what he has done to it since he sold me the other.
    he had it bored and stroked out to 455
    550RWHP and 640 at the crank nerly jizzed my pants.




  2. #2
    LTX N20LT4's Avatar
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    10's N/A

    I've heard some interesting things about those, notably the thin walls on the block. Be careful not to spray it or anything like that

  3. #3
    running on empty Madcity T/A's Avatar
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    its not mine

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    Giant Dicks Car Club Zapper2003's Avatar
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    that motor is sexy, but those headers are the fucking sex. I love em.

  5. #5
    Rice Killa JwMonE99's Avatar
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    Can you say bonner?

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    Member SAGGIN's Avatar
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    that thing is beautiful........

  7. #7
    Member Mike's TA's Avatar
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    I Want One!!!!

  8. #8
    Double Tap Heartbreak1's Avatar
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    Montego Blue
    '07 BMW 328Xi Coupe

    I believe TSP sells a built 455 block, im sure it costs an arm and a leg tho. Looks like a bad ass setup especially with those AFR heads. I know the guy that owns that company. Very very nice.

  9. #9
    Member 1TA LS1's Avatar
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    2001 Pontiac Trans Am WS6


  10. #10
    someday joejenkinsglass's Avatar
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    green
    98 formula

    you can build one with an iron lsx block and spray it or force feed it safely its not real cheap though

  11. #11
    Impounded
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    Forget iron blocks i have seen a 472 alum block with 28psi of boost on it, made almost 1500rwhp and it was all aluminium, built custom alum blocks can hold insane hp.
    Last edited by Y2KPewterSS; 08-10-2007 at 05:04 PM. Reason: Removed curse word

  12. #12
    Rice Killa JwMonE99's Avatar
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    Summitracing sells the 572 and 602...

  13. #13
    ArtistFormerlyKnownAsMac Silver Streak's Avatar
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    All Black
    83, 87, 02 All WS6 T/As

    Hmm.. I've heard boring an LS1 isn't a good idea... like above.. thin walls....
    -Geno
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    Sold the other four f-bodies

  14. #14
    Impounded
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    To a 455 bad idea, 402 or 408 isnt too bad

  15. #15
    someday joejenkinsglass's Avatar
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    green
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    Quote Originally Posted by 2000T/A Guru View Post
    Forget iron blocks i have seen a 472 alum block with 28psi of boost on it, made almost 1500rwhp and it was all aluminium, built custom alum blocks can hold insane hp.
    the iron block was designed to handle 2500 hp iron is more stable than aluminum and you could actually buy the lsx block aluminum is awesome for the weight savings but the cost can be crazy and other than on this thread I have not seen a ls1 block bored and stroked to that size I think even with a max bore sleeve kit and huge stroke (with a decent rod angle) the ls2 would not be any bigger than say 430 cid I am sure someone is gonna say thats wrong but in my opinion a smaller cid engine that last is way better than a maxed out one that breaks

  16. #16
    Verry Nice! 1LE4ME's Avatar
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    Cayenne Red
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    You think they put sleeves in it? It looks like from the first pic that they had to.
    1998 Camaro Z28 1LE: TR Cam (plus normal cam install upgrades), Ceramic coated Pacesetter Headers, ORY, SLP Loudmouth (SOOOO Loud), B&M shifter, Lid, All free mods, Tubular Panhard, LS7 Clutch

    1978 Firebird: Chevy 350, 4 bolt to many mods to list

  17. #17
    Run what you brung
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    so.... tell me. with no coolant gallies anymore how does he plan to get coolant from the heads? other than having it pour directly in the cyl.

    also with those big notches from where the oil gallies were whats to stop the sleeves from spinning inside the motor as well as stop them from coming in contact with the heads upon every revolution?

  18. #18
    your parts guy!!! 1fastcamarosss11's Avatar
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    trans am 00 ws6
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    Quote Originally Posted by 1LE4ME View Post
    You think they put sleeves in it? It looks like from the first pic that they had to.
    yes they had to,

    also 550 rwhp isn't that impressive for all those cubes.

  19. #19
    running on empty Madcity T/A's Avatar
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    thats what he told me??? he ran a 10.9 in NC soooooo he might be more.

  20. #20
    Senior Member slims00ls1z28's Avatar
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    2005 GTO M6 Black
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    There was one in Popular Hot rodding a few months back with a black bird with a built 455 running a speed density tune. Cant remember the numbers but it was bad to say the least.

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