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Thread: highest HP stock block SC

  1. #1
    Join Date
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    highest HP stock block SC

    What is the highest rear wheel horse power for a stock SC 3.8
    long block ?

    3.8 SC Thunderbird or XR7 that is using a M90 blower casting?
    And running only pump gas, with all the after market bolt-ons.

    Thanks Randy
    Last edited by Randy N Connie; 11-14-2005 at 06:51 PM.

  2. #2
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    I am acutally curious about this. I would think that anythin over 470 would be about it. I know there is going to be someone to say that its stupid but I dont think the guys running right at the 400 mark would agree. In the event that 470 would be achieved, I would have to say that a valley brace should be used. Maybe even cut a set of 4 bolt mains but I think the upper twist with the SC will be the death. I have not even heard of a block cracking on a 3.8 but given the direction we are headed, I would be willing to bet its coming.

    Chris

  3. #3
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    dave said hes running on a stock bottom end.. well he has alcohol injection, but still probably fills up at the pump obviously .

  4. #4
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    Well he said long block.

    That to me would mean stock cam with a stock profile and unported heads.

  5. #5
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    I think I'll be claiming this title next season. I will not be porting the heads or doing a cam. I figure I should be able to get up to 300 HP (wheel) with a FMIC and some more boost.

  6. #6
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    Deleting post...my mistake. Thanks for correcting me Scott.
    Last edited by 90blkbrd; 11-14-2005 at 08:53 PM.

  7. #7
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    yeah but Jake and XR7 Dave aren't using M90's anymore.
    Scott Long
    1992 SC 5-speed
    Black on black leather, lowered, 18x9 Chrome Saleens...

  8. #8
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    Would this include MPII and MPIII? What about nitrous?

    I was looking at this thread. David was questioning most RWHP from the M90.

    http://www.sccoa.com/forums/showthre...&highlight=m90

  9. #9
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    Quote Originally Posted by 90blkbrd
    Would this include MPII and MPIII? What about nitrous?
    My question would include any M90 modified blower case.
    No nitrous,or alky injection.Just pump gas from the local
    gas station for fuel.

    Just a stock long block motor with bolt-ons.

    I have heard some drag race ET.s of 13.5s .
    But no RWHP numbers.

    Thanks Randy

  10. #10
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    I made 269rwhp and 388rwtq with MP inlet, BTM 5%, intake and exhaust.

    I'm not the highest hp stock internal SC though.
    1994 SC
    4.5L Twin Turbo SVO
    Project GTFD

  11. #11
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    Pretty sure Kurt K made some pretty impressive runs on a bolt on M90 SC. Ran something like a 13.6 before it let go?

    Thomas

  12. #12
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    St. Charles, MO
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    Randy,

    I don't think you can expect more than about 275 RWHP with an AOD. I don't know if anyone has done better than that or not.

    David
    1991 SC AOD 4.2..2.3 Whipple..........10.910 @ 125.61
    2016 SRT Challenger Hellcat...............707HP/650TQ

    My Garage

  13. #13
    Join Date
    Jan 2003
    Location
    Woodbridge, VA
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    5,084
    I ran 13.59 at 100 mph with 240 rwhp and 340 rwtq, before my balancer went and took the crank with it. I have gasket matched heads and intake with 1.80 RR. Car weighed at the track with me in it 4000 #'s. Jason Miller made quite a bit more hp than me with the MPII but ran out of injector and never got to the track before his head gaskets went, he's under rebuild now.
    ~Chris
    SCCoA Member #1826
    Bettie Riding jack stands
    SCARlet on drag duty now

  14. #14
    Fast Specialties made 318 rwhp SAE on a completely stock long block SC with the MPIII and a 70mm throttle body @ 15% overdrive on 92 octane pump gas. The engine has 100,000 miles on it and features a stock intercooler, no IC fan, no headers and some kind of a homemade exhaust.

    BTW, it was on a Mustang dyno that reads 4% lower then two DynoJets in our area.

    Charles

  15. #15
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    Quote Originally Posted by Magnum Powers
    Fast Specialties made 318 rwhp SAE on a completely stock long block SC with the MPIII and a 70mm throttle body @ 15% overdrive on 92 octane pump gas. The engine has 100,000 miles on it and features a stock intercooler, no IC fan, no headers and some kind of a homemade exhaust.

    BTW, it was on a Mustang dyno that reads 4% lower then two DynoJets in our area.

    Charles
    There are lots of ways to get varying results from a dyno. I'd like to see one of these high HP cars hit the track. Just one. Even if the car is granny shifted and eased off the line it should easily pull 106-108mph at the track. Until I see that I think it's a little bit of smoke and mirrors.
    Quote Originally Posted by Miller View Post
    Ya thats why i tape mine down. People think its bc i dont have a moonroof seal (which is true) but its really to keep my roof from ripping off .
    Email me here.

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