Made a "little" noise today
+ Reply to Thread
Page 1 of 2 1 2 LastLast
Results 1 to 14 of 26

Thread:
Made a "little" noise today

  1. #1
    Resident Ford Nut Sleeper CP's Avatar
    Join Date
    Dec 2007
    Location
    San Diego County
    Posts
    10,072

    Default Made a "little" noise today

    Pulled the 342" ( 4.00 x 3.40) out of the Mustang Bonneville car and put it on the dyno. Dad had the build sheet from the guy who owned the car and it seemed like a stought little engine:



    The engine needs a little re-fresh as it over-heated 3 times at Bonneville and has a small water leak at a head gasket. We decided to run it to see what it makes for power. On the salt it would only pull 6,300 in 3rd which I thought was 400-500 below peak power.
    1988 Mustang Gt went 179.79 on the 5 mile course with this engine ........ 6,300 rpm and 62 psi oil pressure.

    Engine specs:

    342" ( 4.00" x 3.40")

    AFR 205 heads, ported ( no flow numbers...sorry)

    12.5:1 Probe pistons, Akerly and Childs rings

    Holley HP 750 carb

    Edelbrock Vic jr intake ported.

    Cam.. solid roller: dur at .050 254/266, .637/.657 lift, 110 lobe sep.

    So what's your best guess on power?

    Made a couple of pulls then pulled the Holley hP 750 and replaced it will my C&J Engineering modified Demo 750 with a Holley 850 base plate to see what it would do.

    Made a total of 7 pulls and was done.... 4 pulls with the Holley and 3 with the demo with a re-jetting.

    Best guess ? HP and trq w/ RPM

    I'll post dyno results tommorrow night.

    S CP
    Last edited by Sleeper CP; 05-01-2012 at 10:19 PM.

    "Dark Sarcasm"
    Going fast is only half the fun ... what you make go
    fast is the other half.
    " A Government big enough to give you everything you want is big enough to take away everything you have"

  2. Remove Advertisements
    PerformanceBoats.com
    Advertisements
     

  3. #2
    Senior Member
    Join Date
    Dec 2007
    Location
    Green Bay Wi,USA
    Posts
    441

    Default

    I will guess 509 hp at 7200.

  4. #3
    Resident Ford Nut Sleeper CP's Avatar
    Join Date
    Dec 2007
    Location
    San Diego County
    Posts
    10,072

    Default

    See edit


    S CP

    "Dark Sarcasm"
    Going fast is only half the fun ... what you make go
    fast is the other half.
    " A Government big enough to give you everything you want is big enough to take away everything you have"

  5. Remove Advertisements
    PerformanceBoats.com
    Advertisements
     

  6. #4
    gn7
    gn7 is offline
    Senior Member gn7's Avatar
    Join Date
    Jan 2008
    Posts
    25,975

    Default

    Mmmmmmm.......I am guessing.......150 less than a crate 5.3 LS



    100% free webcam site! | Awesome chicks and it is absolutely free! | Watch free live sex cam - easy as 1-2-3

  7. #5
    Senior Member MACHINEHEAD1's Avatar
    Join Date
    May 2008
    Posts
    473

    Default

    526/6700 and 480ft/lbs at 5100.

  8. #6
    Resident Ford Nut Sleeper CP's Avatar
    Join Date
    Dec 2007
    Location
    San Diego County
    Posts
    10,072

    Default

    Quote Originally Posted by gn7 View Post
    Mmmmmmm.......I am guessing.......150 less than a crate 5.3 LS
    bite me.................


    S CP

    "Dark Sarcasm"
    Going fast is only half the fun ... what you make go
    fast is the other half.
    " A Government big enough to give you everything you want is big enough to take away everything you have"

  9. #7
    steelcomp was here
    Join Date
    Dec 2007
    Location
    n/e TN
    Posts
    26,280

    Default

    545/66-6700
    475/5000-5100
    Last edited by scott foxwell; 05-02-2012 at 09:29 AM.
    If God is your co-pilot, change seats!
    Acts 2:38, the perfect answer to the perfect question.

  10. #8
    Resident Ford Nut Sleeper CP's Avatar
    Join Date
    Dec 2007
    Location
    San Diego County
    Posts
    10,072

    Default

    My guess going into this was 525 @ 6,800, 425 lbs ft @ 5,800:

    Yesterdays results with the HP 750 with dyno headers 1 3/4":

    495Hp at 7,000, 407 lbs ft at 5,900


    With modified Demo 750 with an 850 Holley base: C&J Engineering
    from 2004

    507 hp @ 7,000, 413 lbs ft @ 5,400

    Today: With Kooks stepped/merge collector headers 1 3/4 - 1 7/8" Fox body headers

    520 hp @ 7,000, 420 lbs ft @ 5,400

    engine was making 517 @ 7,200 where we stopped

    We made two pulls and were done.. second pull made peak of 518 at 7,000 - 7,200

    We did a leak-down after the warm-up

    5 cylinders leaking 3%, 2 were leaking 4% and 1 was 5%.

    The guy who built the engine in 2005 advertised it as a 500hp 342 long block. This is a happy little engine.

    Heads will come off and we will check the bearings and it's ready to run another year.

    S CP

    Jon
    Last edited by Sleeper CP; 05-02-2012 at 05:14 PM.

    "Dark Sarcasm"
    Going fast is only half the fun ... what you make go
    fast is the other half.
    " A Government big enough to give you everything you want is big enough to take away everything you have"

  11. #9
    Resident Ford Nut Sleeper CP's Avatar
    Join Date
    Dec 2007
    Location
    San Diego County
    Posts
    10,072

    Default

    Quote Originally Posted by DEL51 View Post
    I will guess 509 hp at 7200.

    Very good guess for day 1.

    Who did you talk to ?


    S CP

    "Dark Sarcasm"
    Going fast is only half the fun ... what you make go
    fast is the other half.
    " A Government big enough to give you everything you want is big enough to take away everything you have"

  12. #10
    Senior Member MACHINEHEAD1's Avatar
    Join Date
    May 2008
    Posts
    473

    Default

    Steel and I were on the mark. Might be able to run 91(10 to 1) octane. HP strong, whoop that trik again!

  13. #11
    Senior Member MACHINEHEAD1's Avatar
    Join Date
    May 2008
    Posts
    473

    Default

    While the heads are off, check for a lump on the piston!

  14. #12
    gn7
    gn7 is offline
    Senior Member gn7's Avatar
    Join Date
    Jan 2008
    Posts
    25,975

    Default

    I thought in the original post Sleeper said it had 12.5 Probe pistons.



    100% free webcam site! | Awesome chicks and it is absolutely free! | Watch free live sex cam - easy as 1-2-3

  15. #13
    Resident Ford Nut Sleeper CP's Avatar
    Join Date
    Dec 2007
    Location
    San Diego County
    Posts
    10,072

    Default

    Quote Originally Posted by gn7 View Post
    I thought in the original post Sleeper said it had 12.5 Probe pistons.

    I think he's suggesting it's not 12.5:1 as advertised.

    I think it is.

    S CP

    "Dark Sarcasm"
    Going fast is only half the fun ... what you make go
    fast is the other half.
    " A Government big enough to give you everything you want is big enough to take away everything you have"

  16. #14
    Resident Ford Nut Sleeper CP's Avatar
    Join Date
    Dec 2007
    Location
    San Diego County
    Posts
    10,072

    Default

    The basics from a couple of pulls:




    S CP

    "Dark Sarcasm"
    Going fast is only half the fun ... what you make go
    fast is the other half.
    " A Government big enough to give you everything you want is big enough to take away everything you have"

+ Reply to Thread
Page 1 of 2 1 2 LastLast

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

Please select your insurance company (Optional)

Log-in

Tags for this Thread

Digg This Thread

Posting Permissions

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
  •  
 

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95