514 BBF Dyno Issue
+ Reply to Thread
Page 1 of 11 1234 ... LastLast
Results 1 to 14 of 144

Thread:
514 BBF Dyno Issue

  1. #1
    Member 1980condor460's Avatar
    Join Date
    Jan 2008
    Location
    Newcastle
    Posts
    67

    Default 514 BBF Dyno Issue

    My Freshly built 514 went to the dyno today to some very dissapointing numbers. With that said I need some help - I didn't expect my engine's first pass to end up with 422hp. Don't remember the tq off the top of my head, it was less than the hp. I haven't seen the printout so I don't even know how many rpms it pulled.

    Here are some specs -
    514 rotating assembly bored .80 over with Flat top forged pistons. Dove C heads. Tunnel Ram with dual 650 carbs. Cam is a Comp 34-343-4. Gross Valve lift - .640 intake and .640 exhaust. Duration @ .050 is .262 intake and exhaust. 3 angle valve job has been completed on the heads but I do not have flow numbers.

    Any ideas on what can be holding me back? To much Cam, not enough flow? My mechanic said there is some corrosion on the carbs but the engine was not running lean during the initial pull. He is going to rebuild the carbs and go again.

  2. Remove Advertisements
    PerformanceBoats.com
    Advertisements
     

  3. #2
    Led
    Led is offline
    Senior Member Led's Avatar
    Join Date
    Jul 2010
    Posts
    1,376

    Default

    what size valves in the heads? It should have made more than that, whats the timing set at? what fuel you running?

  4. #3
    Member 1980condor460's Avatar
    Join Date
    Jan 2008
    Location
    Newcastle
    Posts
    67

    Default

    Dont remember the valve sizes. I will have to call tomorrow and check.

    Last test today was 470hp and 523tq. Stopped making power at 5100 rpm. Dyno guy says that it is probably the heads.

    I also remembered that it has D3 heads NOT D0VE heads on it because I wanted to keep the compression down with the flat top pistons.

    I have a set of edelbrock aluminum heads I am going to take to him next week. What size valves SHOULD I be running with the set up. It sounds to me like I am running out of air.

    Thanks

  5. #4
    Platinum Member BigSteve's Avatar
    Join Date
    Feb 2008
    Location
    Close to the water...
    Posts
    1,886

    Default

    Pop off a valve cover and recheck the cam card specs!!!
    Last edited by BigSteve; 12-21-2011 at 05:55 PM.
    If you ain't the lead dog the view is always the same !

  6. #5
    Senior Member
    Join Date
    Apr 2010
    Location
    Rocklin, Calif.
    Posts
    893

    Default

    Who's doing the dyno..I had the same problem with not enough air

  7. #6
    Senior Member ol guy's Avatar
    Join Date
    Mar 2008
    Location
    Lake Elsinore Ca
    Posts
    2,967

    Default

    Quote Originally Posted by 1980condor460 View Post
    Dont remember the valve sizes. I will have to call tomorrow and check.

    Last test today was 470hp and 523tq. Stopped making power at 5100 rpm. Dyno guy says that it is probably the heads.

    I also remembered that it has D3 heads NOT D0VE heads on it because I wanted to keep the compression down with the flat top pistons.

    I have a set of edelbrock aluminum heads I am going to take to him next week. What size valves SHOULD I be running with the set up. It sounds to me like I am running out of air.

    Thanks
    Air and feul. Sounds like the motor is laying down big time. Did you bother to check the plugs for color??? I would bet that the plugs are snow white. Without A/F readings it would be precision guess work. M

  8. #7
    Senior Member ol guy's Avatar
    Join Date
    Mar 2008
    Location
    Lake Elsinore Ca
    Posts
    2,967

    Default

    Quote Originally Posted by 1980condor460 View Post
    Dont remember the valve sizes. I will have to call tomorrow and check.<br>
    <br>
    Last test today was 470hp and 523tq. Stopped making power at 5100 rpm. Dyno guy says that it is probably the heads. <br>
    <br>
    I also remembered that it has D3 heads NOT D0VE heads on it because I wanted to keep the compression down with the flat top pistons. <br>
    <br>
    I have a set of edelbrock aluminum heads I am going to take to him next week. What size valves SHOULD I be running with the set up. It sounds to me like I am running out of air. <br>
    <br>
    Thanks
    Air and feul. Sounds like the motor is laying down big time. Did you bother to check the plugs for color??? I would bet that the plugs are snow white. Without A/F readings it would be precision guess work. M

  9. #8
    Member 1980condor460's Avatar
    Join Date
    Jan 2008
    Location
    Newcastle
    Posts
    67

    Default

    Brad Smith (Smith Power) up in Joplin, MO. He admitted that he usually deals with Chevy's. I didn't get the air fuel ratio from him. Last time I spoke with him - he suggested that we take a hard look at the heads. So - what size valves should I be running? Will the D3 heads work with this application or am I pissing in the wind? Who does good head work on Ford stuff? Brad said that he has a "guy" but I wouldn't mind hearing who folks from this forum recommend.
    Thanks

  10. #9
    Senior Member rpm0414's Avatar
    Join Date
    Oct 2011
    Posts
    459

    Default

    Call high flow dynamics. Ask for Paul. He is pretty savvy on ford heads. Google their website.

  11. #10
    gn7
    gn7 is offline
    Senior Member gn7's Avatar
    Join Date
    Jan 2008
    Posts
    25,775

    Default

    If the engine is running lean, fire the dyno guy. If the engine is running out air because the room isn't ventilated correctly, take it some where else. If the cam was installed with a common T gear, and wasn't CORRECTLY timed in, fire the builder. If it was you, and you didn't time it in, shame on you. If the cam is timed in straight up using a standard off the shelf T gear, it could easily be 4+* retarded. With that long ass cam with that compression and 4+* retarded, it could very possibly be a pig.
    The Ford head is capable of making more power than that.
    LINK:GN-RACING.COM

    "there are too many pigs for the teats"
    Abraham Lincoln

  12. #11
    Senior Member BrotherWolf's Avatar
    Join Date
    May 2008
    Location
    Salem,Or
    Posts
    970

    Default

    Quote Originally Posted by gn7 View Post
    If the cam is timed in straight up using a standard off the shelf T gear, it could easily be 4+* retarded. With that long ass cam with that compression and 4+* retarded, it could very possibly be a pig.
    The Ford head is capable of making more power than that.

    Ya what he said, I think its about 8 degrees retarded if you do it that way??

    If I remember right those heads should handle up to 700 hp???

    But ya talk with Paul highflowdynamics@earthlink.net

    www.highflowdynamics.com


    check out the 460ford.com site
    Last edited by BrotherWolf; 12-21-2011 at 08:53 PM.
    With Spray there is a way!!!

  13. #12
    Member 1980condor460's Avatar
    Join Date
    Jan 2008
    Location
    Newcastle
    Posts
    67

    Default

    I did not build it. Dyno guy didn't run it lean and I doubt air in the dyno room is an issue either. This engine is tiny compared to some of the blower motors comin out of his shop. My first call tomorrow will be to the engine guy to get the cam timing and valve specs, second call will be to Paul. Will keep you guys posted. Sounds like I may have made a poor cam choice for my combination.

  14. #13
    Senior Member ol guy's Avatar
    Join Date
    Mar 2008
    Location
    Lake Elsinore Ca
    Posts
    2,967

    Default

    Okay lets just put it straight out WHAT DO THE PLUGS LOOK LIKE??????

  15. #14
    Resident Ford Nut Sleeper CP's Avatar
    Join Date
    Dec 2007
    Location
    San Diego County
    Posts
    9,923

    Default

    Okay lets out it straight out: What were the A/F readings?

    And what is your calculated compression?

    Carbs are messed up, timing is off, cam installed retarded start there.


    S CP
    Last edited by Sleeper CP; 12-21-2011 at 09:35 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"

+ Reply to Thread
Page 1 of 11 1234 ... 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.
If you do not want to register, fill this field only and the name will be used as user name for your post.

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

Please enter a valid email address for yourself.

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.


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