Page 1 of 4 123 ... LastLast
Results 1 to 10 of 31

Thread: Bbc hp est

  1. #1
    Senior Member SENIOR BUILDER
    Join Date
    Nov 2007
    Location
    indiana
    Posts
    123

    Bbc hp est

    454 .040 over kb hyp pistons 11:1 Chevy 781 heads 2.19 in 1.72 ex bowls blended 629 lift solid flat tappet cam eagle forged crank stock rods all balanced Holley single plane intake and a demon 850
    if something goes wrong there is always the cooler!!!

  2. #2
    Senior Member RACING JUNKIE
    Join Date
    Nov 2008
    Location
    Niagara Falls, NY
    Posts
    965
    im gonna say 550-600ish
    GOOD PARTS AREN'T CHEAP AND CHEAP PARTS ARE NEVER GOOD.........
    http://img.photobucket.com/albums/v2...lastscan-3.jpg

  3. #3
    Senior Member SENIOR BUILDER
    Join Date
    Dec 2005
    Posts
    117

    Re: Bbc hp est

    Quote Originally Posted by ejm
    454 .040 over kb hyp pistons 11:1 Chevy 781 heads 2.19 in 1.72 ex bowls blended 629 lift solid flat tappet cam eagle forged crank stock rods all balanced Holley single plane intake and a demon 850
    -what's rest of the cam specs? duration, lobe sep?

  4. #4
    Senior Member SENIOR BUILDER
    Join Date
    Nov 2007
    Location
    indiana
    Posts
    123
    duration 306 @.050 260 lobe sep 110*
    if something goes wrong there is always the cooler!!!

  5. #5
    Senior Member DYNO OPERATOR bixblk's Avatar
    Join Date
    Dec 2004
    Location
    Chicagoland area
    Posts
    472

    bbc hp estimate

    I had a similar (but a stroker) set up, slightly less cam (both lift and duration), 489 inches
    (4.25 stroke .030)with a 1050 dominator made 578 hp with a very nice flat torgue curve. It was a roller cam and rect port GM heads, and 10.4 to 1 compression.
    good luck !
    My guess is 540 ish

  6. #6
    Senior Member RACING JUNKIE
    Join Date
    Jan 2012
    Posts
    628
    It don't matter! You really don't care . .

    "Horsepower" is one of two things. A measurement determined by testing the actual output with a Dynometer, or a term used at the Bar when trying to impress people who don't know any better . .

    If you're a racer (or engine Builder) and build an engine for a specific purpose (Like Quarter Mile Drag racing, for lack of a better one) then ET is (or should be) your primary concern.

    Doesn't matter whether you're racing heads up or Brackets, it's ET or the potential to get to that ET that you're concerned with . .

    And, based upon both experience of yourself, or those who are relatively successful at the type of racing you're doing, ascertaining the build and it's potential results should be, literally, empirical . . .

    The "Fine Tuning" for good results and engine longevity belong to the user . . . and still have little to do with the spoken word "Horsepower" . . .

    Jus' sayin'

  7. #7
    Senior Member SENIOR BUILDER
    Join Date
    Dec 2005
    Posts
    117
    Quote Originally Posted by roadkill2
    It don't matter! You really don't care . .

    "Horsepower" is one of two things. A measurement determined by testing the actual output with a Dynometer, or a term used at the Bar when trying to impress people who don't know any better . .

    If you're a racer (or engine Builder) and build an engine for a specific purpose (Like Quarter Mile Drag racing, for lack of a better one) then ET is (or should be) your primary concern.

    Doesn't matter whether you're racing heads up or Brackets, it's ET or the potential to get to that ET that you're concerned with . .

    And, based upon both experience of yourself, or those who are relatively successful at the type of racing you're doing, ascertaining the build and it's potential results should be, literally, empirical . . .

    The "Fine Tuning" for good results and engine longevity belong to the user . . . and still have little to do with the spoken word "Horsepower" . . .

    Jus' sayin'
    x2! very true. build an efficient, reliable engine for your application and let the HP number fall where it falls

  8. #8
    Senior Member RACING JUNKIE
    Join Date
    Nov 2008
    Location
    Niagara Falls, NY
    Posts
    965
    Quote Originally Posted by maxpower671
    Quote Originally Posted by roadkill2
    It don't matter! You really don't care . .

    "Horsepower" is one of two things. A measurement determined by testing the actual output with a Dynometer, or a term used at the Bar when trying to impress people who don't know any better . .

    If you're a racer (or engine Builder) and build an engine for a specific purpose (Like Quarter Mile Drag racing, for lack of a better one) then ET is (or should be) your primary concern.

    Doesn't matter whether you're racing heads up or Brackets, it's ET or the potential to get to that ET that you're concerned with . .

    And, based upon both experience of yourself, or those who are relatively successful at the type of racing you're doing, ascertaining the build and it's potential results should be, literally, empirical . . .

    The "Fine Tuning" for good results and engine longevity belong to the user . . . and still have little to do with the spoken word "Horsepower" . . .

    Jus' sayin'
    x2! very true. build an efficient, reliable engine for your application and let the HP number fall where it falls
    i think differently ... no self respecting car nut is gonna be ok with saying... well its 300hp but it runs consistent.... lol I'll take the ponies and tune it to be consistent :wink:
    GOOD PARTS AREN'T CHEAP AND CHEAP PARTS ARE NEVER GOOD.........
    http://img.photobucket.com/albums/v2...lastscan-3.jpg

  9. #9
    Senior Member SENIOR BUILDER
    Join Date
    Nov 2007
    Location
    indiana
    Posts
    123
    Well it's not a drag motor and will never be consistant, its in a pulling truck and every track is different and the sled can be weighted differently as can the gearing it the weight box. So i was just asking to have a clue where i stand withe the other 600-625hp trucks out there. Sorry if this thread bothers some of you.
    if something goes wrong there is always the cooler!!!

  10. #10
    Senior Member RACING JUNKIE BEAST477's Avatar
    Join Date
    Feb 2007
    Location
    Michigan
    Posts
    1,908
    Are you in a class that limits what head or camshaft you can run?
    BEAST477






    Only a rich man can afford to use cheap parts.

    http://www.racingjunk.com/profile/177549


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Email us - Support@RacingJunk.com
Call us - 866.326.9227
Copyright © 2005-2016 RacingJunk.com All Rights Reserved.

Designated trademarks and brands are the property of their respective owners. Use of this Web site constitutes acceptance of the RacingJunk.com
Terms of Use, Classifieds Disclaimer, Privacy Policy, and Cookie Policy