Results 1 to 7 of 7

Thread: steam holes sbc 400 heads/

  1. #1
    Senior Member DYNO OPERATOR
    Join Date
    Apr 2008
    Posts
    496

    steam holes sbc 400 heads/

    Do i really need to have them?im only going to race the car.I would hate to drill into my new afr heads.

  2. #2
    Member JUNIOR BUILDER
    Join Date
    Feb 2008
    Location
    Childers Australia
    Posts
    99
    According to what I have read no.The proviso was,as long as the engine sees little to no low speed operation.

  3. #3
    Senior Member RACING JUNKIE
    Join Date
    Jan 2006
    Location
    La.
    Posts
    2,890
    Nope not on a drag car, no one i know ever drills the steam holes in their heads, in fact use a gasket that does not include the steam holes.

    JMO


    Zip.

  4. #4
    Senior Member DYNO OPERATOR
    Join Date
    Apr 2008
    Posts
    496
    AFTER READING DART AND AFR'S WEB SITE THEY RECCOMEND DRILLING STEAM HOLES,I GUESS IT'S ALL UP TO EACH INDIVIDUAL ENGINE BUILDER.

  5. #5
    Senior Member RACING JUNKIE jmarksdragster's Avatar
    Join Date
    Jul 2007
    Location
    Florida
    Posts
    635
    Between my brother, Dad, an myself we have run a LOT of 400's starting about 1979, never drilled any, even on street engines. Don't waste your time.

    Mark Whitener
    http://racingfuelsystems.myfunforum.org
    __________

    Good work isn't cheap, and cheap work can't be good.

  6. #6
    Senior Member EXPERT BUILDER
    Join Date
    Aug 2005
    Location
    Tell City, IN
    Posts
    356
    No need to drill them. I have ran 400 blocks for about 4 years now everyweekend at the track and no issue's.

  7. #7
    Senior Member DYNO OPERATOR
    Join Date
    Aug 2005
    Location
    Rifle Colorado
    Posts
    585
    Agreed, no need for holes....


Posting Permissions

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