Page 1 of 2 12 LastLast
Results 1 to 10 of 12

Thread: Cam size for 468

  1. #1
    Junior Member SHOW GUEST
    Join Date
    Jan 2007
    Posts
    9

    Cam size for 468

    Looking for a cam size for a 468 . BBC , 990 gm heads (ported Joe Gentile) , 2950lbs ( with driver) , 4:11 gears , turbo 400 , 4 link rear , 13:1 comp , alcohol with rons toilet . Does anybody have any suggestions or remarks considering set up .

    I am also looking at upgrading to aluminum heads but would like to purchase a set that will flow for a 555 - 598 . Will any performance be lost or gained by putting such a big head on a small motor .

    Thanks ,

    Mark

  2. #2
    Junior Member SHOW GUEST
    Join Date
    Jan 2007
    Posts
    9
    I also forgot it has an 8" converter that stalls at about 5600 and has a victor jr intake .

    Thanks

  3. #3
    Senior Member RACING JUNKIE jmarksdragster's Avatar
    Join Date
    Jul 2007
    Location
    Florida
    Posts
    635
    Call Curtis @ RFD for the heads, as far as a cam, how fast are you trying to go? Mid 270's @ .050 on a 110 LSA roller will put you mid to low 9's. You should get the heads before making a cam decision.
    Mark Whitener
    http://racingfuelsystems.myfunforum.org
    __________

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

  4. #4
    Senior Member RACING JUNKIE
    Join Date
    May 2003
    Location
    Coldwater, MI
    Posts
    2,998

    Re: Cam size for 468

    Quote Originally Posted by slim396
    Looking for a cam size for a 468 . BBC , 990 gm heads (ported Joe Gentile) , 2950lbs ( with driver) , 4:11 gears , turbo 400 , 4 link rear , 13:1 comp , alcohol with rons toilet . Does anybody have any suggestions or remarks considering set up .

    I am also looking at upgrading to aluminum heads but would like to purchase a set that will flow for a 555 - 598 . Will any performance be lost or gained by putting such a big head on a small motor .

    Thanks ,

    Mark
    The big heads always have worked on a smaller motor for me, dart 355's on a 468 @ 2000lbs 680/720 lift cam, gm crank, eagle rods. shifted at 6400-6500 ran 5.00/8.00 all day
    David Lanning
    IHRA NHRA 387B

    Fleenor Racing Transmission
    419-280-1406
    Lanning Electric
    Complete Drag Car Wiring
    APD Race Engines
    www.apdracing.com

  5. #5
    Junior Member SHOW GUEST
    Join Date
    Jan 2007
    Posts
    9
    I would like to get into the high 9 s at 4000' da . Currently I am running 10.25@ 129.5 mph with a not so good tune (egts are 1090 - 1140 ) . My 60' is 1.45 . Does anyone think this is possible with the cast heads .

    Thanks ,

  6. #6
    Senior Member RACING JUNKIE
    Join Date
    Dec 2007
    Location
    ohio
    Posts
    810
    yep, i do. you did not give any info on your current cam, the numbers laid out by hammertime sound,s good to me for that combo, 990s are a fairly good stock head, and being ported is a bonus for sure. you are close now, getting your 60' time better, would help a lot also.

  7. #7
    Junior Member APPRENTICE
    Join Date
    Aug 2007
    Location
    ottawa ontario canada
    Posts
    12
    comp cams 284/294 .725 lift on 110 worked very well for us.5500 converter required.sorry do not remember exh lift.made over 700 on 13:1 468 with a holley tunnel ram and twin 750 80186 doms.shifted 7800.
    this was in 1992. ops:
    there are better profiles out there now (comp RX series)...but this served quite well.

    low maintenance.ran on street every friday (30 MILES EASY)

  8. #8
    Junior Member APPRENTICE
    Join Date
    Aug 2007
    Location
    ottawa ontario canada
    Posts
    12
    OVAL PORT DART 370S..very versatile head.get converter restalled for larger head.(its a patch)its gonna be a pig until you stuff more cubes.. :lol:

  9. #9
    Senior Member MASTER BUILDER
    Join Date
    Apr 2003
    Location
    Brookings South Dakota
    Posts
    244
    What are your head flow numbers, intake and exhaust numbers ?
    Did they RE CC the intake runner after they finished the port job?
    Competition Engines & Hardcore Engine Parts
    www.cnc-motorsports.com
    info@cnc-motorsports.com

  10. #10
    Senior Member SENIOR BUILDER
    Join Date
    May 2006
    Location
    Pikeville KY
    Posts
    109
    I have a 468 in a 3600 lbs 66 Chevelle. I picked a 268-272 .697-.731 earson camshaft. Car leaves really well"1.36 60 ft on the back tires and runs 6.16-6.18 all day. I have a set of out of the box Edelbrock rpm performer square port heads, 13.3 comp, 400 turbo 5800 converter.....
    OSCA PROSTREET CHAMPION 2006
    4.87@143.50 1.13 ALL AT 3200LBS

    2009 PRO STREET CHAMPION LONDON DRAGWAY 4.69 @153.00 3200LBS

    2011 LONDON DRAGWAY RECORD HOLDER IN PRO STREET 4.66 @153.00


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