Page 1 of 2 12 LastLast
Results 1 to 10 of 13

Thread: cam for 632 big duke

  1. #1
    Senior Member MASTER BUILDER
    Join Date
    Jan 2006
    Posts
    237

    cam for 632 big duke

    Just got my cam specs, 288in 294ex @.50 833in 845ex with a 114 lobe separation with big duke 18deg heads and 13.5-1 compression and two dominators will this cam make good power. Thanks

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

    Re: cam for 632 big duke

    Quote Originally Posted by michael1
    Just got my cam specs, 288in 294ex @.50 833in 845ex with a 114 lobe seperation with big duke 18deg heads and 13.5-1 compression and two dominators will this cam make good power. Thanks
    gas or alky ?

    If alky here is a good article to read
    http://www.apdracing.com/news.cfm?ID=60
    David Lanning
    IHRA NHRA 387B

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

  3. #3
    Senior Member MASTER BUILDER
    Join Date
    Jan 2006
    Posts
    237
    gas

  4. #4
    Member JUNIOR BUILDER
    Join Date
    Jun 2004
    Location
    lake luzerne n.y.
    Posts
    87

    Re: cam for 632 big duke

    Quote Originally Posted by hammertime
    Quote Originally Posted by michael1
    Just got my cam specs, 288in 294ex @.50 833in 845ex with a 114 lobe seperation with big duke 18deg heads and 13.5-1 compression and two dominators will this cam make good power. Thanks
    gas or alky ?

    If alky here is a good article to read
    http://www.apdracing.com/news.cfm?ID=60
    That was an interesting read!!!! Thanks for putting up the link to the site.
    I had just ordered a new cam from LSM and actually started wondering why the new cam I had ordered was very very similar to the cam I had except for more lobe sep. and more exhaust duration. Now I know.

  5. #5
    Senior Member MASTER BUILDER
    Join Date
    Jan 2006
    Posts
    237
    Thanks hammertime, I'm calling the cam company tomorrow and sending them that link. I have the pb1802. I want to get this thing right the first time if possible. Thanks again

  6. #6
    Senior Member RACING JUNKIE
    Join Date
    May 2003
    Location
    Coldwater, MI
    Posts
    2,998
    not a problem guys,
    John Kyle @ apd is a big reason you see these bigger cubic inch 11/12/14/18 degree motors running on alky. He is a very smart guy that trys a lot of things on the dyno. If you guys are in the cam market he has his own custom grinds he would sell. If not and you'd like some input he is always a helpfull guy.
    David Lanning
    IHRA NHRA 387B

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

  7. #7
    Senior Member SENIOR BUILDER
    Join Date
    Dec 2005
    Posts
    117

    camshaft methanol and gasoline

    thanks Hammertime! good info and good read. wonder if smaller inch big blocks would respond the same way, like 396 and 427 BBC's? :?:

  8. #8
    Senior Member RACING JUNKIE
    Join Date
    Nov 2004
    Location
    St. Louis, Missouri
    Posts
    664
    Well the cam is set up for a blower application due to 114 lobe seperation, but should work good with the compression ratio you are working with. Pending gas or alky carb selection willbe a big issue. You will want to avoid creating static pressure within the motor to maximize hp & Torque. And you don't what to choke the engine with to small of a carb. Looks like you are going to need a lot of air and fuel por that bad boy.

    If you go alky I suggest at a minimum a mechanical fuel injection system with a bird catcher

  9. #9
    Senior Member MASTER BUILDER
    Join Date
    Jan 2006
    Posts
    237
    The cam company read the article and they are changing things up now. I'm glad hammertime posted that link I think it saved us a lot of headache.

  10. #10
    Senior Member RACING JUNKIE
    Join Date
    May 2003
    Location
    Coldwater, MI
    Posts
    2,998
    Quote Originally Posted by michael1
    The cam company read the article and they are changing things up now. I'm glad hammertime posted that link I think it saved us a lot of headache.

    When you get the specs of it let us know, I know what cams APD used when he switched them around in the big duke motors. What I find amazing that APD does is this, a buddy has a 582 conv headed motor they went to a lowere lift cam something like 770/740 and knocked some compression out 13:1 ands till made 1086 on the dyno. A lot of HP was made in the cam choice for that motor. Its all about the motor shop finding the right thing on the dyno then putting it to the test on the track. Anymore to many companies dont want to do this and find the extra little things that make good HP. Just my 2 cents :lol:
    David Lanning
    IHRA NHRA 387B

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


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