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Technical 392 build ideas for 600HP for mild drag racing FED 8.60ET

Discussion in 'The Hokey Ass Message Board' started by ChevJerico, Feb 11, 2019.

  1. I don't think it was the heads but your tune up. oh wait its never the tune up its always the parts fault. the orange crate fed ran 95 percent going over 250mph in a nhra legal vintage dragster. the car set the low et at the march meet one year and runnered up. they ran hot heads for many years before switching to ajs. there are so many cars running hh on nitro I cant count. its not the heads.
     
    loudbang likes this.
  2. Well, of course it was the tuneup. But were we gonna back down on the tuneup just so we can make some latest hot setup cast aluminum heads live?
    If your boys had years of success using the cast heads there must have been a very compelling reason to switch to the far more expensive AJs. I wonder if that funny looking exhaust flame at 1000 ft had anything to do with it?

    I rest my case.........
     
  3. ChevJerico
    Joined: Feb 10, 2019
    Posts: 18

    ChevJerico

    Thanks for the info guys!
     
  4. lippy
    Joined: Sep 27, 2006
    Posts: 3,923

    lippy
    Member
    from Ks

    What is this going in? OOPs just saw FED. Lippy
     
  5. The reason for the change was do to the work involved in modifying the hot heads for max power. The ports were enlarged to the point that the pushrod holes broke through. Brass tubes were required. The seats were replaced for larger valves. O-rings needed to be cut. .050 was removed from the spring seats. All this work took alot of time to do on several sets of heads. Aj got ahold of a set of the heads and copied what was done in billet. The new solid heads had all the work done already along with being stronger. The OP isn't running nitro so who cares. The HH are still superior over steel. They also outflow the ajs in the right hands.
     
    loudbang likes this.
  6. ChevJerico
    Joined: Feb 10, 2019
    Posts: 18

    ChevJerico

    What ET are you running Lippy?
     
  7. Oh no....another Sac guy getting smitten....the motors in the 195 nostalgic car were cast iron block and heads when they got back into the nostalgic racing....ran and blew a few having some fun against some tough (Keith Black built) competitors..... Sept-30-1995.jpg un l tune 392.jpg
     
    loudbang likes this.
  8. 402BOSSMAN
    Joined: Jul 26, 2015
    Posts: 297

    402BOSSMAN
    Member

    I can be of assistance. You do not need Hot Heads castings to make the power you are after. Those heads flow 10-15 cfm more than a stock head so you still have to port them once you get them. I have CNC Programs for all OEM Early Hemi Chrysler, Desoto, Dodge Hemi heads, and the Hot Heads Castings. I've been apart of many builds and can direct you to the options you will need to make decisions on. http://www.smithbergracing.com/

    Here is a pretty basic build that Gene Adams built. We did some intake testing with this engine and it made 600hp on 10.2:1 Compression. This retained the stock rockers and pulled to 7000 RPM. Long term we would at least put some straps on the exhaust rockers to help beef them up as they are the weak link. https://hotrodenginetech.com/early-hemi-single-plane-4v-intake-test/

    This one made 750hp in testing (by rules pulls to 6500RPM) and 710hp at the event. If we could pull it up to 8200 RPM this one could have made about 800hp in the same trim. https://hotrodenginetech.com/hardcore-hemi-attacks-the-engine-masters-challenge/

    The Heinz 57 Head article I wrote a few years back. Setup still works very well and I have improved things since then on the valvetrain package. I have many more examples just depends what you are wanting to do. Be happy to answer and questions you may have.
     
    Last edited: Feb 12, 2019
  9. ChevJerico
    Joined: Feb 10, 2019
    Posts: 18

    ChevJerico


    Thanks Nick, appreciate your input.
     
  10. dreracecar
    Joined: Aug 27, 2009
    Posts: 2,691

    dreracecar
    Member
    from so-cal

    Tech pieces are nice, but NEVER show the cost
    If you have to ask "how much" you really didn't want it in the first place
     
    Last edited: Feb 13, 2019
    402BOSSMAN, Just Gary and 73RR like this.
  11. 150J/F
    Joined: Jan 2, 2010
    Posts: 222

    150J/F
    Member

    J/F required iron heads and I had some good ones. Otherwise, I would have chosen aluminum. Not likely to hurt them running alcohol.
     
  12. 402BOSSMAN
    Joined: Jul 26, 2015
    Posts: 297

    402BOSSMAN
    Member

    You hit the nail on the head there! Let's be honest, it's a Hemi! Ain't nothing cheap about a Hemi!
     
  13. 402BOSSMAN
    Joined: Jul 26, 2015
    Posts: 297

    402BOSSMAN
    Member

    Racer X made some very valid points. You have to consider what you are doing. Are you limited by rules? Racing competitivly in a class? Handle head repairs etc. Aluminum is the answer in some cases but an iron head is very capable in the right hands. Consider this flowing through an injector on a 331 head.....
     
    racer-x likes this.
  14. gimpyshotrods
    Joined: May 20, 2009
    Posts: 15,907

    gimpyshotrods
    Member

    You got that right.

    I am building a mildly beefed-up 354, with a 6-71.

    I am doing a bunch of the machine work on it, and my engine guy is doing a labor/parts trade for the rest.

    Even with all of that, this is costing a fortune.
     
  15. dreracecar
    Joined: Aug 27, 2009
    Posts: 2,691

    dreracecar
    Member
    from so-cal

    In the mid-years of N/JF, a racer (Jim Paul) had DART cast a set of heads in iron using the aluminum patterns. they poured 10, but some did not pass inspection and machineing process. After that ordeal-Dart refused to make them again because of all the issues with them
     
  16. 150J/F
    Joined: Jan 2, 2010
    Posts: 222

    150J/F
    Member

    They were Buick heads for small block Chevys. That was the trick of the week in Comp Eliminator. Finally got a couple of pairs to work. Pretty much ruined N/JF.
     
  17. RustyDogg
    Joined: Oct 8, 2014
    Posts: 87

    RustyDogg
    Member

    Hemi and 600 h.p = not low budget. But damn you're gonna have a hell of a ride!
     
  18. Marty Strode
    Joined: Apr 28, 2011
    Posts: 3,900

    Marty Strode
    Member

    Question about the Dragster, using a transmission ? 8.60 ET shouldn't be all that difficult, using a P-Glide.
     
  19. Sky Six
    Joined: Mar 15, 2018
    Posts: 1,035

    Sky Six
    Member
    from Arizona

    The nicer the nice, the higher the price.
     
    Thor1 and 402BOSSMAN like this.
  20. dreracecar
    Joined: Aug 27, 2009
    Posts: 2,691

    dreracecar
    Member
    from so-cal

    Should have included in the rule--- "Any Commercialy available". Ran the Alu versions on my Sprint Car , wasn't impressed
     

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