Welcome to Club Hot Rod!  The premier site for everything to do with Hot Rod, Customs, Low Riders, Rat Rods, and more. 

  •  » Members from all over the US and the world!
  •  » Help from all over the world for your questions
  •  » Build logs for you and all members
  •  » Blogs
  •  » Image Gallery
  •  » Many thousands of members and hundreds of thousands of posts! 

YES! I want to register an account for free right now!  p.s.: For registered members this ad will NOT show

 
Like Tree1Likes
  • 1 Post By rspears

Thread: What spark plugs
          
   
   

Reply To Thread
Results 1 to 7 of 7
  1. 05-21-2013 06:16 AM #1
    70chevybb
    70chevybb is offline CHR Member
    Visit my Photo Gallery
    Join Date
    Jan 2012
    Location
    chillicothe
    Car Year, Make, Model: 1972 SS Nova
    Posts
    64

    What spark plugs

     



    I am just about ready to fire up my 468. I have 781 heads on it, what spark plugs would be good to use? I am running a mallory unilite dist and Mallory coil.
    Last edited by 70chevybb; 05-21-2013 at 06:23 AM.
    Reply With Quote Reply With Quote
  3. 05-22-2013 06:17 AM #2
    pat mccarthy's Avatar
    pat mccarthy
    pat mccarthy is offline CHR Member/Contributor
    Visit my Photo Gallery
    Join Date
    Apr 2005
    Location
    bay city
    Posts
    10,546

    use what ever plug brand you like i use deso .auto lite . ngk . for heat the stock heat for the 73 454 should come up 5/8 short reach tapper seat . cross over would be like a champ rn8c or a ac 44
    Irish Diplomacy ..the ability to tell someone to go to Hell ,,So that they will look forward to to the trip
    Reply With Quote Reply With Quote
  4. 05-22-2013 08:30 AM #3
    rspears's Avatar
    rspears
    rspears is offline CHR Member/Contributor
    Visit my Photo Gallery
    Join Date
    Sep 2007
    Location
    Gardner, KS
    Car Year, Make, Model: '33 HiBoy Coupe, '32 HiBoy Roadster
    Posts
    11,020

    Quote Originally Posted by pat mccarthy View Post
    use what ever plug brand you like i use deso .auto lite . ngk . for heat the stock heat for the 73 454 should come up 5/8 short reach tapper seat . cross over would be like a champ rn8c or a ac 44
    Pat,
    Can you help me understand what "...for heat the stock heat for the 73 454 should come up 5/8 short reach tapper seat" means? Also "deso"?
    Roger
    Enjoy the little things in life, and you may look back one day and realize that they were really the BIG things.
    Reply With Quote Reply With Quote
  5. 05-22-2013 09:25 AM #4
    34_40's Avatar
    34_40
    34_40 is offline CHR Member
    Visit my Photo Gallery
    Join Date
    Sep 2007
    Location
    New Bedford
    Car Year, Make, Model: 34 Ford 3W Coupe Replica
    Posts
    14,623

    I'm thinking "deso" = "Denso" as in Nippondenso... Heat range to equal what the "books" show for the stock plug in a 1973 BBC 454.
    5/8 thread, short reach with a taper seat.
    Champ could be Champ brand or Champion brand plugs..

    I like an AC brand or Bosch in comparison.. but to each their own! LOL..
    Reply With Quote Reply With Quote
  6. 05-22-2013 10:57 AM #5
    rspears's Avatar
    rspears
    rspears is offline CHR Member/Contributor
    Visit my Photo Gallery
    Join Date
    Sep 2007
    Location
    Gardner, KS
    Car Year, Make, Model: '33 HiBoy Coupe, '32 HiBoy Roadster
    Posts
    11,020

    Quote Originally Posted by 34_40 View Post
    I'm thinking "deso" = "Denso" as in Nippondenso... Heat range to equal what the "books" show for the stock plug in a 1973 BBC 454. 5/8 thread, short reach with a taper seat. Champ could be Champ brand or Champion brand plugs.. I like an AC brand or Bosch in comparison.. but to each their own! LOL..
    The "Denso" makes sense as you explain it. I'm familiar with "heat range" on plugs, but didn't see any reference to 1973 in the question, so the numbers didn't really make sense to me. "Champ" and "AC" were no issue, but "Tapper" thrown in was enough to put me in a tailspin . Thanks, Mike.
    Last edited by rspears; 05-22-2013 at 11:13 AM.
    34_40 likes this.
    Roger
    Enjoy the little things in life, and you may look back one day and realize that they were really the BIG things.
    Reply With Quote Reply With Quote
  7. 05-22-2013 02:32 PM #6
    pat mccarthy's Avatar
    pat mccarthy
    pat mccarthy is offline CHR Member/Contributor
    Visit my Photo Gallery
    Join Date
    Apr 2005
    Location
    bay city
    Posts
    10,546

    781 head would be a short reach plug and would be a tapered seat and would be about a 1973 454 head he should of knew that they do just sell them under denso with on nip on them
    Irish Diplomacy ..the ability to tell someone to go to Hell ,,So that they will look forward to to the trip
    Reply With Quote Reply With Quote
  8. 05-22-2013 02:38 PM #7
    pat mccarthy's Avatar
    pat mccarthy
    pat mccarthy is offline CHR Member/Contributor
    Visit my Photo Gallery
    Join Date
    Apr 2005
    Location
    bay city
    Posts
    10,546

    Quote Originally Posted by rspears View Post
    The "Denso" makes sense as you explain it. I'm familiar with "heat range" on plugs, but didn't see any reference to 1973 in the question, so the numbers didn't really make sense to me. "Champ" and "AC" were no issue, but "Tapper" thrown in was enough to put me in a tailspin . Thanks, Mike.
    well if you had a chevy it may 1973 was about the last year before they took the nuts off the 454 the 781 head s were a short reach taper plug
    and about that time frame so thats a good place to look in the book and should be a rn8c or a rts 44
    Irish Diplomacy ..the ability to tell someone to go to Hell ,,So that they will look forward to to the trip
    Reply With Quote Reply With Quote
Reply To Thread

Posting Permissions

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

Forum Rules

Links monetized by VigLink