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

 

Thread: vac advance?
          
   
   

Reply To Thread
Results 1 to 5 of 5
  1. #1
    plumpurpleplym is offline CHR Member Visit my Photo Gallery
    Join Date
    Feb 2011
    Location
    sapulpa
    Car Year, Make, Model: 36 Plymouth 5 window coupe
    Posts
    42

    vac advance?

     



    1971-307 should vac. advance have vacume at idle,or only on eccelaration? Edelbrock 2101 performer with 1406 carb.carb has two small vac. ports on front of it,one hase no vac. at idle the other does.not sure the one to use.
    A man has to know his limatations,but my list keeps exspanding.

  2. #2
    Dave Severson is offline CHR Member/Contributor Visit my Photo Gallery
    Join Date
    Jul 2003
    Location
    Madison
    Car Year, Make, Model: '67 Ranchero, '57 Chevy, '82 Camaro,
    Posts
    21,160

    Depends on which one the car likes---Heavy car with the small engine would probably run better with unported vacuum--also depends on how well, how soon, and how much advance the mechanical throws in......
    Yesterday is history, tomorrow is a mystery, Live for Today!
    Carroll Shelby

    Learning must be difficult for those who already know it all!!!!

  3. #3
    glennsexton's Avatar
    glennsexton is offline CHR Member/Contributor Visit my Photo Gallery
    Join Date
    Mar 2005
    Location
    Tigard
    Car Year, Make, Model: 63 Nova SS
    Posts
    2,572

    If you're using the stock distributor, use the full time vacuum - on the right (driver's side)...
    "Where the people fear the government you have tyranny. Where the government fears the people you have liberty." John Basil Barnhil

  4. #4
    Mikej's Avatar
    Mikej is offline CHR Member Visit my Photo Gallery
    Join Date
    Aug 2004
    Location
    Portsmouth
    Car Year, Make, Model: 1935 Chevy Master Sport Coupe
    Posts
    98

    In stock form, they used the progressive port. Must people use the full manifold vac now.
    If it's not broke, fix it anyway.

  5. #5
    HWORRELL's Avatar
    HWORRELL is offline CHR Member Visit my Photo Gallery
    Join Date
    Oct 2003
    Location
    ST.LOUIS
    Car Year, Make, Model: 31 FORD 5 WINDOW,69 442, 305 sprint car,
    Posts
    1,410

    I use manifold vacuum,be sure the mechanical advance is in good working order along with the vacuum advance. I then set my timing to 36 dgrees @ 3200 rpm (in other words full advance)
    If you do it like this the timing will retard on acceleration (or load) and will usually keep it from spark knocking on the fuel we have nowdays. This seems to work well on any older car or hotrod.

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
Links monetized by VigLink