Won't start when up to temp

Discussion in 'Street/strip 400/430/455' started by RellyRell3605, Mar 31, 2024.

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  1. RellyRell3605

    RellyRell3605 Member

    Hello guys I have a 455 bored 30 over 11-1 compression 308s cam timing set at 33°
    Car won't start when it's up to temp
    Any suggestions
     
    RellyRell3605, Mar 31, 2024
    #1
  2. got_tork

    got_tork Well-Known Member

    Are the battery and starter in good condition?
    Chris
     
    got_tork, Mar 31, 2024
    #2
    RellyRell3605 likes this.
  3. adurn

    adurn Well-Known Member

    Original style starter? Those can get heat soaked pretty easily, especially with a big block and headers.
     
    adurn, Mar 31, 2024
    #3
    Mike Nussell and Max Damage like this.
  4. Max Damage

    Max Damage I'm working on it!

    More info would be good. What does it do? Does it crank, but no fire? Does it not do anything? Does it click but not crank?

    Too many possibilities.
     
    Max Damage, Mar 31, 2024
    #4
    Smartin likes this.
  5. Smartin

    Smartin antiqueautomotiveservice.com Staff Member

    Yeah need more input. Does it crank but not fire? Starter not turn?
     
    Smartin, Mar 31, 2024
    #5
    Ken Warner likes this.
  6. RellyRell3605

    RellyRell3605 Member

    Yes
     
    RellyRell3605, Mar 31, 2024
    #6
  7. RellyRell3605

    RellyRell3605 Member

    Power master starter
     
    RellyRell3605, Mar 31, 2024
    #7
  8. Dr. Roger

    Dr. Roger Stock enthusiast

    Could be advanced too far... They will turn over really slow when they get hot.
     
    Dr. Roger, Mar 31, 2024
    #8
  9. RellyRell3605

    RellyRell3605 Member

    Cranks
    Got fire
    And getting gas
    No start until after it cools off
    Car runs fine while it's on
    Temp 180 200
     
    RellyRell3605, Mar 31, 2024
    #9
  10. Dr. Roger

    Dr. Roger Stock enthusiast

    Could be a coil problem.
     
    Dr. Roger, Mar 31, 2024
    #10
    knucklebusted and BUICKRAT like this.
  11. RellyRell3605

    RellyRell3605 Member

    Timing set at 33 degrees and no vacuum advance
     
    RellyRell3605, Mar 31, 2024
    #11
  12. RellyRell3605

    RellyRell3605 Member

    Coil is firing at hi temp
     
    RellyRell3605, Mar 31, 2024
    #12
  13. Stevem

    Stevem Well-Known Member

    So let me get this straight, you say it cranks normal when fully up to temp and has spark & fuel but will not start?

    PS,
    Buy the way, it would run cooler with vacuum advance.
     
    Stevem, Mar 31, 2024
    #13
    Schurkey, BadBrad and Dadrider like this.
  14. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD" Staff Member

    So you are running constant timing? If it cranks at 33*, you probably have a crank retard? Could still be a coil that is breaking down when hot. It may still produce a spark, but maybe too weak.
     
    LARRY70GS, Mar 31, 2024
    #14
    Schurkey likes this.
  15. hugger

    hugger Well-Known Member

    Battery location?
    Cable size?
    Ground locations?
     
    hugger, Apr 1, 2024
    #15
  16. RellyRell3605

    RellyRell3605 Member

    Yes all the above and no start until the engine cools down
    When vacuum advance is on it backs fire though the carburetor
     
    RellyRell3605, Apr 8, 2024
    #16
  17. RellyRell3605

    RellyRell3605 Member

    I will try advancing the timing
    What do u that is a good degree of timing
    Also I'm running a stock distributor and coil
     
    RellyRell3605, Apr 8, 2024
    #17
  18. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD" Staff Member

    You misunderstood what I asked.
     
    LARRY70GS, Apr 8, 2024
    #18
  19. RellyRell3605

    RellyRell3605 Member

    Battery
    Battery under the hood
    Battery grounded to the engine and engine grounded to frame
    Not sure of the cable size but normal size for battery cable
     
    RellyRell3605, Apr 8, 2024
    #19
  20. john.schaefer77

    john.schaefer77 Well-Known Member

    Are you running 33° of timing locked?
     
    john.schaefer77, Apr 8, 2024
    #20
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