Timing mark on early and late Chevy harmonic balancers
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  1. #1
    Slowly but surely Barneys66's Avatar
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    Timing mark on early and late Chevy harmonic balancers

    Anyone know how many degrees difference as I have an early balancer on a late 350 and want to set exactly, not just by ear

    Cheers

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    Full Bloody Rebel! Mad Mark's Avatar
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    I had this problem. The balancer had timing marks at 12 o'clock (impossible to see under the water pump), yet the engine had timing marks at 2 o'clock (ish) which seems to be standard. I ended up buying both timing markers and go from there. I think I still have both, your's for pastage.............
    If I wasn't meant to go that fast, the pedal would only go half way!

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    Dragging not Bragging vince-305's Avatar
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    Id remove no1 plug and insert something thing rotate the engine till its at TDC (by watching the aforementioned item) and mark the damper yourself
    Bit'z 'N' Piece's
    Ford consul mk2 chevy powered highrider

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    '55 to I think 68 has the timing TDC mark at 12 O'clock 1969 had it at 1 O'clock then from '70 it's been at 2 O'clock in line with the woodruff key. A ball park TDC mark is the woodruff key at 2 O'clock although without using the finger over the spark plug or looking at the #1 intake rocker you could be 180* out.

    What some people fail to realise is that they have the wrong pointer for the balancer they are using so finding TDC or using a timing light a nitemare. Check TDC & make sure you have the right pointer.
    1955-56-57 Chevy new and used parts always available from www.randrhotrodimports.co.uk who I'm proud to have sponsor my '57 Chevy race car. 9.3 @ 155.8 mph / 0-60 = 1.47 seconds! Street legal :-)

  7. #5
    Slowly but surely Barneys66's Avatar
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    Thanks for all the replies guys - the truck runs well (timing mark at approx 12 o'clock) and I did think about roughing out a new mark by finding TDC as above, but I wanted to be as accurate as possible

    Mad Mark - thanks especially for the generous offer - just let me know how I can pay !

  8. #6
    Full Bloody Rebel! Mad Mark's Avatar
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    I'll be in Cambridge on Wednesday next week (29th) for work. You can have which ever suits! Can you be in the town?
    Call me on 07889 457073
    If I wasn't meant to go that fast, the pedal would only go half way!

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    Exceeded sell by date Plumpcars's Avatar
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    The only way you'll be accurate is to use a piston stop. Screw it into the plug hole and gently rotate the engine forwards until it touches. Make a pen mark on the damper. Now rotate engine backwards all the way until it touches again. Mark damper at second spot. There will be a short didtance between the two marks...TDC is bang in the middle of the two. As so many small blocks have been messed with over the years it's quite common to have a mismatch and thus problems when trying to use a strobe.

  10. #8
    Full Bloody Rebel! Mad Mark's Avatar
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    That's good advice Steve!

    Barney, I can only find the 12 noon version, but I think that's what you need. Call me to discuss!
    If I wasn't meant to go that fast, the pedal would only go half way!

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