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gm goodwrench motor missing timing tab, is it made into the cover?

Discussion in 'Engine & Performance' started by Mike Curtis, Jul 31, 2020 at 12:50 PM.

  1. Mike Curtis

    Mike Curtis Junior Member

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    Location:
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    First Name:
    Mike
    Truck Year:
    1979
    Truck Model:
    4wd LWB Silverado k10
    Engine Size:
    350
    I got this gm goodwrench motor and looks like I need to check the timing chain, but I noticed it doesn't have a timing tab. I friend told me these motors have the mark made into the timing cover. I took a picture, is this raised area on the cover suppose to be used to set timing? If not, can I just buy a stock tab and bolt it on? thanks,
    [​IMG]
     
  2. legopnuematic

    legopnuematic Supporting Member Supporting Member

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    Spencer
    Truck Year:
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    Sierra 10, C10 Cheyenne, C10 Big Ten, Silverado 10
    Engine Size:
    350 c.i., 350 c.i.
    Verify TDC on #1 to find out what balancer you have, as there are a couple variations of timing pointer locations, then go from there.
     
  3. 75gmck25

    75gmck25 Full Access Member

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    Bruce
    Truck Year:
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    K25 Camper Special TH350 NP203
    Engine Size:
    5.7
    When I bought a new Goodwrench motor it came with two bolt-on timing tabs (for large and small diameter balancer) and they attach at about the 2 o’clock position using two of the timing cover bolts. I assume the OEM tab may have been tack welded to the cover.

    Summit racing sells bolt-on tabs that look like they should work.

    Bruce
     
    idahovette likes this.

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