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4 bolt main caps

Discussion in 'Tech Discussion' started by Wesley Morphis, Dec 11, 2019.

  1. Wesley Morphis

    Wesley Morphis Junior Member

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    Oklahoma
    First Name:
    Wesley
    Truck Year:
    1986
    Truck Model:
    GMC JIMMY SIERRA Classic
    Engine Size:
    383 Stroker
    I’m trying to build a 383 stroker out of a sbc350, in the process, I cracked a main cap. Does anybody have a set for sale? Thank you!
     
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  2. HotRodPC

    HotRodPC Administrator Staff Member

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    6.2 to Gas???
    I know this guy, so I've told him to post here since he hasn't got the 50 posts for classifieds. He's one of the E6 Navy guys at Tinker AFB here just outside OKC.

    If anyone has a cracked block, block with a hole in it etc, he needs SBC 4 bolt main large journal main caps. He's obviously going to have to have a line bore now. Because it's already drilled for 4 bolt factory mains without extensive fill work, he can't just buy splayed mains or I'd have suggested it.

    So if you have a 4 Main bad block, he probably really only needs the 3 center mains and can keep his same rear and front main caps.
     
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  3. QBuff02

    QBuff02 I like Big Blocks and I cannot lie

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    Quincy
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    Let me call my engine guy today and we'll see what we can do.
     
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  4. MrMarty51

    MrMarty51 Full Access Member

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    many years ago I made that mistake. The block had to be sent off to get line bored after a used cap was found.
     
  5. Snoots

    Snoots Supporting Member Supporting Member

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    Where the hell is @HonkyKongJr? I'll bet he has some.
     
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  6. HotRodPC

    HotRodPC Administrator Staff Member

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    If he doesn't he can get them pretty easy. He's got scrap yard buddy that can rob them off a scrapped block.
     
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  7. MrMarty51

    MrMarty51 Full Access Member

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    That time I needed a main bearing cap I called a shop over here that specializes in flywheels, blocks and heads. Barneys Blocks and heads. If You can not find one I can see if He has a spare laying round.
     
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