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Canadian Poncho Homepage -> Canadian Poncho -> 65-70 Full Size Power Train Tech Forum -> Broken Flywheel inspection cover bolt on 396 / TH400
Post Info TOPIC: Broken Flywheel inspection cover bolt on 396 / TH400
68 Grande


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Broken Flywheel inspection cover bolt on 396 / TH400
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I have a broken bolt head for my flywheel inspection plate.  The inspection plate sits up nicely and tight except the one corner (top drivers) but so far has not caused any issues however I know its broke and it bugs me.  The bolt is broke off flush with the surface and I have thought about drilling it and get an easy out but that bolt is a tiny little bolt so I just have been procrastinating to do something about it. 

Anyone else happen to experience a broken bolt in this area and willing to share your experience in removing the little irritating bolt?



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4SPEED427


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Way back when I had a trans with that bolt broken. Someone had just drilled the hole bigger and put a bolt and a nut but if you are careful you could likely get it drilled out. If not, you could always rethread it to one size bigger.

If the weather was better it would be a good hoist job at our place tomorrow!

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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles 

1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)
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65wagon


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I use the weld on washer trick with ali, works slick



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seventy2plus2


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I'd get a real accurate center punch (possibly a spring loaded one) and dimple in the middle of the bolt. Get some left hand drill bits, and drill it to possibly get in an easy-out to extract the bolt.

I broke the screw that holds my choke thermostat in my LS6 intake, and got it out with that method, and I think that was a #10 screw. I couldn't turn the easy out, but when I moved up to the next size left hand drill bit, it bit into the screw and spun it out.

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Brian


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If all of the above fail put a heilcoil in back to the original size.
I had to do this with my power glide.


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