Vintage Oldsmobiles Curved Dash, Limited Touring, Models 40, 53, 66; Series 60, 70, 90

1955 Olds special bolt

Old March 27th, 2015, 06:52 AM
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1955 Olds special bolt

Is there a special bolt that holds down the intake manifold and spark plug wire harness and if so where can I get one?
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Old March 27th, 2015, 07:20 AM
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Should just be a 3/8-16 bolt.
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Old March 31st, 2015, 02:26 PM
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Took pictures of the condition mentioned.
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Old March 31st, 2015, 07:26 PM
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is it supposed to be a bolt w a stud on top (IDK what theyre called) but the a bodies have a bolt like that on the heads like this pic (but not exactly like that)

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Old March 31st, 2015, 07:54 PM
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You can use some 3/8" all thread and use two nuts. If you lived close you could come by and I would cut some off and give you. You can get it at Home Depot.
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Old March 31st, 2015, 08:45 PM
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The IDK bolt looks good but would like to have the 3/8 on the bottom and the 5/16 on top. Sure would like to find the stock bolt but top end of engine was torn down when I got the car. If no luck finding it might have to weld 5/16 piece of all thread on 3/8 bolt
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Old April 1st, 2015, 02:15 PM
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You could drill and tap the 3/8 bolt head for 5/16 thread and make a 5/16 stud to thread in and lock it in with red lock tight. I would not drill very far into the head of the bolt to make sure you don't degrade the bolt strength.

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Old April 1st, 2015, 04:56 PM
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Thanks Mark57, that is also a good option to the problem.
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