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Exhaust manifold bolt -special tool/socket?

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Old Jun 27, 2012 | 09:24 PM
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Default Exhaust manifold bolt -special tool/socket?

Is there a special tool for installation and removal of the driver's side center rear exhaust manifold bolt on a stock 74 350? So far as I can tell, there is not enough clearance between the manifold and the bolt head to get a socket on it or even an open end wrench. GM must have had a way to get something on there to tighten it and torque it to spec. (I ended up cutting the head off the old bolt with a dremel tool to get the manifold off.)

Any suggestions will be greatly appreciated.
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Old Jun 27, 2012 | 09:37 PM
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thin wall socket
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Old Jun 28, 2012 | 08:12 AM
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While really not familiar with your particular application, I've installed my share of long tube headers in tight areas. Places like Summit Racing carry stainless shouldered 7/16" drive header bolts, for this. While maybe not helping in your removal, maybe easier to bolt back on.
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Old Jun 28, 2012 | 11:35 AM
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when you put it back in you can either use a stud and then a nut or another bolt, but install a thicker washer. it will space the nut or bolt head far enough out to make future removal easier.. hope this helps
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Old Jun 28, 2012 | 01:14 PM
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Originally Posted by Paul ADK
...GM must have had a way to get something on there to tighten it and torque it to spec...
At St. Louis, the manifolds were installed on the engine dress line before the engine was lowered in the chassis. They were not hindered by the nuisance of a car body being in the way.

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