head bolt size

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Jul 18, 2009 | 07:20 PM
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What size are they, 7/16" x20 ?
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Jul 18, 2009 | 08:01 PM
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Re: head bolt size
No. 7/16-20 is fine thread. For a tap to clean out the threads in the block, you need 7/16-14 which is course thread.

To replace the bolt, a proper head bolt needs to be used.
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Jul 18, 2009 | 09:35 PM
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Re: head bolt size
Alright thanks i just needed to know so I can buy a chaser.
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Tags 1986, 20, 440, bbc, bolt, bolts, camaro, car, engine, gen, head, header, order, size, sizes
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