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Aluminum head mounting bolts?

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Old 02-24-2015, 08:26 PM
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68RPOL71
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Default Aluminum head mounting bolts?
For Aluminum Heads, I believe the same head bolts are used (68 L89). Are washers used under the head bolt or the bolt tightend to the head only?

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Old 02-24-2015, 10:46 PM
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ddawson
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With Aluminum always use a washer. Otherwise the head bolt will gouge the head.
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Old 02-25-2015, 11:37 AM
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DucatiDon
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Some heads are thicker than the Ironones and require longer bolts....check your thread length.
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Old 02-25-2015, 03:18 PM
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AirborneSilva
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I used studs on mine, just a thought
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Old 02-27-2015, 06:47 PM
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Little Mouse
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Originally Posted by 68RPOL71
For Aluminum Heads, I believe the same head bolts are used (68 L89). Are washers used under the head bolt or the bolt tightend to the head only?

Thanks!
Some BBC aftermarket aluminum heads the ones with raised exhaust ports use some longer bolts or studs.
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Old 03-01-2015, 01:11 PM
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dmaxx3500
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washers and torque-loosen 3 times-then retorque,use ARP sealent/lube on all bolts and washers too,and thread clean[not retap] all bolt holes,then blow out with air
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