Fastener torque

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{{!}}It is suggested by some to retorque cast iron heads/blocks while still warm (not hot). Whether or not this is done when using iron castings (research this beforehand) is up to the builder. But this should NOT be done with aluminum blocks or heads.
 
{{!}}It is suggested by some to retorque cast iron heads/blocks while still warm (not hot). Whether or not this is done when using iron castings (research this beforehand) is up to the builder. But this should NOT be done with aluminum blocks or heads.
 
==SBC and BBC==
 
==SBC and BBC==
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[[File:Chevyv8 fastener torque.jpg]]
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<table style="float: left;" border="1" cellpadding="1" cellspacing="0" >
 +
<tr>
 +
<td></td>
 +
<td></td>
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<td width="125"></td></tr>
 +
<tr>
 +
<td bgcolor="#CCCCFF" valign="MIDDLE" align="center" class="class"><span class="boldclass">'''SMALL BLOCK CHEVY'''</span></td>
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<td></td>
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<td width="125"></td></tr>
 +
<tr>
 +
<td colspan="3">
 +
<hr>
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</td></tr>
 +
<tr>
 +
<td bgcolor="#CCCCFF" class="class"><span class="boldclass">'''Fastener Type'''</span></td>
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<td></td>
 +
<td bgcolor="#CCCCFF" class="class" width="125"><span class="boldclass">'''Torque Spec'''</span></td></tr>
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<tr>
 +
<td colspan="3">
 +
<hr>
 +
</td></tr>
 +
<tr>
 +
<td class="class">7/16 in. outer main cap bolt</td>
 +
<td></td>
 +
<td class="class" width="125">65 ft.-lbs.</td></tr>
 +
<tr>
 +
<td class="class">7/16 in. inner main cap bolt</td>
 +
<td></td>
 +
<td class="class" width="125">70 ft.-lbs.</td></tr>
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<tr>
 +
<td class="class">3/8 in. outer main cap bolt</td>
 +
<td></td>
 +
<td class="class" width="125">40 ft.-lbs.</td></tr>
 +
<tr>
 +
<td class="class">11/32 in. connecting rod bolt</td>
 +
<td></td>
 +
<td class="class" width="125">38-44 ft.-lbs.</td></tr>
 +
<tr>
 +
<td class="class">3/8 in. connecting rod bolt</td>
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<td></td>
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<td class="class" width="125">40-45 ft.-lbs.</td></tr>
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<tr>
 +
<td class="class">Cylinder head bolts</td>
 +
<td></td>
 +
<td class="class" width="125">65 ft.-lbs.</td></tr>
 +
<tr>
 +
<td class="class">Screw-in rocker arm studs</td>
 +
<td></td>
 +
<td class="class" width="125">50 ft.-lbs.</td></tr>
 +
<tr>
 +
<td class="class">Intake manifold bolts (iron heads)</td>
 +
<td></td>
 +
<td class="class" width="125">30 ft.-lbs.</td></tr>
 +
<tr>
 +
<td class="class">Oil pump bolt</td>
 +
<td></td>
 +
<td class="class" width="125">60-70 ft.-lbs.</td></tr>
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<tr>
 +
<td class="class">Cam sprocket bolts</td>
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<td></td>
 +
<td class="class" width="125">18-20 ft.-lbs.</td></tr>
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<tr>
 +
<td class="class">Harmonic damper bolt</td>
 +
<td></td>
 +
<td class="class" width="125">60 ft.-lbs.</td></tr>
 +
<tr>
 +
<td class="class">Flywheel/flexplate bolts</td>
 +
<td></td>
 +
<td class="class" width="125">65 ft.-lbs.</td></tr>
 +
<tr>
 +
<td class="class">Pressure plate bolts</td>
 +
<td></td>
 +
<td class="class" width="125">35 ft.-lbs.</td></tr>
 +
<tr>
 +
<td class="class">Bellhousing bolts</td>
 +
<td></td>
 +
<td class="class" width="125">25 ft.-lbs.</td></tr>
 +
<tr>
 +
<td class="class">Exhaust manifold bolts</td>
 +
<td></td>
 +
<td class="class" width="125">25 ft.-lbs.</td></tr>
 +
<tr>
 +
<td></td>
 +
<td></td>
 +
<td width="125"></td></tr></table>
 +
 
 +
<table style="float: right;" border="1" cellpadding="1" cellspacing="0">
 +
<tr>
 +
<td></td>
 +
<td></td>
 +
<td width="125"></td></tr>
 +
<tr>
 +
<td bgcolor="#CCCCFF" valign="MIDDLE" align="center" class="class"><span class="boldclass">'''BIG BLOCK CHEVY'''</span></td>
 +
<td></td>
 +
<td width="125"></td>
 +
</tr>
 +
<tr>
 +
<td colspan="3"><hr></td>
 +
</tr>
 +
<tr>
 +
<td bgcolor="#CCCCFF" class="class"><span class="boldclass">'''Fastener Type'''</span></td>
 +
<td></td>
 +
<td bgcolor="#CCCCFF" class="class" width="125"><span class="boldclass">'''Torque Spec'''</span></td>
 +
</tr>
 +
<tr>
 +
<td colspan="3"><hr></td>
 +
</tr>
 +
<tr>
 +
<td class="class">Main cap bolt, 396-427 2-bolt</td>
 +
<td></td>
 +
<td class="class" width="125">95 ft.-lbs.</td>
 +
</tr>
 +
<tr>
 +
<td class="class">Main cap bolt, 396-454 4-bolt</td>
 +
<td></td>
 +
<td class="class" width="125">110 ft.-lbs.</td>
 +
</tr>
 +
<tr>
 +
<td class="class">3/8 in. connecting rod bolt</td>
 +
<td></td>
 +
<td class="class" width="125">50 ft.-lbs.</td>
 +
</tr>
 +
<tr>
 +
<td class="class">7/16 in. connecting rod bolt</td>
 +
<td></td>
 +
<td class="class" width="125">67-73 ft.-lbs.</td>
 +
</tr>
 +
<tr>
 +
<td class="class">Cylinder head bolts, long</td>
 +
<td></td>
 +
<td class="class" width="125">75 ft.-lbs.</td>
 +
</tr>
 +
<tr>
 +
<td class="class">Cylinder head bolts, short</td>
 +
<td></td>
 +
<td class="class" width="125">65-68 ft.-lbs.</td>
 +
</tr>
 +
<tr>
 +
<td class="class">Screw-in rocker arm studs</td>
 +
<td></td>
 +
<td class="class" width="125">50 ft.-lbs.</td>
 +
</tr>
 +
<tr>
 +
<td class="class">Intake manifold bolts (iron heads)</td>
 +
<td></td>
 +
<td class="class" width="125">25 ft.-lbs.</td>
 +
</tr>
 +
<tr>
 +
<td class="class">Oil pump bolt</td>
 +
<td></td>
 +
<td class="class" width="125">65 ft.-lbs.</td>
 +
</tr>
 +
<tr>
 +
<td class="class">Cam sprocket bolts</td>
 +
<td></td>
 +
<td class="class" width="125">20 ft.-lbs.</td>
 +
</tr>
 +
<tr>
 +
<td class="class">Harmonic damper bolt</td>
 +
<td></td>
 +
<td class="class" width="125">85 ft.-lbs.</td>
 +
</tr>
 +
<tr>
 +
<td class="class">Flywheel/flexplate bolts</td>
 +
<td></td>
 +
<td class="class" width="125">60 ft.-lbs.</td>
 +
</tr>
 +
<tr>
 +
<td class="class">Pressure plate bolts</td>
 +
<td></td>
 +
<td class="class" width="125">35 ft.-lbs.</td>
 +
</tr>
 +
<tr>
 +
<td class="class">Bellhousing bolts</td>
 +
<td></td>
 +
<td class="class" width="125">25 ft.-lbs.</td>
 +
</tr>
 +
<tr>
 +
<td class="class">Exhaust manifold bolts</td>
 +
<td></td>
 +
<td class="class" width="125">20 ft.-lbs.</td>
 +
</tr>
 +
<tr>
 +
<td></td>
 +
<td></td>
 +
<td width="125"></td>
 +
</tr>
 +
</table>
 +
 
 +
<br><br><br style="clear:both"/>
  
 
==Inline six==
 
==Inline six==

Revision as of 18:19, 23 January 2013

Retrieved from "https://www.crankshaftcoalition.com/wiki/index.php?title=Fastener_torque&oldid=27004"
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