Vortec L31 cylinder head
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* p/n 25534446 (assembled) | * p/n 25534446 (assembled) | ||
The specs for the large port head is the same as for the small port head except for the port volumes: 215cc intake ports, and 77cc or 84cc exhaust ports, depending on the source. | The specs for the large port head is the same as for the small port head except for the port volumes: 215cc intake ports, and 77cc or 84cc exhaust ports, depending on the source. | ||
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| + | ====Large port Vortec flow chart==== | ||
| + | <table table border="2" cellpadding="2" cellspacing="0"><tr valign="top" tr bgcolor="#FFF8DC"><td colspan="2"><center>INTAKE</center></td><td colspan="2"><center>EXHAUST</center></td></tr><tr valign="top" tr bgcolor="#FFF8DC"><td>Lift (in.)</td><td> CFM </td><td>Lift (in.)</td><td> CFM </td></tr><tr valign="top"><td>0.200</td><td>128.6</td><td>0.200</td><td>100.8</td></tr><tr valign="top"><td>0.300</td><td>188.4</td><td>0.300</td><td>138.6</td></tr><tr valign="top"><td>0.400</td><td>234.8</td><td>0.400</td><td>154.4</td></tr><tr valign="top"><td>0.500</td><td>257.2</td><td>0.500</td><td>152.5</td></tr><tr valign="top"><td>0.600</td><td>263.2</td><td>0.600</td><td>163.8</td></tr><tr valign="top"><td>0.700</td><td>269.1</td><td>0.700</td><td>167.0</td></tr></table> | ||
'''[[Vortec_L31_cylinder_head#Upgrading and Compatibility|Return to above]]''' | '''[[Vortec_L31_cylinder_head#Upgrading and Compatibility|Return to above]]''' | ||
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