Vortec L31 cylinder head

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==Flow rate of L31 Vortec heads==
 
==Flow rate of L31 Vortec heads==
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{| style="color:black; background-color:#ffffcc;" cellpadding="5" cellspacing="0" border="1"
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{| style="color:black; cellpadding="5" cellspacing="0" border="1" bgcolor="#FFF8DC"
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!Lift (inches) !!Intake (CFM) !!Exhaust (CFM)
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!bgcolor="#CCCCFF"|Lift (in.) !!bgcolor="#CCCCFF"|Intake (CFM) !!bgcolor="#CCCCFF"|Exhaust (CFM)
 
|-
 
|-
−
| align="right" |.1 || align="right" |70 || align="right" |49
+
| align="right" |0.100 || align="right" |70 || align="right" |49
 
|-
 
|-
−
| align="right" |.2 || align="right" |139 || align="right" |105
+
| align="right" |0.200 || align="right" |139 || align="right" |105
 
|-
 
|-
−
| align="right" |.3 || align="right" |190 || align="right" |137
+
| align="right" |0.300 || align="right" |190 || align="right" |137
 
|-
 
|-
−
| align="right" |.4 || align="right" |227 || align="right" |151
+
| align="right" |0.400 || align="right" |227 || align="right" |151
 
|-
 
|-
−
| align="right" |.5 || align="right" |239 || align="right" |160
+
| align="right" |0.500 || align="right" |239 || align="right" |160
 
|-
 
|-
−
| align="right" |.6 || align="right" |229 || align="right" |162
+
| align="right" |0.600 || align="right" |229 || align="right" |162
 
|-
 
|-
 
|}
 
|}
  
 
;'''Sources:'''
 
;'''Sources:'''
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:Paul Shufelt, Chevy High Performance (Feb. 2001)
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:Paul Shufelt, Chevy High Performance (Feb. 2001)<br>
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 +
 
 +
<table border="1" cellpadding="2" cellspacing="0" ><tr align="left" bgcolor="#FFF8DC" valign="top">
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 +
<td class="wbg-blacktext" align="center" valign="top">&nbsp;</td>
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<td class="ltbluebg-blacktextbold-12px" colspan="3" align="center" valign="top">'''Intake Flow Comparison'''</td>
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 +
<td class="ltyellowbg-blacktext-12pxB" colspan="3" align="center" valign="top">'''Exhaust Flow Comparison'''</td></tr>
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<tr align="left" bgcolor="#CCCCFF" valign="top">
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<td class="ltorangebg-blacktext-14pxB" align="center" valign="top" width="92">'''Valve Lift'''</td>
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<td class="oceanbluebg-blacktext" align="center" valign="top" width="92">'''GMPP'''<br>
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'''Fast Burn'''</td>
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<td class="ltpinkPowderbg-bk12" align="center" valign="top" width="92">'''GM'''<br>
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'''Vortec L31'''</td>
 +
<td class="msdbg-blacktext" align="center" nowrap="" valign="top" width="92">'''GM Stock'''<br>'''Iron 882'''</td>
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<td class="oceanbluebg-blacktext" align="center" valign="top" width="92">'''GMPP'''<br>
 +
'''Fast Burn'''</td>
 +
<td class="ltpinkPowderbg-bk12" align="center" valign="top" width="92">'''GM'''<br>
 +
'''Vortec L31'''</td>
 +
<td class="msdbg-blacktext" align="center" valign="top" width="92">'''GM Stock'''<br>
 +
'''Iron 882'''</td></tr>
 +
<tr align="left" bgcolor="#FFF8DC" valign="top">
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<td class="ltorangebg-blacktext-12px" align="center" valign="top">0.050”</td>
 +
<td class="wbg-blacktext" align="center" valign="top">30</td>
 +
<td class="wbg-blacktext" align="center" valign="top">40</td>
 +
<td class="wbg-blacktext" align="center" valign="top">39</td>
 +
<td class="wbg-blacktext" align="center" valign="top">23</td>
 +
<td class="wbg-blacktext" align="center" valign="top">25</td>
 +
<td class="wbg-blacktext" align="center" valign="top">34</td></tr>
 +
<tr align="left" bgcolor="#FFF8DC" valign="top">
 +
<td class="ltorangebg-blacktext-12px" align="center" valign="top">0.100”</td>
 +
<td class="wbg-blacktext" align="center" valign="top">61</td>
 +
<td class="wbg-blacktext" align="center" valign="top">70</td>
 +
<td class="wbg-blacktext" align="center" valign="top">70</td>
 +
<td class="wbg-blacktext" align="center" valign="top">53</td>
 +
<td class="wbg-blacktext" align="center" valign="top">48</td>
 +
<td class="wbg-blacktext" align="center" valign="top">58</td></tr>
 +
<tr align="left" bgcolor="#FFF8DC" valign="top">
 +
<td class="ltorangebg-blacktext-12px" align="center" valign="top">0.200”</td>
 +
<td class="wbg-blacktext" align="center" valign="top">126</td>
 +
<td class="wbg-blacktext" align="center" valign="top">139</td>
 +
<td class="wbg-blacktext" align="center" valign="top">125</td>
 +
<td class="wbg-blacktext" align="center" valign="top">107</td>
 +
<td class="wbg-blacktext" align="center" valign="top">101</td>
 +
<td class="wbg-blacktext" align="center" valign="top">108</td></tr>
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<tr align="left" bgcolor="#FFF8DC" valign="top">
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<td class="ltorangebg-blacktext-12px" align="center" valign="top">0.300”</td>
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<td class="wbg-blacktext" align="center" valign="top">180</td>
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<td class="wbg-blacktext" align="center" valign="top">190</td>
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<td class="wbg-blacktext" align="center" valign="top">175</td>
 +
<td class="wbg-blacktext" align="center" valign="top">140</td>
 +
<td class="wbg-blacktext" align="center" valign="top">121</td>
 +
<td class="wbg-blacktext" align="center" valign="top">135</td></tr>
 +
<tr align="left" bgcolor="#FFF8DC" valign="top">
 +
<td class="ltorangebg-blacktext-12px" align="center" valign="top">0.400”</td>
 +
<td class="wbg-blacktext" align="center" valign="top">221</td>
 +
<td class="wbg-blacktext" align="center" valign="top">227</td>
 +
<td class="wbg-blacktext" align="center" valign="top">204</td>
 +
<td class="wbg-blacktext" align="center" valign="top">167</td>
 +
<td class="wbg-blacktext" align="center" valign="top">140</td>
 +
<td class="wbg-blacktext" align="center" valign="top">141</td></tr>
 +
<tr align="left" bgcolor="#FFF8DC" valign="top">
 +
<td class="ltorangebg-blacktext-12px" align="center" valign="top">0.500”</td>
 +
<td class="wbg-blacktext" align="center" valign="top">243</td>
 +
<td class="wbg-blacktext" align="center" valign="top">239</td>
 +
<td class="wbg-blacktext" align="center" valign="top">205</td>
 +
<td class="wbg-blacktext" align="center" valign="top">178</td>
 +
<td class="wbg-blacktext" align="center" valign="top">147</td>
 +
<td class="wbg-blacktext" align="center" valign="top">142</td></tr>
 +
<tr align="left" bgcolor="#FFF8DC" valign="top">
 +
<td class="ltorangebg-blacktext-12px" align="center" valign="top">0.600”</td>
 +
<td class="wbg-blacktext" align="center" valign="top">238</td>
 +
<td class="wbg-blacktext" align="center" valign="top">229</td>
 +
<td class="wbg-blacktext" align="center" valign="top">206</td>
 +
<td class="wbg-blacktext" align="center" valign="top">184</td>
 +
<td class="wbg-blacktext" align="center" valign="top">151</td>
 +
<td class="wbg-blacktext" align="center" valign="top">142</td></tr>
 +
<tr class="wbg-blacktext" align="left" valign="top">
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<td class="wbg-blacktext" colspan="7" align="left" valign="top"><span class="wbg-blacktext-12pxB">'''Note''':</span> Vortec L31 and Stock Iron 882 flow data where obtained from Car Craft Magazine’s Web site in their Technical Articles section. The Fast Burn (new version) flow data is Chevrolet’s data.</td></tr></table><br>
 +
{{!}} It's unknown at this time why there's a discrepancy between the exhaust flow of the Vortec heads between the two tables.
  
 
==Upgrading and Compatibility==
 
==Upgrading and Compatibility==

Revision as of 21:04, 10 January 2013

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