Pontiac V8 engine
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<td style="vnd.ms-excel.numberformat: 0.000"><font face="Arial">3.25 </font></td> | <td style="vnd.ms-excel.numberformat: 0.000"><font face="Arial">3.25 </font></td> | ||
<td style="vnd.ms-excel.numberformat: 0.000"><font face="Arial">2.25 </font></td></tr> | <td style="vnd.ms-excel.numberformat: 0.000"><font face="Arial">2.25 </font></td></tr> | ||
| − | </table> | + | </table><br> |
==Heads== | ==Heads== | ||
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Be aware that published figures often differ. The only sure way to know what the combustion chamber volume is, is to actually measure it. This will take everything into account: previous valve jobs, milling done to the decks, manufacturing and casting tolerance creep/stack up, etc. | Be aware that published figures often differ. The only sure way to know what the combustion chamber volume is, is to actually measure it. This will take everything into account: previous valve jobs, milling done to the decks, manufacturing and casting tolerance creep/stack up, etc. | ||
| + | ===Head applications=== | ||
<table border="1" cellspacing="1" cellpadding="1" bgcolor="#FFF8DC"><tr><td colspan="5" align="center"><h4>PONTIAC CYLINDER HEAD APPLICATIONS</h4></td></tr><tr><td><strong>Casting</strong></td><td><strong>Secondary ID</strong></td><td><strong>Valve diameter (in.)</strong></td><td><strong>Chamber volume</strong></td><td><strong>Original application</strong></td></tr><tr><td>4X</td><td>1/1H</td><td>2.11/1.66</td><td>112 cc</td><td>1973-'74 455ci 4-bbl</td></tr><tr><td>4X</td><td>3/3H</td><td>2.11/1.66</td><td>98-99 cc</td><td>1973-'74 400ci 4-bbl manual trans.</td></tr><tr><td>4X</td><td>4/4H</td><td>1.96/1.66</td><td>98-99 cc</td><td>1973-'74 400ci 2-bbl</td></tr><tr><td>4X</td><td>7/7H</td><td>2.11/1.66</td><td>98-99 cc</td><td>1973-'74 400ci 4-bbl auto trans.</td></tr><tr><td>4C</td><td>5/5H</td><td>1.96/1.66</td><td>96 cc</td><td>1973-'74 350ci 2-bbl w/A.I.R.</td></tr><tr><td>4C</td><td>8/8H</td><td>1.96/1.66</td><td>98 cc</td><td>1973-'74 400ci 2-bbl w/A.I.R.</td></tr><tr><td>46</td><td>6/6H*</td><td>1.96/1.66</td><td>96 cc</td><td>1973-'74 350ci</td></tr><tr><td>5C</td><td>4</td><td>2.11/1.66</td><td>92-94 cc</td><td>1975 350ci</td></tr><tr><td>5C</td><td>7</td><td>2.11/1.66</td><td>99-101 cc</td><td>1975 400ci w/A.I.R.</td></tr><tr><td>5C</td><td>8</td><td>2.11/1.66</td><td>99-101 cc</td><td>1975 400ci</td></tr><tr><td>5C</td><td>9</td><td>2.11/1.66</td><td>92-94 cc</td><td>1975 350ci w/A.I.R.</td></tr><tr><td>6X</td><td>4</td><td>2.11/1.66</td><td>92-94 cc</td><td>Mid-1975-'77 350ci; 1977-'79 W72 400ci</td></tr><tr><td>6X</td><td>8</td><td>2.11/1.66</td><td>99-101 cc</td><td>Mid-1975-'78 400ci</td></tr><tr><td>6S</td><td>7</td><td>2.11/1.66</td><td>99-101 cc</td><td>Mid-1975-'76 400ci w/A.I.R.</td></tr><tr><td>6S</td><td>9</td><td>2.11/1.66</td><td>92-94 cc</td><td>Mid-1975-'76 350ci w/A.I.R.</td></tr><tr><td>51</td><td>6</td><td>2.11/1.66</td><td>124.5 cc</td><td>1975 455ci</td></tr><tr><td>6H</td><td>6</td><td>2.11/1.66</td><td>124.5 cc</td><td>Late-1975-'76 455ci</td></tr><tr><td colspan="5">*Some have been reported to have a secondary stamp of "2"</td></tr></table> | <table border="1" cellspacing="1" cellpadding="1" bgcolor="#FFF8DC"><tr><td colspan="5" align="center"><h4>PONTIAC CYLINDER HEAD APPLICATIONS</h4></td></tr><tr><td><strong>Casting</strong></td><td><strong>Secondary ID</strong></td><td><strong>Valve diameter (in.)</strong></td><td><strong>Chamber volume</strong></td><td><strong>Original application</strong></td></tr><tr><td>4X</td><td>1/1H</td><td>2.11/1.66</td><td>112 cc</td><td>1973-'74 455ci 4-bbl</td></tr><tr><td>4X</td><td>3/3H</td><td>2.11/1.66</td><td>98-99 cc</td><td>1973-'74 400ci 4-bbl manual trans.</td></tr><tr><td>4X</td><td>4/4H</td><td>1.96/1.66</td><td>98-99 cc</td><td>1973-'74 400ci 2-bbl</td></tr><tr><td>4X</td><td>7/7H</td><td>2.11/1.66</td><td>98-99 cc</td><td>1973-'74 400ci 4-bbl auto trans.</td></tr><tr><td>4C</td><td>5/5H</td><td>1.96/1.66</td><td>96 cc</td><td>1973-'74 350ci 2-bbl w/A.I.R.</td></tr><tr><td>4C</td><td>8/8H</td><td>1.96/1.66</td><td>98 cc</td><td>1973-'74 400ci 2-bbl w/A.I.R.</td></tr><tr><td>46</td><td>6/6H*</td><td>1.96/1.66</td><td>96 cc</td><td>1973-'74 350ci</td></tr><tr><td>5C</td><td>4</td><td>2.11/1.66</td><td>92-94 cc</td><td>1975 350ci</td></tr><tr><td>5C</td><td>7</td><td>2.11/1.66</td><td>99-101 cc</td><td>1975 400ci w/A.I.R.</td></tr><tr><td>5C</td><td>8</td><td>2.11/1.66</td><td>99-101 cc</td><td>1975 400ci</td></tr><tr><td>5C</td><td>9</td><td>2.11/1.66</td><td>92-94 cc</td><td>1975 350ci w/A.I.R.</td></tr><tr><td>6X</td><td>4</td><td>2.11/1.66</td><td>92-94 cc</td><td>Mid-1975-'77 350ci; 1977-'79 W72 400ci</td></tr><tr><td>6X</td><td>8</td><td>2.11/1.66</td><td>99-101 cc</td><td>Mid-1975-'78 400ci</td></tr><tr><td>6S</td><td>7</td><td>2.11/1.66</td><td>99-101 cc</td><td>Mid-1975-'76 400ci w/A.I.R.</td></tr><tr><td>6S</td><td>9</td><td>2.11/1.66</td><td>92-94 cc</td><td>Mid-1975-'76 350ci w/A.I.R.</td></tr><tr><td>51</td><td>6</td><td>2.11/1.66</td><td>124.5 cc</td><td>1975 455ci</td></tr><tr><td>6H</td><td>6</td><td>2.11/1.66</td><td>124.5 cc</td><td>Late-1975-'76 455ci</td></tr><tr><td colspan="5">*Some have been reported to have a secondary stamp of "2"</td></tr></table> | ||
An alternative to using the larger chamber heads is to install dished pistons and use any of the smaller chambered performance heads. | An alternative to using the larger chamber heads is to install dished pistons and use any of the smaller chambered performance heads. | ||
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<tr valign="center" align="middle"><td bgcolor="#FFF8DC"><strong>Timing Cover:</strong></td> | <tr valign="center" align="middle"><td bgcolor="#FFF8DC"><strong>Timing Cover:</strong></td> | ||
<td bgcolor="#FFF8DC">1955-'59, 1960, 1961-'62 (inc. Tempest "Trophy" 4), 1963, 1963 1/2-'65, 1966-'67, 1968, 1969-'79<br>The only difference in the 1968-up timing covers are the timing indictor markings.<br> Some late model 400 and 301 covers have a plastic bolt on tab</td></tr> | <td bgcolor="#FFF8DC">1955-'59, 1960, 1961-'62 (inc. Tempest "Trophy" 4), 1963, 1963 1/2-'65, 1966-'67, 1968, 1969-'79<br>The only difference in the 1968-up timing covers are the timing indictor markings.<br> Some late model 400 and 301 covers have a plastic bolt on tab</td></tr> | ||
| − | </table> | + | </table><br> |
==Original build information== | ==Original build information== | ||
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*[http://www.hotrodders.com/kb/pontiac-engines Pontiac engines] | *[http://www.hotrodders.com/kb/pontiac-engines Pontiac engines] | ||
| − | {{warning|Be sure to verify '''all''' Pontiac info found on the internet, in print, or by word of mouth. There is a LOT of erroneous and misleading info out there- even from so-called experts, pros and gurus.}} | + | ==Caution== |
| + | {{warning|Be sure to verify '''''all''''' Pontiac info found on the internet (including here), in print, or by word of mouth. There is a LOT of erroneous and misleading info out there- even from so-called experts, pros and gurus.}}<br> | ||
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