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1 5/8" vs. 1 3/4" shorty headers - What is the real difference and is it worth it?
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<table border="0" cellpadding="1" cellspacing="1" width="99%" align="center"> <tr bgcolor="#000000"><td> <table border="0" width="100%" cellpadding="3" cellspacing="0"> <tr bgcolor="#000099"> <td colspan="2" align="left"> <font size="2" color="#ffffff" face="Verdana, Arial"> <b>T O P I C R E V I E W</b> </font></td></tr> <tr bgcolor="#dedfdf"> <td valign="top" width="18%"> <font size="2" face="Verdana, Arial"> <b>7-Up Man</b> <br /><small>Member # 8345</small> </font></td> <td width="82%"> <font size="1" face="Verdana, Arial"> <img src="https://californiafords.com/ubb/posticon.gif" border="0" alt=" - " /> posted <script language="JavaScript1.3" type="text/javascript"> document.writeln(timestamp(new Date(2008,10,19,18,49,0), dfrm, tfrm, 0, 0, 0, 0)); </script><hr /> </font> <font size="2" face="Verdana, Arial"> There is a fellow Norcal member selling MAC headers and they are 1 5/8" ceramic shorty headers. Do the 1 3/4" ones perform that much better? Are they worth the risk of no CARB OE number?<br /><br />Any help on this would be great <br /> </font> </td></tr> <tr bgcolor="#f7f7f7"> <td valign="top" width="18%"> <font size="2" face="Verdana, Arial"> <b>ALLSOFASTGT</b> <br /><small>Member # 7845</small> </font></td> <td width="82%"> <font size="1" face="Verdana, Arial"> <img src="https://californiafords.com/ubb/posticon.gif" border="0" alt=" - " /> posted <script language="JavaScript1.3" type="text/javascript"> document.writeln(timestamp(new Date(2008,10,19,19,2,0), dfrm, tfrm, 0, 0, 0, 0)); </script><hr /> </font> <font size="2" face="Verdana, Arial"> i got 1 5/8 on my jba headers i think long tubes come in 1 3/4 dont they <br /> </font> </td></tr> <tr bgcolor="#dedfdf"> <td valign="top" width="18%"> <font size="2" face="Verdana, Arial"> <b>7-Up Man</b> <br /><small>Member # 8345</small> </font></td> <td width="82%"> <font size="1" face="Verdana, Arial"> <img src="https://californiafords.com/ubb/posticon.gif" border="0" alt=" - " /> posted <script language="JavaScript1.3" type="text/javascript"> document.writeln(timestamp(new Date(2008,10,19,20,24,0), dfrm, tfrm, 0, 0, 0, 0)); </script><hr /> </font> <font size="2" face="Verdana, Arial"> I went to check out the headers that this member is selling and MAC offers both 1 5/8" and 1 3/4" shorty's. Just want to know if I am really limiting myself with the smaller headers. or will smog be a big concern with the big ones. <br /> </font> </td></tr> <tr bgcolor="#f7f7f7"> <td valign="top" width="18%"> <font size="2" face="Verdana, Arial"> <b>2stangs69-91</b> <br /><small>Member # 1951</small> </font></td> <td width="82%"> <font size="1" face="Verdana, Arial"> <img src="https://californiafords.com/ubb/posticon.gif" border="0" alt=" - " /> posted <script language="JavaScript1.3" type="text/javascript"> document.writeln(timestamp(new Date(2008,10,19,21,41,0), dfrm, tfrm, 0, 0, 0, 0)); </script><hr /> </font> <font size="2" face="Verdana, Arial"> Big ones are not smogable. A friend of mine did get his 1 3/4 mac equals by a smog tech he brought the EO number for the 1 5/8...told the tech his plate fell of the 1 3/4's lol. I run mac 1 5/8 equal shorties on my 91 and it has run in the 10's so you can make power with them.<br /> <br /> <small>[ November 20, 2008, 08:14 AM: Message edited by: 2stangs69-91 ]</small> <br /> </font> </td></tr> </table></td></tr></table> <br /> <br />
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