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Tech & Fab
Ford guys... header question, 89 5.0/302
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<blockquote data-quote="NotMatt" data-source="post: 1514866" data-attributes="member: 15947"><p>Working on a 89 302 bronco project right now, motor is the original fuel injected 5.0. Stock manifolds were both cracked, driver's side came off in two pieces. I have two different pairs of shorty headers I can pick from to replace them, but I'm seeing differences in the exhaust port size on them. The first picture is a set of Hedman shorties that I WANT to run, with a more square exhaust port. The second picture is of a pair of pacesetters that will require a bit of massaging to one of the outlets, but the exhaust port is more rounded, and matches the size of the exhaust port on my heads a little better.</p><p></p><p>I'm going to run Percy's dead-soft aluminum gaskets that I got for the round port 5.0 heads. My question is... can I run the square exhaust port headers on my heads with round'ish/oval ports? Is there enough surface area to seal up the gasket on the round port heads, or am I asking for trouble? Anyone have any insight here, I know there's a few Ford guys on here. :redneck:</p><p></p><p>Square Hedman headers:</p><p><img src="http://i1144.photobucket.com/albums/o498/errmatt/7020FA5B-741D-49C7-84A4-6419ACD9FF8E-9838-00000615080253C9_zpsf881d5b8.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>Rounder/Oval Pacesetter headers:</p><p><img src="http://i1144.photobucket.com/albums/o498/errmatt/57B1D64A-9829-4D77-96D6-643C740534EC-9838-000006151B5AB4A1_zps4db532bb.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="NotMatt, post: 1514866, member: 15947"] Working on a 89 302 bronco project right now, motor is the original fuel injected 5.0. Stock manifolds were both cracked, driver's side came off in two pieces. I have two different pairs of shorty headers I can pick from to replace them, but I'm seeing differences in the exhaust port size on them. The first picture is a set of Hedman shorties that I WANT to run, with a more square exhaust port. The second picture is of a pair of pacesetters that will require a bit of massaging to one of the outlets, but the exhaust port is more rounded, and matches the size of the exhaust port on my heads a little better. I'm going to run Percy's dead-soft aluminum gaskets that I got for the round port 5.0 heads. My question is... can I run the square exhaust port headers on my heads with round'ish/oval ports? Is there enough surface area to seal up the gasket on the round port heads, or am I asking for trouble? Anyone have any insight here, I know there's a few Ford guys on here. :redneck: Square Hedman headers: [IMG]http://i1144.photobucket.com/albums/o498/errmatt/7020FA5B-741D-49C7-84A4-6419ACD9FF8E-9838-00000615080253C9_zpsf881d5b8.jpg[/IMG] Rounder/Oval Pacesetter headers: [IMG]http://i1144.photobucket.com/albums/o498/errmatt/57B1D64A-9829-4D77-96D6-643C740534EC-9838-000006151B5AB4A1_zps4db532bb.jpg[/IMG] [/QUOTE]
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