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SVT Shelby GT500
Which GT500 Is Best For Me? 07-09 / 10 / 11-12 / 13-14
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<blockquote data-quote="Catmonkey" data-source="post: 16114746" data-attributes="member: 124025"><p>No, I would have just had my 5.4 sleeved. I blew a head gasket, so both the heads and the block deck would have had to have been resurfaced. The cost between sleeving and a bare block wasn't that far apart when you consider I would have to ship my block freight for a rebuild. It was easier to start a build before I pulled the engine. Typical turn around time for a rebuild is several weeks, if not longer. </p><p></p><p></p><p>3.68" is the standard bore diameter of a 5.8. When I say big power, I'm talking north of 1,200 hp and 25 psi of boost. At pump gas levels, and a little beyond, there's no problem. The bore centers are pretty tight on a modular, so the 5.8 bore doesn't leave that much material between cylinders. But Ford is using the same bore on the Voodoo and 2020 GT500. If you're making 2.25 hp per cubic inch, that bore change is worth another 54 hp. With custom pistons, you could choose whatever bore size you desire and end up with something between 330 and 358 cubic inches, the latter using a 3.7" bore.</p></blockquote><p></p>
[QUOTE="Catmonkey, post: 16114746, member: 124025"] No, I would have just had my 5.4 sleeved. I blew a head gasket, so both the heads and the block deck would have had to have been resurfaced. The cost between sleeving and a bare block wasn't that far apart when you consider I would have to ship my block freight for a rebuild. It was easier to start a build before I pulled the engine. Typical turn around time for a rebuild is several weeks, if not longer. 3.68" is the standard bore diameter of a 5.8. When I say big power, I'm talking north of 1,200 hp and 25 psi of boost. At pump gas levels, and a little beyond, there's no problem. The bore centers are pretty tight on a modular, so the 5.8 bore doesn't leave that much material between cylinders. But Ford is using the same bore on the Voodoo and 2020 GT500. If you're making 2.25 hp per cubic inch, that bore change is worth another 54 hp. With custom pistons, you could choose whatever bore size you desire and end up with something between 330 and 358 cubic inches, the latter using a 3.7" bore. [/QUOTE]
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SVT Shelby GT500
Which GT500 Is Best For Me? 07-09 / 10 / 11-12 / 13-14
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