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New Edge Cobras
03-04 cobra short blocks?
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<blockquote data-quote="SlowSVT" data-source="post: 13365064" data-attributes="member: 20202"><p>Unfortunately Ford stuck us with the 3 15/16" bore spacing which makes any thought of a short stroke/ big bore just that :nonono: It appears the Coyote and 5.8 are saddled with the legacy of the mod motor dimensions. This might have stemmed from having to shoehorn the 4.6 into the FWD Lincoln Continental when the mod motors first arrived. Ford may have done this to minimize the cost of having to completely re-tool for the newer engines. </p><p></p><p>They are really pushing the envelope with the new 5.8's 3.700 bore and resorted to nikesil over installing liners as not to remove too much material between the cylinders. A lean injector is going to cost you $5300 just for the block or you will need to get it sleeved which makes the walls paper thin. For me this is not a hot rodder's engine because of the expense involved having a supercharger connected to it. Looking over the 13 GT500 site it appears this fact has not gone unnoticed as very few of those guys are putting big blowers on them and seem to limit the mods to an exhaust and intake. At 650 hp its not worth screwing around and risking the warrantee. </p><p></p><p>If one's main concern is weight then aluminum is the only logical choice. My priorities are a little different and place "durability" at #1 above everything else. In that regard iron has a clear advantage over aluminum which for me is worth the 74 lb hit on the Boss 5.0 block.</p><p></p><p>Not sure if you've seen one in person but it's basically a Teksid cast in iron as it shares the same constant thickness main bearing bulkheads (the Romeo is webbed), same window venting, siamese bores, larger side bolts and NO JACKSCREWS!, a fatter pan rail and very similar water passages in the front of the engine. All the machine surfaces are "skim" passed and is made from a higher grade iron alloy over the production block. I would not hesitate to use this in a marine application :rockon:</p><p></p><p>[ATTACH=full]495137[/ATTACH]</p><p></p><p>This is without a doubt this is the most stout mod motor block available.</p></blockquote><p></p>
[QUOTE="SlowSVT, post: 13365064, member: 20202"] Unfortunately Ford stuck us with the 3 15/16" bore spacing which makes any thought of a short stroke/ big bore just that :nonono: It appears the Coyote and 5.8 are saddled with the legacy of the mod motor dimensions. This might have stemmed from having to shoehorn the 4.6 into the FWD Lincoln Continental when the mod motors first arrived. Ford may have done this to minimize the cost of having to completely re-tool for the newer engines. They are really pushing the envelope with the new 5.8's 3.700 bore and resorted to nikesil over installing liners as not to remove too much material between the cylinders. A lean injector is going to cost you $5300 just for the block or you will need to get it sleeved which makes the walls paper thin. For me this is not a hot rodder's engine because of the expense involved having a supercharger connected to it. Looking over the 13 GT500 site it appears this fact has not gone unnoticed as very few of those guys are putting big blowers on them and seem to limit the mods to an exhaust and intake. At 650 hp its not worth screwing around and risking the warrantee. If one's main concern is weight then aluminum is the only logical choice. My priorities are a little different and place "durability" at #1 above everything else. In that regard iron has a clear advantage over aluminum which for me is worth the 74 lb hit on the Boss 5.0 block. Not sure if you've seen one in person but it's basically a Teksid cast in iron as it shares the same constant thickness main bearing bulkheads (the Romeo is webbed), same window venting, siamese bores, larger side bolts and NO JACKSCREWS!, a fatter pan rail and very similar water passages in the front of the engine. All the machine surfaces are "skim" passed and is made from a higher grade iron alloy over the production block. I would not hesitate to use this in a marine application :rockon: [ATTACH=full]495137[/ATTACH] This is without a doubt this is the most stout mod motor block available. [/QUOTE]
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