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2015+ S550 Mustangs
2015+ S550 Mustang Talk
Road & Track: Flat Crank 600hp 5.4 NA GT350
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<blockquote data-quote="blackvette101" data-source="post: 13479997" data-attributes="member: 130072"><p>although I agree with you about everything else. the 458 does not put down nowhere near 700 hp naturally aspirated more like 620-630 at the crank(still impressive from a 4.5 though). They usually gain 60-70 rwhp with headers, full exhaust, cat deletes, ecu tuning and airbox modifications. Most dyno between 450-470 stock and between 510-530 rwhp with the above mods.</p><p></p><p>Boss 302's are getting 550+ crank hp out of 5.0 liters. Yes that's with aftermarket parts but still that's 110 hp/liter. An extra 400cc with larger heads and cams to feed it the extra displacement that's knocking on 600 right there. With direct injection and the higher compression/timing you can run can probably more then make up for what the aftermarket has done to achieve that power level with todays roadrunners.</p></blockquote><p></p>
[QUOTE="blackvette101, post: 13479997, member: 130072"] although I agree with you about everything else. the 458 does not put down nowhere near 700 hp naturally aspirated more like 620-630 at the crank(still impressive from a 4.5 though). They usually gain 60-70 rwhp with headers, full exhaust, cat deletes, ecu tuning and airbox modifications. Most dyno between 450-470 stock and between 510-530 rwhp with the above mods. Boss 302's are getting 550+ crank hp out of 5.0 liters. Yes that's with aftermarket parts but still that's 110 hp/liter. An extra 400cc with larger heads and cams to feed it the extra displacement that's knocking on 600 right there. With direct injection and the higher compression/timing you can run can probably more then make up for what the aftermarket has done to achieve that power level with todays roadrunners. [/QUOTE]
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Road & Track: Flat Crank 600hp 5.4 NA GT350
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