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2013-14 Shelby GT500
13/14 VS 11/12
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<blockquote data-quote="4VandHemiKiller" data-source="post: 16071262" data-attributes="member: 49914"><p>The iron block is also much weaker that the AL block in the main webbing and deck areas also.</p><p>The iron block shows main cap fretting and deck distortion (head gasket sealing) issues much sooner than the AL block. </p><p>Maintaining round bores is just one area the iron block falls way short of the AL block.</p><p></p><p>The iron block is reliable until about 1400 crank HP; per Mihovetz, which with a PD blower really isn't as much as it seems to the tire.</p><p>Most 1000+ HP PD superchargers consume ~150 HP driving themselves, and that is 150 HP worth of cylinder pressure the block has to cope with that never sees the rear tires.</p></blockquote><p></p>
[QUOTE="4VandHemiKiller, post: 16071262, member: 49914"] The iron block is also much weaker that the AL block in the main webbing and deck areas also. The iron block shows main cap fretting and deck distortion (head gasket sealing) issues much sooner than the AL block. Maintaining round bores is just one area the iron block falls way short of the AL block. The iron block is reliable until about 1400 crank HP; per Mihovetz, which with a PD blower really isn't as much as it seems to the tire. Most 1000+ HP PD superchargers consume ~150 HP driving themselves, and that is 150 HP worth of cylinder pressure the block has to cope with that never sees the rear tires. [/QUOTE]
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2013-14 Shelby GT500
13/14 VS 11/12
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