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SN95 Cobras
97 Cobra short block power
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<blockquote data-quote="nomoretickets" data-source="post: 15575435" data-attributes="member: 160855"><p>The problem with going to 450+ hp w/ boost on these cars is that the pistons and rods and hypereutectic alloys so they tolerate all of about ZERO detonation. More boost more timing (i.e. making more power) increases the risk of detonation. The tune is absolutely CRITICAL in maintaining any semblance of reliability at 450+. At that level, some form of charge cooling is also pretty much a requirement (intercooler, aftercooler, etc.). To reduce the risk of detonation, you would probably want to look at a water/meth kit or e85. However, all this really does is reduce the risk of detonation. It only needs to happen once though to just obliterate one of those pistons or rods. Those you see who are going well above 450rwhp on the stock bottom end are likely running a very stable tune from a highly reputable tuner, and some combination of all the supporting mods to reduce the risk of detonation. They are also probably not driving the car a whole bunch or that hard. The other thing is that once you go past 450, the stock T45 becomes a weak point, as will the rear end if you are ever launching the car on sticky tires.</p><p></p><p>Greasy on here has a 97 with similar miles to yours, pushing 450ish through a paxton, FMIC, and solid tune, and has been running for years. Hopefully he can chime in with some input.</p></blockquote><p></p>
[QUOTE="nomoretickets, post: 15575435, member: 160855"] The problem with going to 450+ hp w/ boost on these cars is that the pistons and rods and hypereutectic alloys so they tolerate all of about ZERO detonation. More boost more timing (i.e. making more power) increases the risk of detonation. The tune is absolutely CRITICAL in maintaining any semblance of reliability at 450+. At that level, some form of charge cooling is also pretty much a requirement (intercooler, aftercooler, etc.). To reduce the risk of detonation, you would probably want to look at a water/meth kit or e85. However, all this really does is reduce the risk of detonation. It only needs to happen once though to just obliterate one of those pistons or rods. Those you see who are going well above 450rwhp on the stock bottom end are likely running a very stable tune from a highly reputable tuner, and some combination of all the supporting mods to reduce the risk of detonation. They are also probably not driving the car a whole bunch or that hard. The other thing is that once you go past 450, the stock T45 becomes a weak point, as will the rear end if you are ever launching the car on sticky tires. Greasy on here has a 97 with similar miles to yours, pushing 450ish through a paxton, FMIC, and solid tune, and has been running for years. Hopefully he can chime in with some input. [/QUOTE]
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