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2013-14 Shelby GT500
Just got a motor build quote and have questions
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<blockquote data-quote="Catmonkey" data-source="post: 15728275" data-attributes="member: 124025"><p>I don't think 6,500 is necessarily a problem, but seeing 7,000 rpm on a repetitive basis might be pushing it on a stock bottom end. At 800 rwhp, you're looking at well over 900 hp at the crank. When you're increasing power input by almost 40% over design specs, you're exceeding the safe limit on a lot of the OEM internal components. It really is a crap shoot as to which engines hold together and which ones don't. They're pretty durable engines for what they are. If it pops, build the next one better. Knowing the price tag of doing it right is a bit of a shock. I did mine a few years back and did a lot of the final assembly work myself, but I bet I'm not that far off the numbers thrown around here. What I don't see in this thread is the cost of upgrading timing components and liberal use of ARP fasteners. These come at fairly high costs too.</p><p></p><p>Unless you plan on running cams, I think the stock timing stuff is adequate. Now, if you're running a 2 step, do the upgrade.</p></blockquote><p></p>
[QUOTE="Catmonkey, post: 15728275, member: 124025"] I don't think 6,500 is necessarily a problem, but seeing 7,000 rpm on a repetitive basis might be pushing it on a stock bottom end. At 800 rwhp, you're looking at well over 900 hp at the crank. When you're increasing power input by almost 40% over design specs, you're exceeding the safe limit on a lot of the OEM internal components. It really is a crap shoot as to which engines hold together and which ones don't. They're pretty durable engines for what they are. If it pops, build the next one better. Knowing the price tag of doing it right is a bit of a shock. I did mine a few years back and did a lot of the final assembly work myself, but I bet I'm not that far off the numbers thrown around here. What I don't see in this thread is the cost of upgrading timing components and liberal use of ARP fasteners. These come at fairly high costs too. Unless you plan on running cams, I think the stock timing stuff is adequate. Now, if you're running a 2 step, do the upgrade. [/QUOTE]
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2013-14 Shelby GT500
Just got a motor build quote and have questions
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