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Cobra Forums
2013-14 Shelby GT500
lets talk spray bore vs sleeved blocks
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<blockquote data-quote="biminiLX" data-source="post: 16612135" data-attributes="member: 7795"><p>Good question and yes, the ‘13-14 piston is made by Mahle and is basically as good as a Cobra Jet piston proven to 1500+</p><p>It’s actually more the ring package (and gap) on the OEM piston that needs to be considered.</p><p>I like to look and things as a system or combination and from talking to 3-4 guys who are actually building and racing them, the consistent answers were all about the same 1200hp (and to a lesser degree 7500rpm).</p><p>As a system, until you reach for more than 1200hp, you’re safe to rely on the factory PTWA and crank and block and cylinder flow.</p><p>Basically I’ve maxed out my current parts and to push it next level, I’ll be sleeving the block, porting the heads, upgrading the crank and rotator and valves, etc</p><p>Then you also reevaluate things and if you’ve never been in a 1000rwhp car; maybe be realistic, save yourself close to $10k and recognize the car itself needs major updates for 1200hp.</p><p>I’m currently at 1110rwhp SAE and that is stock unsleeved block, stock crank, unported heads with stock valves. Plus the assembly and machining from a shop with a great reputation in proving this combo at the strip the same way I’ll be pushing it hardest.</p><p>-J</p></blockquote><p></p>
[QUOTE="biminiLX, post: 16612135, member: 7795"] Good question and yes, the ‘13-14 piston is made by Mahle and is basically as good as a Cobra Jet piston proven to 1500+ It’s actually more the ring package (and gap) on the OEM piston that needs to be considered. I like to look and things as a system or combination and from talking to 3-4 guys who are actually building and racing them, the consistent answers were all about the same 1200hp (and to a lesser degree 7500rpm). As a system, until you reach for more than 1200hp, you’re safe to rely on the factory PTWA and crank and block and cylinder flow. Basically I’ve maxed out my current parts and to push it next level, I’ll be sleeving the block, porting the heads, upgrading the crank and rotator and valves, etc Then you also reevaluate things and if you’ve never been in a 1000rwhp car; maybe be realistic, save yourself close to $10k and recognize the car itself needs major updates for 1200hp. I’m currently at 1110rwhp SAE and that is stock unsleeved block, stock crank, unported heads with stock valves. Plus the assembly and machining from a shop with a great reputation in proving this combo at the strip the same way I’ll be pushing it hardest. -J [/QUOTE]
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2013-14 Shelby GT500
lets talk spray bore vs sleeved blocks
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