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Corvette
Corvette Performance
What's so special about these LS3, LSA, LS9 heads?
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<blockquote data-quote="Arun" data-source="post: 32278" data-attributes="member: 1488"><p>For a casting that can be had under $250-they're badass!!!!!</p><p></p><p>We have done a few A&A kits on 08 and up LS3's and I was really impressed about how much power they made with very little boost and a very small cam. </p><p></p><p>For example-a 2008 C6, stage 2 blower cam ( 226/238) and a A&A S-trim kit making 8 psi.</p><p></p><p><img src="http://i127.photobucket.com/albums/p150/eb02z06/Georgesc6675whp.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>A 2010 Camaro with a Procharger D1SC kit-12 psi</p><p></p><p><img src="http://i127.photobucket.com/albums/p150/eb02z06/Dans2010D1SC.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>I've tuned alot of blower setups from 01 to 04 and even with the good 243 heads and a nice cam-they don't come anywhere near the power and torque produced. </p><p></p><p>So I picked up a set of LSA heads, these are found on the 2010 Cadillac CTS-V's and are the same castings found on the ZR1.</p><p></p><p><img src="http://i127.photobucket.com/albums/p150/eb02z06/2012-12-13094459.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p><img src="http://i127.photobucket.com/albums/p150/eb02z06/2012-12-13094651.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p><img src="http://i127.photobucket.com/albums/p150/eb02z06/100_0473.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p><img src="http://i127.photobucket.com/albums/p150/eb02z06/2012-12-13172251.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>The ports are huge-260 cc, the intake valve is 2.16. </p><p></p><p>These heads are stronger than a typical LS3 casting as there made from T356alunimum and are rotocast. </p><p></p><p>Now the flow bench.</p><p></p><p><img src="http://i127.photobucket.com/albums/p150/eb02z06/2012-12-15111525.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p><img src="http://i127.photobucket.com/albums/p150/eb02z06/2012-12-15113510.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>The numbers are "as cast". Those are some amazing numbers from an "as cast" head. The shop I took the heads to is Forrest and Forrest. Glen and Paul are a great bunch of guys with alot of old school SBC and BBC experience. </p><p></p><p>And when Paul was finished and looked at the numbers-he was impressed. Those kind of numbers are what you find on a N/A 600 horse motor. </p><p></p><p>But I'm not done yet. In the next few weeks these heads are off the California to get CNC port job on the intake and exhaust runners. </p><p></p><p>When I get them back-there going back on the flow bench for some more testing.</p></blockquote><p></p>
[QUOTE="Arun, post: 32278, member: 1488"] For a casting that can be had under $250-they're badass!!!!! We have done a few A&A kits on 08 and up LS3's and I was really impressed about how much power they made with very little boost and a very small cam. For example-a 2008 C6, stage 2 blower cam ( 226/238) and a A&A S-trim kit making 8 psi. [IMG]http://i127.photobucket.com/albums/p150/eb02z06/Georgesc6675whp.jpg[/IMG] A 2010 Camaro with a Procharger D1SC kit-12 psi [IMG]http://i127.photobucket.com/albums/p150/eb02z06/Dans2010D1SC.jpg[/IMG] I've tuned alot of blower setups from 01 to 04 and even with the good 243 heads and a nice cam-they don't come anywhere near the power and torque produced. So I picked up a set of LSA heads, these are found on the 2010 Cadillac CTS-V's and are the same castings found on the ZR1. [IMG]http://i127.photobucket.com/albums/p150/eb02z06/2012-12-13094459.jpg[/IMG] [IMG]http://i127.photobucket.com/albums/p150/eb02z06/2012-12-13094651.jpg[/IMG] [IMG]http://i127.photobucket.com/albums/p150/eb02z06/100_0473.jpg[/IMG] [IMG]http://i127.photobucket.com/albums/p150/eb02z06/2012-12-13172251.jpg[/IMG] The ports are huge-260 cc, the intake valve is 2.16. These heads are stronger than a typical LS3 casting as there made from T356alunimum and are rotocast. Now the flow bench. [IMG]http://i127.photobucket.com/albums/p150/eb02z06/2012-12-15111525.jpg[/IMG] [IMG]http://i127.photobucket.com/albums/p150/eb02z06/2012-12-15113510.jpg[/IMG] The numbers are "as cast". Those are some amazing numbers from an "as cast" head. The shop I took the heads to is Forrest and Forrest. Glen and Paul are a great bunch of guys with alot of old school SBC and BBC experience. And when Paul was finished and looked at the numbers-he was impressed. Those kind of numbers are what you find on a N/A 600 horse motor. But I'm not done yet. In the next few weeks these heads are off the California to get CNC port job on the intake and exhaust runners. When I get them back-there going back on the flow bench for some more testing. [/QUOTE]
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Corvette
Corvette Performance
What's so special about these LS3, LSA, LS9 heads?
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