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SVT Shelby GT500
Rebuild & Port TVS 2.3 or Gen 4 Whipple 2.9?
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<blockquote data-quote="Catmonkey" data-source="post: 16552379" data-attributes="member: 124025"><p>The 2.65 Gen 3 has been showing "out of stock" on VMP's website for most of 2020. I'm thinking it's simply been replaced by the 3R and just hasn't been removed from the website. I don't think there's a whole lot of power difference between the two up to ~900 rwhp, but the 3 tapers off and the 3R keeps making power. The big monoblades the 3 was designed around didn't pan out, so there's no reason to market and peddle it.</p><p></p><p>Whipple's Gen 4 and 5 leave the Whipple Gen 2 technology pretty far behind, so they're not comparable platforms. With the Christmas discount, the Gen 4 is "used blower" cheap for a brand new blower.</p><p></p><p>I'm not knocking the 2R TVS, but it's starting to run out of steam beyond 800 rwhp. To take advantage of E85 and/or cams, you have to spin it pretty hard and at that point, I just think a bigger blower that has the ability to deliver more boost at more reasonable blower rpm levels. It becomes a better option, but bigger also comes with a cost. I think the 2R is the perfect blower for a bolt-on, pump gas 5.4. </p><p></p><p>All blowers are going to have a sweet spot and if you match that sweet spot to your actual rpm range and airflow requirements, you should be a happy camper. One reason you see such fat torque curves for the 2.3 on pump gas is it makes good boost in the low and mid-range, where a bigger blower is out of it's efficiency range and is down on boost until it's spun at higher rpm. Torque is a function of horsepower. Typically a bigger blower is going to make better power at the peak, but I think you have to analyze power in between. On the other hand, the 2.3 is somewhat tapped out if you start doing mods that demand greater airflow. I think some of the newer blower technology is focusing on better boost output at these lower rpm levels than their predecessors.</p></blockquote><p></p>
[QUOTE="Catmonkey, post: 16552379, member: 124025"] The 2.65 Gen 3 has been showing "out of stock" on VMP's website for most of 2020. I'm thinking it's simply been replaced by the 3R and just hasn't been removed from the website. I don't think there's a whole lot of power difference between the two up to ~900 rwhp, but the 3 tapers off and the 3R keeps making power. The big monoblades the 3 was designed around didn't pan out, so there's no reason to market and peddle it. Whipple's Gen 4 and 5 leave the Whipple Gen 2 technology pretty far behind, so they're not comparable platforms. With the Christmas discount, the Gen 4 is "used blower" cheap for a brand new blower. I'm not knocking the 2R TVS, but it's starting to run out of steam beyond 800 rwhp. To take advantage of E85 and/or cams, you have to spin it pretty hard and at that point, I just think a bigger blower that has the ability to deliver more boost at more reasonable blower rpm levels. It becomes a better option, but bigger also comes with a cost. I think the 2R is the perfect blower for a bolt-on, pump gas 5.4. All blowers are going to have a sweet spot and if you match that sweet spot to your actual rpm range and airflow requirements, you should be a happy camper. One reason you see such fat torque curves for the 2.3 on pump gas is it makes good boost in the low and mid-range, where a bigger blower is out of it's efficiency range and is down on boost until it's spun at higher rpm. Torque is a function of horsepower. Typically a bigger blower is going to make better power at the peak, but I think you have to analyze power in between. On the other hand, the 2.3 is somewhat tapped out if you start doing mods that demand greater airflow. I think some of the newer blower technology is focusing on better boost output at these lower rpm levels than their predecessors. [/QUOTE]
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Rebuild & Port TVS 2.3 or Gen 4 Whipple 2.9?
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