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2015+ Shelby GT350 Mustang
New Engine, maybe from a 14 Gt500
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<blockquote data-quote="ANGREY" data-source="post: 15875163" data-attributes="member: 188865"><p>I don't think it's a balance or an NVH issue.</p><p></p><p>For one, I think there was a bad rumor that spread and a lot of people just parroted it, that flat plane crank motors, particularly the voodoo can't "handle" boost.</p><p></p><p>There's SOME truth to this in that a 12:1 compression engine isn't exactly the best setup for boost, at least not as much as most people are accustomed to running. This reminds me of the vettes back in the day that would pop if you tried to run more than 6-8 psi on them in all but comfortable climate conditions.</p><p></p><p>I had a 5.4 motor (sister/back up) engine from MMR that made 1500+ hp and it was setup at 8.8:1 compression for high boost when they set it up for die hard power.</p><p></p><p>Hennessey lowers the compression on their 350. It's a better setup to safely handle anything more than a few psi to lower it from the 12:1 compression.</p><p></p><p>The second issue that's legit is the torque on the snout. I'd be hesitant to crank on the serpentine with a small pulley.</p><p></p><p>But those issues aside, I see no reason why someone couldn't run the largest pulley, have the heads ported to lower the compression or even better, swap the forged aluminum pistons for something stronger (with a slight dish to lower the comp).</p><p></p><p>The voodoo already flows really REALLY well, so it's not like you have to add a ton of boost to get good power.</p><p></p><p>Honestly, I wouldn't want to run more than 750 or 800 rwhp which is going to be WAY more than the chassis/drivetrain/rear can handle. Even at those power levels, the pioneers of these blower 350s were seeing clutch slip and were running DSS and aftermarket upgraded halfshafts.</p><p></p><p>The tranny isn't exactly setup to be as beefy and capable as the T56 on purpose (weight savings) so even if you upgrade the clutch and the shafts, you run the risk that under the right hook you're overwhelming the 3160.</p><p></p><p>These cars are just NOT setup or meant to be drag monsters and so a high hp/torque 350 would simply be a roll race monster or a half mile car.</p><p></p><p>I've been considering doing a blower at the end of my warranty but I absolutely understand what I'm giving up. The car will be more difficult to drive on a track and in any sort of "technical" tracks, might even be slower and less forgiving. I've also conceded that in order to make it safe and bullet proof, I'm probably going to have to upgrade the clutch and shafts to go along with the additional torque.</p><p></p><p>All that being said, I think you're much better off to start off with a 500 and make it turn better or start off with a 350 and give it some more ballz. But trying to basterdize the two is going to be MORE expensive and INFINTELY more of a headache.</p></blockquote><p></p>
[QUOTE="ANGREY, post: 15875163, member: 188865"] I don't think it's a balance or an NVH issue. For one, I think there was a bad rumor that spread and a lot of people just parroted it, that flat plane crank motors, particularly the voodoo can't "handle" boost. There's SOME truth to this in that a 12:1 compression engine isn't exactly the best setup for boost, at least not as much as most people are accustomed to running. This reminds me of the vettes back in the day that would pop if you tried to run more than 6-8 psi on them in all but comfortable climate conditions. I had a 5.4 motor (sister/back up) engine from MMR that made 1500+ hp and it was setup at 8.8:1 compression for high boost when they set it up for die hard power. Hennessey lowers the compression on their 350. It's a better setup to safely handle anything more than a few psi to lower it from the 12:1 compression. The second issue that's legit is the torque on the snout. I'd be hesitant to crank on the serpentine with a small pulley. But those issues aside, I see no reason why someone couldn't run the largest pulley, have the heads ported to lower the compression or even better, swap the forged aluminum pistons for something stronger (with a slight dish to lower the comp). The voodoo already flows really REALLY well, so it's not like you have to add a ton of boost to get good power. Honestly, I wouldn't want to run more than 750 or 800 rwhp which is going to be WAY more than the chassis/drivetrain/rear can handle. Even at those power levels, the pioneers of these blower 350s were seeing clutch slip and were running DSS and aftermarket upgraded halfshafts. The tranny isn't exactly setup to be as beefy and capable as the T56 on purpose (weight savings) so even if you upgrade the clutch and the shafts, you run the risk that under the right hook you're overwhelming the 3160. These cars are just NOT setup or meant to be drag monsters and so a high hp/torque 350 would simply be a roll race monster or a half mile car. I've been considering doing a blower at the end of my warranty but I absolutely understand what I'm giving up. The car will be more difficult to drive on a track and in any sort of "technical" tracks, might even be slower and less forgiving. I've also conceded that in order to make it safe and bullet proof, I'm probably going to have to upgrade the clutch and shafts to go along with the additional torque. All that being said, I think you're much better off to start off with a 500 and make it turn better or start off with a 350 and give it some more ballz. But trying to basterdize the two is going to be MORE expensive and INFINTELY more of a headache. [/QUOTE]
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2015+ Shelby GT350 Mustang
New Engine, maybe from a 14 Gt500
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