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2020+ Shelby GT500 Mustang
2020 -vs 2014 GT500
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<blockquote data-quote="tt335ci03cobra" data-source="post: 16272971" data-attributes="member: 68944"><p>It’s a 2015/16 livernois build. We’re finding lots of wear on the thrush bearings, and fragments keep finding their way into the heads. It’s not the heads or components fault singularly, but if I used a 4.6L displacement to avoid chances of thrush failures or the common pitfalls of long stroke and or wide bore modular stuff, it would be making way less power than a comparable 5.0 coyote and would not have hit my goals.</p><p></p><p>When we did my build I was gut hunch thinking to do something like a destroked 5.4 down to a 5.1 with a 3.8 or 3.9” stroke and set it for 7500rpm, but I wanted to run a t56 and irs so I didn’t want a lot of overkill torque which would break everything.</p><p></p><p>We specked a very strong 5.3 build but I should have just done a 4.6 or 4.75 build and revved it to maybe 9k on occasion. Live and learn. That said, high rpm engines die quickest.</p><p></p><p>I’m too jaded now to keep dumping money on car parts. I don’t run business like this so I’ve said to hell with it, if the variables are likely going to blow it up anyway, I’ll just use mills from wrecked trucks and mustangs as I find them and keep a decent forced induction, oil, fuel ecu (future stand alone), cooling system and suspension/chassis, and hot swap mills as they pop.</p><p></p><p>I can blow up 5 to 10 coyotes and my time swapping them for the cost of one full dresser mod mill, and the odds are honestly higher to pop the full dresser mod mill faster than the coyotes from what I’ve seen. Virtually every 4.165” stroke build I see revving past 7k blows, virtually every big bore striker fails, etc. 4.6 builds and destroked 5.4’s last well enough, but they all end up failing eventually anyways.</p><p></p><p>Main reason I’ve jumped ship to coyote power sources is cost and hassle. I hate the sound compared to modular’s though. I’ll always prefer mod mills personally but the coyote is way more practical.</p><p></p><p>I know how to make power with mod mill parts, and have forgotten more than most people know today about them. I run an fr500c intake manifold off a cammer multimatic nos line to give you an idea. I was/am a mod mill fanatic to some extents. I knew my combo would be a total dog with a sheet metal unit, and wouldn’t make much power with a cobra intake or so on.</p><p></p><p>I’ve moved on. I still want to salvage and get decent miles out of my 5.3, but I don’t expect to get 15,000 more miles out of it before a catastrophic failure. Good news is I’ll already have coyote when that happens and already have been picking up parts like boss cams etc.</p><p></p><p>•10.3/1 f150 coyote and 6r80 trans for $2500. My longblock with heads and trans work was north of $25k. That’s 10/1.</p><p>•gt350 or 2018+ gt intake manifold is $750 and less. My fr500c was $2500.</p><p>•heads and cams wise, a set of boss cams and hardware is $400 with shipping, tip, tax, toll, freight, and lunch.</p><p>•tuning wise, just go easy on it all. 800whp on pump gas with 8-9psi. On race gas, guys have hit 1200whp with 2018 f150 internals. on a soft tune of say 1000whp, it is still plenty great for the money spent and enough for north of 160 in the 1/4.</p><p></p><p>My point is yes, I know a mod setup can make excellent peak power and optimized, it can do very impressive things, but I’d rather put that money into things that generate a return. I’m 30 and my biggest regret is spending the money I made in my teens and 20’s like I’d be able to easily make that my whole life. Had I invested it then until now, I’d have monthly residual income to build a mod combo every year, or more importantly put huge down payments on rental homes every 5 years/pay em off.</p></blockquote><p></p>
[QUOTE="tt335ci03cobra, post: 16272971, member: 68944"] It’s a 2015/16 livernois build. We’re finding lots of wear on the thrush bearings, and fragments keep finding their way into the heads. It’s not the heads or components fault singularly, but if I used a 4.6L displacement to avoid chances of thrush failures or the common pitfalls of long stroke and or wide bore modular stuff, it would be making way less power than a comparable 5.0 coyote and would not have hit my goals. When we did my build I was gut hunch thinking to do something like a destroked 5.4 down to a 5.1 with a 3.8 or 3.9” stroke and set it for 7500rpm, but I wanted to run a t56 and irs so I didn’t want a lot of overkill torque which would break everything. We specked a very strong 5.3 build but I should have just done a 4.6 or 4.75 build and revved it to maybe 9k on occasion. Live and learn. That said, high rpm engines die quickest. I’m too jaded now to keep dumping money on car parts. I don’t run business like this so I’ve said to hell with it, if the variables are likely going to blow it up anyway, I’ll just use mills from wrecked trucks and mustangs as I find them and keep a decent forced induction, oil, fuel ecu (future stand alone), cooling system and suspension/chassis, and hot swap mills as they pop. I can blow up 5 to 10 coyotes and my time swapping them for the cost of one full dresser mod mill, and the odds are honestly higher to pop the full dresser mod mill faster than the coyotes from what I’ve seen. Virtually every 4.165” stroke build I see revving past 7k blows, virtually every big bore striker fails, etc. 4.6 builds and destroked 5.4’s last well enough, but they all end up failing eventually anyways. Main reason I’ve jumped ship to coyote power sources is cost and hassle. I hate the sound compared to modular’s though. I’ll always prefer mod mills personally but the coyote is way more practical. I know how to make power with mod mill parts, and have forgotten more than most people know today about them. I run an fr500c intake manifold off a cammer multimatic nos line to give you an idea. I was/am a mod mill fanatic to some extents. I knew my combo would be a total dog with a sheet metal unit, and wouldn’t make much power with a cobra intake or so on. I’ve moved on. I still want to salvage and get decent miles out of my 5.3, but I don’t expect to get 15,000 more miles out of it before a catastrophic failure. Good news is I’ll already have coyote when that happens and already have been picking up parts like boss cams etc. •10.3/1 f150 coyote and 6r80 trans for $2500. My longblock with heads and trans work was north of $25k. That’s 10/1. •gt350 or 2018+ gt intake manifold is $750 and less. My fr500c was $2500. •heads and cams wise, a set of boss cams and hardware is $400 with shipping, tip, tax, toll, freight, and lunch. •tuning wise, just go easy on it all. 800whp on pump gas with 8-9psi. On race gas, guys have hit 1200whp with 2018 f150 internals. on a soft tune of say 1000whp, it is still plenty great for the money spent and enough for north of 160 in the 1/4. My point is yes, I know a mod setup can make excellent peak power and optimized, it can do very impressive things, but I’d rather put that money into things that generate a return. I’m 30 and my biggest regret is spending the money I made in my teens and 20’s like I’d be able to easily make that my whole life. Had I invested it then until now, I’d have monthly residual income to build a mod combo every year, or more importantly put huge down payments on rental homes every 5 years/pay em off. [/QUOTE]
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