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Modding a scat pack can be a sketchy journey. If you are looking to achieve those numbers the safest/cheapest way would prob be buying a hellcat. Most FBO e85 scats will make around 450ish wheel NA. That includes throttle body, flex fuel kit, full exhaust, ported intake manifold throttle body,injectors, fuel pump and more and right there is a couple thousand. And if you were to go a boosted route like a procharger or whipple your looking at an easy 8-10k installed. Also tuning is required and is a pain because you need to buy a new ecu or have yours unlocked. With the Fbo and the boost added you will be around 500-550 wheel but unfortunatley at that power level, the integrity of the motor can be at risk because the 392s like to blow at 6-7 pounds of boost. In conclusion, it is possible but is very costly, and there is a lot of risk, therefore purchasing a hellcat might be your best bet. Btw hellcats stock make around 620ish wheel. I cant tell you the amount of people that went ahead modding their scatpack, ending up rebuilding the motor or swapping it with a 426 and at that point its a money pit. Hope this helps friend!
So, you want to add close to 100 rwhp. You need about $18,000 and a cam, intake manifold (ported or upgrade), exhaust, injectors, intake/exhaust valves, throttle body, tune. Unless of course you can do all the work yourself. You basically have to disassemble the entire top half of the engine past the heads. Super expensive.
Thanks so much I thought it would be possible I have a 16 ss and I got 535 too the wheel I just got a wide body scat pack charger and figure I could make a sleeper out of it but thanks it’s not worth me spending money in it to only get 450 ish to the wheel a want a hell cat but lord knows the new ones are so expensive
And I can easily tell you that I know triple the amount of people who tried to modify their scat pack and it never ran right again. They usually end up just buying a Hellcat. One of these days I'm going to out this guy, because I've talked about him a half dozen times here. He is a moderator on a Challenger FB page. He paid a shop to do an air ride and ProCharger on his scat. Well, the shop talked him into stroking it to a 440, going wild on some of the internals and put on a much larger D trim ProCharger. He claimed it was a 1,000rwhp build... but knowing what I know about D trim ProChargers, he was likely pushing 850-900rwhp.
On the dyno, they blew a head gasket. 2 months later, they fixed it and got it to run. On delivery day, the guy was using FB live and "punched it" to WOT and his air ride line got caught in his springs or something and it instantly bled out and bottomed out, blew his tire, ran off the road and hit a curb at about 45mph. Tore the right front wheel off, broke the radiator, the ProCharger mounting bracket, broke a motor mount, upper/lower control arms, wheel hub, destroyed the right door panel and damaged the rear quarter panel and deployed all the air bags.
Total bill to fix it: $21,000. He sued the shop twice and lost both times. He claims it cost him $15,000 in attorneys fees. Still can't afford to fix his car. His build cost was over $35,000.
So, if you add it up, $61,000 50th Scat Pack Shaker + $35,000 build + 21,000 repair bill + $15,000 attorneys fees on a failed lawsuit = a broken $132,000 Scat Pack.
And, to add insult to injury, about a week before he got the car from the shop, I told him that they're building it stupid and he needed to get a second opinion, mainly because the lines for the air ride weren't even secured away from the suspension. I told him that most folks don't do air ride on big power cars because it's a great way to wreck yourself. I saved the post as he called me an over-cautious boomer who was jealous that someone younger had a cool car.
But, that wasn't the case as I could care less about the people or drivers involved. My focus is always on the car and the engineering, and his build was terribly built. Such is the risk of modifying your car. You have to know the shop, the people doing the work, and have a fine eye for detail so you can go back behind them to ensure your build is done properly. Simply taking a shop's word for it is not good enough.
It's more expensive to build out a Scat Pack than it is to buy a base Hellcat. Either the engine work will cost you a lot for an NA build, or the supporting mods needed to run FI will bury you. If you do pistons/rods and a blower, you'll also need a rear diff and a transmission. Either way, you're looking at around 20 grand. On an NA build you'll get somewhere in the 500 range, give or take. On an FI build for the same cost... around 700 to the wheel on a conservative, streetable build.
My friend Eric is pushing around 700hp to the wheels on his Scat Pack Challenger... and yeah, he blew it up originally trying to do exactly what you are thinking about doing... Ultimately, unless the cars paid for, I wouldnt even bother. Not worth it..
moparconnectionmagazine.com
Gallery: Shaking And Breaking With Eric Emery’s Procharged Challenger 392 Shaker - Mopar Connection Magazine | A comprehensive daily resource for Mopar enthusiast news, features and the latest Mopar tech
It’s fairly easy for any modern Mopar fan who wants to daily drive a muscle car with gobs of power to buy a Dodge Challenger SRT Hellcat. For someone who wants that power but also loves the classic look of the Shaker hood, the Hellcat model is not an option. That classic Shaker look was […]
moparconnectionmagazine.com
There sure is a lot of truth spoken here and you should listen.
I have a 300 that I was building, "still am", then bought a Trackhawk. Everybody in my life said to just put 300 back to stock and sell all the stuff, you have a Trackhawk. Nope, I'm hard headed and love the 300, so I continued on, you can follow along in the LXforum, "Whipple build". I call it the money pit now. Pain in the A$$, but I love the car. Advantages, cheap insurance.
Save your money, drive the Scat, then trade up to the Hellcat. In the long run you'll thank everybody here.
I have a 300 that I was building, "still am", then bought a Trackhawk. Everybody in my life said to just put 300 back to stock and sell all the stuff, you have a Trackhawk. Nope, I'm hard headed and love the 300, so I continued on, you can follow along in the LXforum, "Whipple build". I call it the money pit now. Pain in the A$$, but I love the car. Advantages, cheap insurance.
Save your money, drive the Scat, then trade up to the Hellcat. In the long run you'll thank everybody here.
If you're doing all your own labor, it /might/ be cost effective to build it--$/HP--especially if you enjoy doing it.
If you aren't doing all your own labor it is highly improbable--economies of scale mean just buying a HC is likely much cheaper $/HP.
If you aren't doing all your own labor it is highly improbable--economies of scale mean just buying a HC is likely much cheaper $/HP.
It's cheap insurance until you try to file a claim with a highly modified car. The instant that adjuster gets wind of the fact that it's supercharged... they drop the coverage if the mod wasn't reported. If you do report the mod, they cancel your policy at the renew date unless you have specialty insurance. On my 1,024whp Mustang, I had comprehensive and collision with GEICO, but with a rider that said the engine and drivetrain were not included in the policy. I had to take out a second policy to cover the engine and drivetrain. I was paying in excess of $1,500/mo for that car's insurance.
$6,000 for a MMX 6.4L based 422 forged short block.
$1000 for PSI springs/pushrods installed in heads
$1500 set of Longtubes; Install is free when getting the heads worked on
$700 for mild-aggressive cam
$2500 for installation of short block
$1000 for shop fluids, trans and engine dyno tuned
$3000 for Wheels and tires for better traction
Total cost: $15,700
Your HP 70 will handle up to around 600 rwhp but with a trans tune it will decrease the chances of problems.
Your differential and axles are fine and will hold up to 600 rwhp
You are looking at around 530-540 rwhp with a solid motor NA
New Scat Pack with a few options is around $50,000 so all in at $65,700
This is the cheapest way I know of to get NA 540 rwhp. If you start looking at a blower you will always be wondering if the 6.4L will hold up with the top ring lands being a very weak link. Many do it though without problems. Blower, install and tune will cost around $10,000. On 6 lbs of boost., A bit more than 550 rwhp.
Either way you are very close to a Base Hellcat, no options but New with warranty. Depends on year of your scat, is it paid off and like said, do you wrench yourself. It can be very satisfying if you do the work yourself and save a bunch of $$
www.modernmusclextreme.com
$1000 for PSI springs/pushrods installed in heads
$1500 set of Longtubes; Install is free when getting the heads worked on
$700 for mild-aggressive cam
$2500 for installation of short block
$1000 for shop fluids, trans and engine dyno tuned
$3000 for Wheels and tires for better traction
Total cost: $15,700
Your HP 70 will handle up to around 600 rwhp but with a trans tune it will decrease the chances of problems.
Your differential and axles are fine and will hold up to 600 rwhp
You are looking at around 530-540 rwhp with a solid motor NA
New Scat Pack with a few options is around $50,000 so all in at $65,700
This is the cheapest way I know of to get NA 540 rwhp. If you start looking at a blower you will always be wondering if the 6.4L will hold up with the top ring lands being a very weak link. Many do it though without problems. Blower, install and tune will cost around $10,000. On 6 lbs of boost., A bit more than 550 rwhp.
Either way you are very close to a Base Hellcat, no options but New with warranty. Depends on year of your scat, is it paid off and like said, do you wrench yourself. It can be very satisfying if you do the work yourself and save a bunch of $$
422 HEMI Stroker Engine Short Block - 6.4L Based by Modern Muscle Performance
422 HEMI Stroker Engine- 6.4/6.2 Based by Modern Muscle Performance
www.modernmusclextreme.com
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346 Posts
When I had my Scat Pack (2016) I looked into supercharging it. It would have cost $20,000.00 parts and labor. I traded it in for a Hell Cat.
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1,635 Posts
I've come to the conclusion that a used Red Eye is the way to go, you shouldn't have to change out as many parts so you won't spend a fortune.
If you want to make your own street legal funny cat get an R/T or 300S, they share the same platform and if you end up messing it up, a 2016 probably ran you less than $20K depending on condition. I can understand someone buying a Scatt and over time switching parts out but to spend $50K on a car then spend another $25K to make it a car that you could buy for $75K already seems to be a lot of wasted time, money, and assumes risk.
If you want to make your own street legal funny cat get an R/T or 300S, they share the same platform and if you end up messing it up, a 2016 probably ran you less than $20K depending on condition. I can understand someone buying a Scatt and over time switching parts out but to spend $50K on a car then spend another $25K to make it a car that you could buy for $75K already seems to be a lot of wasted time, money, and assumes risk.
Exactly. You can't buy a 300 Hellcat, so modding is the only way, the route I took.
No reason to mod a Scat when you can get a Cat.
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3 Posts
I have 502 to the wheels and I have throttle body, an after market intake manifold, long tube headers, intake, custom grind cam, thermostat, hellcat oil pump , and a dyno tune total cost me 8,579
How long has it been?
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