2015 Challenger SRT Hellcat spec oil info released

[LFN]

2015 Dodge Challenger SRT Hellcat - Drivetrain/Specifications

Type and Description Supercharged 6.2L HEMI® V-8, 90-degree V-type, liquid-cooled

Displacement 370 cu. in. (6,166 cu.cm)

Bore x Stroke 4.09 x 3.58 (103.9 x 90.9)

Valve System Pushrod-operated overhead valves, 16 valves with hollow-stem, sodiumfilled exhaust valves, 16 conventional hydraulic lifters, all with roller tips

Fuel Injection Sequential, multiport, electronic, returnless

Construction Deep-skirt cast-iron block with cross-bolted main bearing caps, unique aluminum alloy heads with hemispherical combustion chambers

Compression Ratio 9.5:1

Power (estimated SAE net) 600+

Torque (estimated SAE net) TBD

Max. Engine Speed TBD

Fuel Requirement Premium 91 octane (R+M)/2 — recommended

Oil Capacity 7.5 qu. (7.1-liters)

Factory Oil Fill 0W-40 Pennzoil Ultra™ synthetic

Coolant Capacity 14 qt. (13.25 liter)

Intercooler System Separate low-temp cooling system with dual water-to-air intercoolers and a high-flow variable-speed electric water pump

Exhaust Type Dual 2.75-in straight-though exhaust system with twin Electronic Exhaust Valves (EEV) with rectangular Black Vapor-chromed tips

Transmission Six-speed manual Tremec TR-6060 with ZF-SACHS 258 MM Twin-disc Clutch

 

[A_Harman]

GM's supercharged 6.2L small block was making 638 HP in the Corvette ZR1. Chrysler better hit at least 670 HP to make it worth the trouble. Carrying the name "Hemi" requires that it be a cut above the rest.

 

[demarpaint]

Nice and still no DI from Chrysler.

 

[FetchFar]

And, when you go to the car insurance office and say "How much to insure my Hellcat?", with a name like that they will charge a million $ per year. ... they should have called it "The Responsible".

 

[LFN]

I was expecting 15w-50 or even 10w-60 grade for some reason.

 

[FetchFar]

Of course, this isn't really news since the Chrysler MS-12633 spec Pennzoil Ultra 0w-40 is already in new Vipers as factory fill. Its also running in Helio Castroneves's Indycar, which got 2nd this year at the 500. ... Yet, I have never been able to find out anything about whats in the Chrysler MS-12633 spec. ..... Anybody know?

 

[440Magnum]

Same as has been used for all the SRTs since the switch to SOPUS. It was M1 0w40 before that. Given that the 6.2 block and rotating assembly is heavily based on the 6.4, this is no surprise.

I haven't been using PU 0w40 in my 6.4after a rather non-spectacular VOA, and then finding out that it was the ONE PU grade that wasn't already using GTL base stock. :-/ Maybe I'll revisit it after they bring it out under the new Ultra Platinum label, if it proves to have the updated base stock.

 

[440Magnum]

'Hellcat' was originally an internal code- like 'Eagle' was code for the 2nd gen 5.7 Hemi (with variable valve timing,) 'Apache' was the code for the 6.4 Hemi, 'Corsair' for the original 4.7 SOHC, 'Pentastar' for the 3.6/3.2 V6 family, etc. 'Hellcat' and 'Pentastar' are the only two (that I know of) that became more official and used after the product went on the market. Even 'Pentastar' isn't as much a part of the brand/model identity the way they're using 'Hellcat.'

 

[KrisZ]

Such a disappointment, after so much hot air on here about thin oils I was expecting 0w20.

 

[FetchFar]

Originally Posted By: FetchFar
... Yet, I have never been able to find out anything about whats in the Chrysler MS-12633 spec. ..... Anybody know?


Agreed 440magnum, might as well use Walmart's 5-quart jug of Mobil1 0w-40 at FAR less cost than the Pennzoil Ultra 0w-40. Mobil1 0w-40 meets all the tough european specs, and a Nissan GT-R spec on top of that. Still I'd like to find out if the Chrysler MS-12633 is anything special.

One comment on 440Magnum's VOA comments: I don't think a VOA can really say much about an additive package's actual performance, since I remember seeing the famous German Castrol 0w-30 having only light amounts of additives in a VOA, yet its one of the finest products too.

 

[Shannow]

Originally Posted By: KrisZ
Such a disappointment, after so much hot air on here about thin oils I was expecting 0w20.

Maybe Chrysler are working on the (obviously flawed, as I've learned) model that if a customer is buying 600hp, they might actually want 600hp that they paid for to be available, as opposed to what they really might "need" on the day.

 

[DSparks]

I don't get why people keep trying to compare these pony cars (challengers, camaros, mustangs etc..) to a corvette...its like comparing apples to oranges...give me a break..

 

[Klutch9]

Originally Posted By: A_Harman
GM's supercharged 6.2L small block was making 638 HP in the Corvette ZR1. Chrysler better hit at least 670 HP to make it worth the trouble. Carrying the name "Hemi" requires that it be a cut above the rest.


They won't. It'll most certainly make less than 640 hp, since that's what the 87 year old engine in the flagship Viper makes. Which is a shame, since a performance forced induction engine should make well over 100 hp/liter.

 

[FetchFar]

Originally Posted By: DSparks
I don't get why people keep trying to compare these pony cars (challengers, camaros, mustangs etc..) to a corvette...its like comparing apples to oranges...give me a break..
... Yes, I know, obvious. Really ALL cars compared to other cars are apples-to-oranges. I have an '11 Camaro, and its more practical for every day use than a Corvette, better in the snow, etc. ... Every car is a compromise of fuel efficiency, handling, power, quietness, ride comfort. Think F1 racing compared to dirt track cars, both are good for what they do.

 

[demarpaint]

Originally Posted By: Shannow
Originally Posted By: KrisZ
Such a disappointment, after so much hot air on here about thin oils I was expecting 0w20.

Maybe Chrysler are working on the (obviously flawed, as I've learned) model that if a customer is buying 600hp, they might actually want 600hp that they paid for to be available, as opposed to what they really might "need" on the day.


I agree with the both of you. I don't think they're concerned with CAFE credits with that power plant either.

 

[artificialist]

Originally Posted By: Klutch9
Originally Posted By: A_Harman
GM's supercharged 6.2L small block was making 638 HP in the Corvette ZR1. Chrysler better hit at least 670 HP to make it worth the trouble. Carrying the name "Hemi" requires that it be a cut above the rest.


They won't. It'll most certainly make less than 640 hp, since that's what the 87 year old engine in the flagship Viper makes. Which is a shame, since a performance forced induction engine should make well over 100 hp/liter.


What really amazes me is how GM uses wedge heads, yet most of their V8 engines produce similar HP to Chrysler's hemi heads. Why spend the extra money to make a hemi head if a wedge head is just as good?

I'm surprised by the compression ratio. I'm not used to seeing 9.5:1 compression in supercharged engines without direct injection.

 

[aquariuscsm]

What?? They don`t spec 0W20?? Won`t the engine be destroyed by startup wear with that thick as molasses 40 weight??

 

[wemay]

I remember reading some articles where it was suggested this was a d.i. engine. None of which were Chrysler's official disclosures though.

 

[demarpaint]

Originally Posted By: wemay
I remember reading some articles where it was suggested this was a d.i. engine. None of which were Chrysler's official disclosures though.


I think the total shift to DI for Chrysler might come in model year 2016. They were holding off because of problems others were having with the technology according to an article I read.

 

[Shannow]

Originally Posted By: artificialist
What really amazes me is how GM uses wedge heads, yet most of their V8 engines produce similar HP to Chrysler's hemi heads. Why spend the extra money to make a hemi head if a wedge head is just as good?


Originally Posted By: artificialist
I'm surprised by the compression ratio. I'm not used to seeing 9.5:1 compression in supercharged engines without direct injection.


That's quite a skill, answering your own question in the same post :j/k:

Look at squish, quench, availability of chamber to flame propogation in 3 dimensions, distance from plug to remote end of chamber, and cylinder bore.