How much power can a stock 2017 drivetrain handle?

[SVO MkII]

Recently picked up a very low miles 2017 GT Convertible automatic (non-PP). At some point, I'd like to install a blower kit. The car is just a street car that will never see a drag strip or any other kind of track. 650 crank HP is plenty for my needs. Can a stock drivetrain handle that? I've read stories about the aluminum diff housings breaking, as well as half shafts, on normally aspirated cars. Do these need to be upgraded? Is the 6 spd auto up to this for street use, or would it need mods as well?

I realize the answers are probably somewhere on this forum, but man, this is a massive topic! Thanks.

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[SolarFlare]

At high 500whp you are unlikely to encounter any issue right away. It will basically become a waiting game until fatigue failures set in, but that really depends on use/abuse. Doubt you will have a problem with axles or diff so dont put a dime into it. Save the money to, at some point, do clutches/intermediate shaft on trans if that time comes.

 

[bluebeastsrt]

At high 500whp you are unlikely to encounter any issue right away. It will basically become a waiting game until fatigue failures set in, but that really depends on use/abuse. Doubt you will have a problem with axles or diff so dont put a dime into it. Save the money to, at some point, do clutches/intermediate shaft on trans if that time comes.

What he said. Transmission will go first.

 

[jweggy]

What he said. Transmission will go first.

Do you think a manual would be more resilient?

 

[fuelforfire87]

Do you think a manual would be more resilient?

You're joking right, lol. The auto is made in the US and is the same trans in the F-150. The MT82 is made in china. The stock 6r80 can handle 600-650 HP for a long time.

 

[WildHorse]

The MT82 is made in china.

Jesus here we go again. You talking 11-17 Getrag or 18+ Magna PT ?
Meh, don't matter Getrag Ford Transmissions are headquartered (& manufactured) in Cologne France.

 

[WildHorse]

OP. PLenty of MT82 living a happy life at 600 wheel.

 

[jweggy]

You're joking right, lol. The auto is made in the US and is the same trans in the F-150. The MT82 is made in china. The stock 6r80 can handle 600-650 HP for a long time.

Sorry, Not trying to start troubles just wanted to understand the tolerances of auto vs. manual.

 

[jweggy]

OP. PLenty of MT82 living a happy life at 600 wheel.

Thanks for the feedback

 

[WildHorse]

Thanks for the feedback

No problem. With the 6R80 its always advisable to at least upgrade the clutches & steels at anything over 650 wheel. Same with the 10r80.

 

[Basspro302]

You might break an axle but depends on how you drive it. You should be ok. 6r80 should handle that no problem.

 

[SolarFlare]

Driving both responsibly it’s tough to say which one would go first. One would think the clutch will be the first to go depending on driver. But doing 6-2 downshifts to merge onto a highway also not good for a 6r80. So in either case set aside some bread in case trans goes.

 

[bluebeastsrt]

Do you think a manual would be more resilient?

No once you cross a certain power level things break. I had a 400whp SRT-4 that ate clutches for breakfast. And Broke the intermediate shaft. My supercharged 15 transmission gave up the ghost after quite a few 1/4 mile passes. Intermediate shaft snapped and clutches were toast. If you baby the car. either transmission will last. If you actually enjoy the added power. Neither will last.

 

[Jackson1320]

On the street never seeing the track the 6r80 will last you a long time. the stock axles should not be a problem until you get some sticky tires and even then i would not worry because it is a auto it’s easier on the axles. if you want you can put GT350 axles in and they will hold up just fine at that power level on the street and they’re very cheap. I would bet the aluminum diff will start howling and need bearings before anything else

 

[andrewtac]

I would bet the aluminum diff will start howling and need bearings before anything else

Mine howls, new bearings didn't fix it. Would an iron one not howl?

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