Mustang Owners Club Australia Forum

Generation 6 - S550 Discussion Area => Tech Torque Post 2015 => Topic started by: GLENN 70 on July 10, 2017, 09:41:54 am

Title: HP difference 5.0 s550
Post by: GLENN 70 on July 10, 2017, 09:41:54 am
Does anyone know  the real reason our 5.0 engine is rated at 306 kW / 410 HP and the U.S. Version is 435 HP . Some say it's one of the exhaust manifolds ,but to loose 25 HP ,I don't think so  :shrug: 2015-2017 mustang GT .
Title: Re: HP difference 5.0 s550
Post by: David C on July 10, 2017, 09:19:49 pm
Due to RHD layout the exhaust system is not as effective the originally designed LHD version.
Title: Re: HP difference 5.0 s550
Post by: GLENN 70 on July 10, 2017, 09:29:04 pm
Yes I thought it was something to do with the exhaust .
Title: Re: HP difference 5.0 s550
Post by: GTA302 on July 11, 2017, 05:34:18 pm
So if the AUS GT  was fitted with the US headers then it should make 435 hp at fly wheel ??
Title: Re: HP difference 5.0 s550
Post by: David C on July 12, 2017, 01:30:41 am
So if the AUS GT  was fitted with the US headers then it should make 435 hp at fly wheel ??

If it was that simple Ford would have build the RHD version that way. I'm sure there are other issues.
It's easy to get an extra 40 HP out of the GT, ($6000-$7000)
Title: Re: HP difference 5.0 s550
Post by: GLENN 70 on July 12, 2017, 08:39:08 am
David are you saying $6,000 -$7,000 for an extra 40 HP ,if so they can stick that  :grin:   One more reason to leave mine stock .   Also it will be interesting next Sunday at all Ford day (QLD) when I give mine a run down the 1/4 mile at Willowbank drag track .   Full street trim with no traction  :burnout: .
Title: Re: HP difference 5.0 s550
Post by: David C on July 12, 2017, 11:04:13 am
David are you saying $6,000 -$7,000 for an extra 40 HP ,if so they can stick that  :grin:   One more reason to leave mine stock .   Also it will be interesting next Sunday at all Ford day (QLD) when I give mine a run down the 1/4 mile at Willowbank drag track .   Full street trim with no traction  :burnout: .

That includes a full drivetrain warrantee and tone adjustable exhaust plus lowering the car by 1.5", (as the new car warrantee would be effected by the mods).