S550 Upside Down and on the Wrong Side Build Thread Profile - S550 Mustangs

[Bill Pemberton]

delete - double post

 

[GAR944]

So work has finally begun on the HP upgrade. First port of call was to get a baseline graph of how the car currently stands stock.
So the most amazing dyno run of a stock engine. WooHoo
307kW or 412Hp and 515nm or 380lbft at the wheels on some 305/30R19's
Pretty meaningless overall but at the end we can see where we lost and hopefully more where we gained.

 

[bnight]

So work has finally begun on the HP upgrade. First port of call was to get a baseline graph of how the car currently stands stock.
So the most amazing dyno run of a stock engine. WooHoo
307kW or 412Hp and 515nm or 380lbft at the wheels on some 305/30R19's
Pretty meaningless overall but at the end we can see where we lost and hopefully more where we gained.

This is about where my S550 sits in with the PP3 around 520 nm. So you should be great.

 

[Junkyard Dog]

Finally booked the car in to get the L&M intake cams installed with the Cobra Jet 2 manifold on top. New throttle body and intake tube.
Have a GT500 sump and pump and the guys suggested to do the pump gears in anticipation of the extended rpm range.
Then tuning. Craig from Mustang Motorsport who i showed getting delivery of his GTD will be handling the computer duties.
Fingers crossed it all goes smooth. Getting them to do a before dyno as well.

So L&M intake cams, leaving exhaust cams alone, and the Cobra Jet 2 intake manifold. A larger throttle body and different intake tube.

Intake camshaft specs. 231 deg @ 050" Intake, .551" Lift

Looks like a more complicated cam timing procedure than I would have guessed.

 

[biggsy]

Doesn’t the GT500 oil pan kit already have upgraded pump gears? I can’t imagine a need to change it out when it’s on a 700HP+ car

 

[steveespo]

Doesn’t the GT500 oil pan kit already have upgraded pump gears? I can’t imagine a need to change it out when it’s on a 700HP+ car

Some people like to upsell. If the tension and pulse loading of the blower on a GT500 at 7500 doesn't cause issues then a Cross plane N/A Coyote at 8500 won't either. I would be more concerned with the clearance of the aftermarket gear set than the quality of the OEM stuff.

 

[Junkyard Dog]

So work has finally begun on the HP upgrade. First port of call was to get a baseline graph of how the car currently stands stock.
So the most amazing dyno run of a stock engine. WooHoo
307kW or 412Hp and 515nm or 380lbft at the wheels on some 305/30R19's
Pretty meaningless overall but at the end we can see where we lost and hopefully more where we gained.
View attachment 111453

Very eager to see the results.

 

[GAR944]

Well it's apart and the cams are in. It's keeping company with a new Shelby being built beside it.

I'm claiming the next picture as mine, well part of the engine in the photo.


Its an RTR drift car. The GT500 cam covers are however mine. Of all the cars to be in their workshop, mine, with probably the only GT500 covers in the state or possibly country. The car was scheduled for a private track practice tomorrow and their GT500 covers hasn't arrived. They had smoke issues they were trying to cure, just not tyre ones. Sideways through the left right kink then two right handers before being thrown into a left hand sweeper should be the ultimate test for the covers baffling. Sure enough as they loaded it onto the truck tonight the covers turned up. So I get new ones and the guys didn't have to stay back to finish off a car. Happy to help out. Not the first time I've been notified parts of my car have been repurposed to keep a race car in an event.
It's what you do.

 

[Junkyard Dog]

The RTR car, um, where is the radiator?

 

[Junkyard Dog]

Sorry if I missed it, but why did you upgrade the intake camshafts to larger lobes but leave the exhaust camshafts as Ford designed them?

 

[biggsy]

Sorry if I missed it, but why did you upgrade the intake camshafts to larger lobes but leave the exhaust camshafts as Ford designed them?

I know it’s posted somewhere on this site but many years ago or over the years, it was concluded that there was no real benefit in do the exhaust cams on an NA set up. Most of the performance gained was from intake only. Several others who do the L&M cams only do intake only. Sorry I don’t have a technical answer.

If I’m not mistaken Shaun at AED had a hand in designing the cams.

 

[Fabman]

I know it’s posted somewhere on this site but many years ago or over the years, it was concluded that there was no real benefit in do the exhaust cams on an NA set up. Most of the performance gained was from intake only. Several others who do the L&M cams only do intake only. Sorry I don’t have a technical answer.

If I’m not mistaken Shaun at AED had a hand in designing the cams.

correct.

 

[GAR944]

Sorry if I missed it, but why did you upgrade the intake camshafts to larger lobes but leave the exhaust camshafts as Ford designed them?

Craig who will be tuning it said the same last night. He asked if there were exhaust cams and we told him just the intake. He nodded and said all the tuning gains were from playing with the intake anyway.
And it is somewhere here on the site that the exhaust flows fine but the engine will take as much air as it can get on the intake.

It was Steve, my memory was correct.

Cobra Jet out of the box with twin 69 mm VMP on my 2018 Gen 3. 1 7/8" ARH headers, JLT CJ CAI and full 3" exhaust.
The engine will use all the air you can give it. Di gives me the torque advantage as does the 12:1 compression over the 11:1 of the Gen 1 and 2 engines. Dyno used for ST2 compliance. Tune by Ken Osborne of OZ Tuning, 96 octane gasoline race mix. The magic is in the cam timing, car runs very cool and does not drop performance over a 30 minute session. The peak run was the last of 5 consecutive, each with a little tweak by Ken based on live logging.

 

[GAR944]

The RTR car, um, where is the radiator?

Mounted somewhere under that rear window where its a bit safer. Probably has other benefits that the drift guys know of.

 

[Junkyard Dog]

Craig who will be tuning it said the same last night. He asked if there were exhaust cams and we told him just the intake. He nodded and said all the tuning gains were from playing with the intake anyway.
And it is somewhere here on the site that the exhaust flows fine but the engine will take as much air as it can get on the intake.

It was Steve, my memory was correct.

Searched and found it. 478 horsepower to the wheels at only 6,548 rpm. Nice!

Suggest a manifold and throttle body combination

Time to start an argument. Nothing too serious i hope.The details are as follows.2017 GT stock engine effectively, nothing that affects performance. Stock manifold and throttle body Cold air intake but that can be modified to suit whats down stream.I'm finally looking to see what...

trackmustangsonline.com

 

[Junkyard Dog]

That must have been an earlier engine. In a later post with the Gen 3 short block, he said he hit 508 at the rear wheels in 2022.

Suggest a manifold and throttle body combination

I went with the PP3 (GT350, CAI+TB+IM) and I'm super happy with that choice. The car is running up to 7500 rpm and it's performing great. The only big issue is the GT350 open air box is sucking hot air from the engine bay so that gives very high IAT on the street and in traffic. So my suggestion...

trackmustangsonline.com

 

[GAR944]

It's Friday evening here and called past the workshop. Boys have been busy and it hasn't been easy.
We now have complete, well about 75% Aircon delete, as they had to move the radiator forward to clear the cold air intake. Well tilt the top forward. Weight loss program active, compressor, condensor gone and some lines removed and the rest plugged for the time being.
Will have to work out how to shroud the air cleaner from the engine bay. Didn't realise when i got the intake it was really for an earlier model. Oops. We can make it work.
They also had to pull my central bonnet louvers out. At least it will be easy to see where they need trimming to fit back in later.
Craig got a base tune into it and they will get it attached to the hub dyno tonight or tomorrow. He has to get another finished tonight and mine done before heading overseas. Fingers crossed this part goes easy on him.