[BlackbeastSS2]

Originally Posted by Nabush

I can upload my tune and logs if someone thinks he has an idea other than heads

I would just log and send the file over to Pray and pay him to look at it. Your original mods look a tad low, I was thinking the minimum your should have on a mustang is 440 with your mods. The increase in Hp on cam looks good but your torque obviously looks jacked up. Something in your tune just because of low torque.

I am speaking of experience thru my last build and finding the right tuner. Went thru 3 tuners and then graduated to logging & remote tuning. Don’t get stuck on Dyno numbers, it’s the time at the track that matters if your drag racing.

[oldman]

The cam he has is bigger than the biggest cam Cam Motion makes for a 6.2. A BTR Gen V 5.3 stage II cam is 206 / 212 on a 110 LSA. Ths engine is effectively only 5.6 liters. Unless the dynamic flow is constant, you have port / flow stagnation. This is a HUGE cam for stock heads and 5.6 liters. Last the cam he has should have peak HP at 7000 RPM, shift at 7400 RPM or so. He is running it to 6700 RPM, the cam is just wrong period, put it in cam doctor -10 duration in /ex would bring 35 ft -lbs in the midrange and may even make MORE HP at 6600 RPM where he lifts.

[BlackbeastSS2]

It will be like my last build. A nice cars and coffee build, dam your car sounds mean. That was me, sounded like mean as shit but the track times didn’t shine until I used nitrous. If you don’t change your cam maybe nitrous if u want to improve your times. Instant HP

[6spdhyperblue]

What do u mean only 5.6 liters?

[easttxss]

Originally Posted by 6spdhyperblue

What do u mean only 5.6 liters?

Go back and read his other posts. He is talking in theory due to the altitude that this engine lives.

[6spdhyperblue]

Oh nice. Thx

[KingLT1]

So is this cam not the VVT-3?

[oldman]

it is. It has 235 intake on the TSP cam is much bigger than the 229 +3 degree advance on the biggest 6.2l Cam Motion. The TSP ca, is a BIG cam, also toss in the TSP has a much faster lift (not good on stock head), not even that great on a ported head (as an aside).

I will note the biggest TSP cam for the 5.3 gen V is 225 intake duration and peak power is at 6400 RPM.

" Intake Closing AGAIN!: The most important cam event. This sets the engine's effective RPM range, effective dynamic compression. An early closing (30 - 38 ABDC) = high dynamic compression, great low to mid RPM torque for a very broad power band, requires lower static compression (which means less stress and strain on the engine, less risk of heat damage and detonation, more reliability)"

https://tmfcycles.com/blogs/tech-tips/cams-explained

[oldman]

Tick Performance Street Heat Stage 3 Camshaft for GenV LT Engines
233/239 | .646”/.635” | LSA114+2 | +32% Fuel Pump Lobe

Designed for: GenV LT Engines (as they're equipped with stock)
Basic Operating RPM Range: 2800-7200
Expected Horsepower Gains: 55-65RWHP over the stock camshaft in a well-optimized setup


Note what Tick is saying about their smaller cam (biggest one they sell), RPM 7200, if you are not going to rev the engine to 7200 RPM don't be looking for a 235 intake cam.

55 to 65 WHP on optimized setup. Conservative which is good.

[Nabush]

Guys,

I'm not the only one to live at 2700 FT and use a TSP Stage 3 camshaft...

I'm sure the issue is not tuning related. I tried everything on the road and dyno, in all directions.

Timing : tried 10 deg to 26-27 deg of timing in this area. Way less torque at 10deg compared to 27 deg (as expected) I did not try more though as 27 is already a lot on 91 even at medium rpms.

Fuel : Lambda WOT at 0.90 or 0.83 no changes

SOI (start of injection) : advanced or retarded by more than 20 degrees in the area where I have issues. Not a bit of a change

Torque management : predicted torque actual torque commanded torque all match. No torque management timing pulled off. I tried to massage the tables just to see no changes.

My MAF table is calibrated within 1% and my VE tables around 2% on most of the cells I was able to hit during the hours I spent datalogging with my wideband attached to HP tuners. Not sure many tuners spend half the time I spent fine tuning that.

Looking back at old posts I've seen TSP stage 3 cam curves in the past looking like mine : it was before the ported heads, in 2014.

Pretty positive my issue is coming from the stock heads.

Ps : I don't drag race. I'm a roadcourse and AutoX guy. The real driving skills.

[BlackbeastSS2]

Originally Posted by Nabush

Ps : I don't drag race. I'm a roadcourse and AutoX guy. The real driving skills.

I’m a Bi car racer when it comes to drag racing (where the thrills are) and road course. (Where u get dizzy around and around and around)

Altitude- move, turbos, supercharger, NOS. The only thing not to complain about altitude is that everyone else races at the same height so in reality it should not matter. On one hand you mode your car for your area and then go race at different location and you feel it. It’s either better or worse on the engine. Myself I am spoiled, Mission Raceway is 25 feet above sea level and 4200 length.

[KingLT1]

Originally Posted by Nabush

Guys,

I'm not the only one to live at 2700 FT and use a TSP Stage 3 camshaft...

I'm sure the issue is not tuning related. I tried everything on the road and dyno, in all directions.

Timing : tried 10 deg to 26-27 deg of timing in this area. Way less torque at 10deg compared to 27 deg (as expected) I did not try more though as 27 is already a lot on 91 even at medium rpms.

Fuel : Lambda WOT at 0.90 or 0.83 no changes

SOI (start of injection) : advanced or retarded by more than 20 degrees in the area where I have issues. Not a bit of a change

Torque management : predicted torque actual torque commanded torque all match. No torque management timing pulled off. I tried to massage the tables just to see no changes.

My MAF table is calibrated within 1% and my VE tables around 2% on most of the cells I was able to hit during the hours I spent datalogging with my wideband attached to HP tuners. Not sure many tuners spend half the time I spent fine tuning that.

Looking back at old posts I've seen TSP stage 3 cam curves in the past looking like mine : it was before the ported heads, in 2014.

Pretty positive my issue is coming from the stock heads.

Ps : I don't drag race. I'm a roadcourse and AutoX guy. The real driving skills.

I agree 2700ft isn't that high of altitude.

Have you changed the virtual torque tables?

I am sure ported heads with help but something still seems a miss buy how the power curve looks.

look at the power curve difference on this setup with the same cam but TSP cnc heads.

[Nabush]

Originally Posted by KingLT1

Have you changed the virtual torque tables?

Yup. No changes.

[Nabush]

Originally Posted by BlackbeastSS2

I’m a Bi car racer when it comes to drag racing (where the thrills are) and road course. (Where u get dizzy around and around and around)

Altitude- move, turbos, supercharger, NOS. The only thing not to complain about altitude is that everyone else races at the same height so in reality it should not matter. On one hand you mode your car for your area and then go race at different location and you feel it. It’s either better or worse on the engine. Myself I am spoiled, Mission Raceway is 25 feet above sea level and 4200 length.

Try AutoX. Really intense. No mistakes allowed. Need to be smooth and clean, tight and tidy.

Still prefer roadcourse, but AutoX is cheap and fun and really competitive.