What HP and TQ Numbers Would You Expect?

[Gonzo]

From a stock 2024 CT5-V Blackwing that dynod:

Max Power = 620.58 at Engine RPM = 6.16
Max Torque = 639.40 at Engine RPM = 3.49

What would you expect to see after installation and services with the below modifications?

• Kong Xport Service
• Super Charger Gasket Kit
• 2.3" Pulley
• Gates Green Belt
• 103mm Nick Williams Throttle Body
• DSX Flex Fuel Sensor
• DSX Fuel Pipe Adapter
• Aeroforce Gauge And Pod
• NGK Spark Plugs
• GPI Spark Plugs Wires
• DEI Spark Plug Boots
• LMP Cold Air Intake
• LMP Catch Can & BMRS Lines
• LMP Heat Exchanger
• LMP Coolant Tank
• Kooks Headers (Ceramic Satin Silber Coated) With Cats & Mid Pipes
• HP Tuners MPVI Interface
• HP Tuners Credits
• Dyno Tune Vehicle

 

[Ty88]

Those are great base numbers. Further information, I think, that GM underrates this car.

 

[jvp]

I think, that GM underrates this car.

They do not. All LT4s are tested to meet the SAE spec of 668HP/659lb-ft +/- a couple of percent.

Never, ever, EVER use chassis dynos to try and figure out what your engine is making at the flywheel, because none of them are correct insofar as that. They're fantastic at seeing the difference modifications make.

 

[alloy00]

Maybe 800 whp on 93 and 825 whp on E?

 

[Gonzo]

They do not. All LT4s are tested to meet the SAE spec of 668HP/659lb-ft +/- a couple of percent.

Never, ever, EVER use chassis dynos to try and figure out what your engine is making at the flywheel, because none of them are correct insofar as that. They're fantastic at seeing the difference modifications make.

Yup, that’s why I was looking for what folks would think I could make from what my baseline is as the intent is to use the same dyno after the mods are complete.

None of what I’m looking for is what I’m making at the flywheel….only RWHP.

 

[Gonzo]

Maybe 800 whp on 93 and 825 whp on E?

That would be great for both.

Trying to keep just below power that would require adding another fuel pump, clutch, trans work etc.

 

[jvp]

Trying to keep just below power that would require adding another fuel pump, clutch, trans work etc.

From your previous post: good, glad to hear you have expectations set properly. I was more responding to the person who thought they're overrated.

Now for this comment: watch the clutch. Yes, we've seem some monstrous 5BW modifications over the last few years, but the clutch is apparently rated at exactly the torque output of the engine: 659. I find that a bit sus that GM wouldn't engineer a little safety slop in it. But that's what would probably let go on you, and naturally at the worst possible moment.