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tarik1985 · 12-17-2023, 10:44 PM

Hey guys,
Thanks in advance for any advice you can offer.

Since I swapped my 2010 camaro ss l99 engine for a crate engine with the GM hot cam ([https://paceperformance.com/LS3-Crat...-19435100.html)) (the stock engine blew up). I've been experiencing some weird symptoms. At stop lights, the RPMs surge, especially with the AC or heat on. Worse, on the highway with the AC cranked, the car stumbles and almost stalls or chokes.

Iwas told the GM hot cam in the new engine, along with my bolt-on upgrades (LT headers, CAI, Borla ATAK cut-back exhaust), is overloading the stock torque converter and I should upgrade it as well.

So, here are my questions:

GM recommends a stall speed between 2400-2800 RPM. Is that enough, or should I go for a 3200-3400 RPM stall converter?

Should I upgrade the gear as well?

The car was tuned after the engine swap, but I don't know the original stall setting. Will I need a retune after upgrading the converter?

Thank you,

12-17-2023, 10:44 PM	#1
tarik1985 Drives: 2010 Camaro SS/RS Join Date: Jan 2014 Location: USA Posts: 283	Is the torque converter causing this issue? Hey guys, Thanks in advance for any advice you can offer. Since I swapped my 2010 camaro ss l99 engine for a crate engine with the GM hot cam ([https://paceperformance.com/LS3-Crat...-19435100.html)) (the stock engine blew up). I've been experiencing some weird symptoms. At stop lights, the RPMs surge, especially with the AC or heat on. Worse, on the highway with the AC cranked, the car stumbles and almost stalls or chokes. Iwas told the GM hot cam in the new engine, along with my bolt-on upgrades (LT headers, CAI, Borla ATAK cut-back exhaust), is overloading the stock torque converter and I should upgrade it as well. So, here are my questions: GM recommends a stall speed between 2400-2800 RPM. Is that enough, or should I go for a 3200-3400 RPM stall converter? Should I upgrade the gear as well? The car was tuned after the engine swap, but I don't know the original stall setting. Will I need a retune after upgrading the converter? Thank you, __________________ 2010 Camaro SS/RS L99.