OEM cam specs

zx9rmal · 05-28-2020, 08:57 AM

Anyone have the cam specs for the stock 6th Gen LT4 cam?

DemonZL1 · 05-28-2020, 09:41 AM

LT4 Cam Specs
Part Number 12642245
Duration @ .050 in. (int./exh.) 189°/223°
Valve Lift (int./exh.) 0.492 in./0.551 in.
Lobe Separation Angle 120°
Cam Gear Attachment 1-Bolt
Cam Gear Poles 4X
Active Fuel Management (AFM) Yes**
Variable Valve Timing (VVT) Yes
NOTE: **All versions used AFM with one exception — the Chevy Camaro ZL1 with manual transmission.

https://www.onallcylinders.com/2018/...ads-cam-specs/

zx9rmal · 05-28-2020, 01:33 PM

[QUOTE=CarbonZLE;10799258]LT4 Cam Specs
Part Number 12642245
Duration @ .050 in. (int./exh.) 189°/223°
Valve Lift (int./exh.) 0.492 in./0.551 in.
Lobe Separation Angle 120°
Cam Gear Attachment 1-Bolt
Cam Gear Poles 4X
Active Fuel Management (AFM) Yes**
Variable Valve Timing (VVT) Yes
NOTE: **All versions used AFM with one exception — the Chevy Camaro ZL1 with manual transmission.

Thanks. Very mild cam. I guess because of the forced induction?

crosive · 05-28-2020, 04:05 PM

Quote:

Originally Posted by CarbonZLE

NOTE: **All versions used AFM with one exception — the Chevy Camaro ZL1 with manual transmission.
\

no zl1's use afm, although the hardware is there

MilwPaul · 09-01-2025, 10:27 PM

"Very mild cam. I guess because of the forced induction?"

Don't forget that the ZL1 has a cam phaser / VVT to move the cam around which makes it act like a bigger cam.

05-28-2020, 08:57 AM	#1
zx9rmal Drives: '20 ZL1 M6 Join Date: Apr 2017 Location: FT. Lauderdale, FL Posts: 731	OEM cam specs Anyone have the cam specs for the stock 6th Gen LT4 cam? __________________ Mal Ft. Lauderdale, FL '20 Camaro ZL1 M6 '22 Kawasaki ZX-14R

05-28-2020, 09:41 AM	#2
DemonZL1 199 Drives: like a granny Join Date: Apr 2013 Location: Utah, USA Posts: 1,921	LT4 Cam Specs Part Number 12642245 Duration @ .050 in. (int./exh.) 189°/223° Valve Lift (int./exh.) 0.492 in./0.551 in. Lobe Separation Angle 120° Cam Gear Attachment 1-Bolt Cam Gear Poles 4X Active Fuel Management (AFM) Yes Variable Valve Timing (VVT) Yes NOTE: All versions used AFM with one exception — the Chevy Camaro ZL1 with manual transmission. https://www.onallcylinders.com/2018/...ads-cam-specs/ __________________ 2024 Silverado ZR2 LZ0 Duramax 2021 Shock SS 1LE A10 www.youtube.com/@demonworksmotorsports Anderson composites coupon code : Demon

05-28-2020, 01:33 PM	#3
zx9rmal Drives: '20 ZL1 M6 Join Date: Apr 2017 Location: FT. Lauderdale, FL Posts: 731	[QUOTE=CarbonZLE;10799258]LT4 Cam Specs Part Number 12642245 Duration @ .050 in. (int./exh.) 189°/223° Valve Lift (int./exh.) 0.492 in./0.551 in. Lobe Separation Angle 120° Cam Gear Attachment 1-Bolt Cam Gear Poles 4X Active Fuel Management (AFM) Yes Variable Valve Timing (VVT) Yes NOTE: All versions used AFM with one exception — the Chevy Camaro ZL1 with manual transmission. Thanks. Very mild cam. I guess because of the forced induction? __________________ Mal Ft. Lauderdale, FL '20 Camaro ZL1 M6 '22 Kawasaki ZX-14R

09-01-2025, 10:27 PM	#5
MilwPaul Drives: 2023 Camaro ZL1 Join Date: Jan 2024 Location: Milw. WI Posts: 5	"Very mild cam. I guess because of the forced induction?" Don't forget that the ZL1 has a cam phaser / VVT to move the cam around which makes it act like a bigger cam.

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