2017 ZL1 - Need Verification on SC Bypass Valve Hose Routing (Pic Attached)

Chris Larsson · 01-19-2026, 12:00 AM

Hey guys,

I’m double-checking the supercharger bypass valve connections on my 2017 Camaro ZL1 to ensure everything is in the correct "mode". I want to verify if my current hose routing is set up for the standard factory solenoid-controlled operation or if it has been modified to a vacuum-only setup.

I’ve attached a photo of the bypass valve and solenoid area below. Could someone with a stock or properly modded setup take a look and let me know if these connections look correct?

I noticed that the valve doesn't move (I think stays closed) when the engine starts.

Specifically, I’m looking to confirm:
Is the lower port correctly connected to the solenoid?
Is the upper port seeing the right vacuum/boost source?
Does this look like the factory configuration or has a "bypass mod" been performed?

Thanks in advance for the help!

ZLRob · 01-19-2026, 12:47 AM

That looks correct for the 2017 ZL1. You're good to go unless you are trying to bypass the solenoid Itself.

Chris Larsson · 01-19-2026, 01:06 AM

I got confused because many LT4s didn't look like mine. See the attached pictures for 3 cars with the same config. (not like mine though).

01-19-2026, 12:00 AM	#1
Chris Larsson Drives: Camaro 2017 ZL1 Join Date: Nov 2025 Location: Lima Posts: 12	2017 ZL1 - Need Verification on SC Bypass Valve Hose Routing (Pic Attached) Hey guys, I’m double-checking the supercharger bypass valve connections on my 2017 Camaro ZL1 to ensure everything is in the correct "mode". I want to verify if my current hose routing is set up for the standard factory solenoid-controlled operation or if it has been modified to a vacuum-only setup. I’ve attached a photo of the bypass valve and solenoid area below. Could someone with a stock or properly modded setup take a look and let me know if these connections look correct? I noticed that the valve doesn't move (I think stays closed) when the engine starts. Specifically, I’m looking to confirm: Is the lower port correctly connected to the solenoid? Is the upper port seeing the right vacuum/boost source? Does this look like the factory configuration or has a "bypass mod" been performed? Thanks in advance for the help! Attached Images

01-19-2026, 12:47 AM	#2
ZLRob Super Stock Drives: Chevrolet Camaro ZL1 Join Date: May 2022 Location: Concordia Posts: 1,004	That looks correct for the 2017 ZL1. You're good to go unless you are trying to bypass the solenoid Itself. __________________ 2017 Red Hot ZL1 A10 - Apex ARC-8's, 305/ 325 PS4's, DSX 9.06 12% lower, Griptec OE upper, NGK HR7 Ruthenium plugs, Nostrum 25+ injectors, XDI Goliath HPFP, Katech dual in tank LPFP, Katech oil pump, LME tensioner, DOD delete, LT1 big fuel cam, Jokerz ported blower, MPI lid, GMS hood extractor bracket, Granatelli SS plug wires, Cordes LTR reservoir, DMS T-stat housing, 186* LS3 T-stat, Borla X pipe, Black Widow Angry Housewife/ Corsa NPP mufflers, BMR engine mounts, Banks iDash, Lithium Battery, AEM X- Series, HP Tuners, E85, 16.5 psi 758 HP/ 804 TQ

01-19-2026, 01:06 AM	#3
Chris Larsson Drives: Camaro 2017 ZL1 Join Date: Nov 2025 Location: Lima Posts: 12	I got confused because many LT4s didn't look like mine. See the attached pictures for 3 cars with the same config. (not like mine though). Attached Images

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