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Joyridin · 02-22-2023, 06:27 PM

That listing shows 1997 - 2020 LS engines, but they changed the thermostat design in 2014 or so. Maybe they made the new ones universal? I had to mill open the diameter where the thermostat sits about .050" on the diameter to get the earlier version to work with the later thermostat.

02-22-2023, 06:27 PM	#3
Joyridin Registered User Join Date: Sep 2020 Location: Cleveland, Ohio Posts: 485	Re: LS3 water neck and radiator hose That listing shows 1997 - 2020 LS engines, but they changed the thermostat design in 2014 or so. Maybe they made the new ones universal? I had to mill open the diameter where the thermostat sits about .050" on the diameter to get the earlier version to work with the later thermostat.