ZR-1 Net Registry Forums - View Single Post - What thread is the fuel rail where the Schrader valve connects?

1991 Corvette ZR-1 · 07-28-2024

Nitrous Outlet has a schrader adapter block available which would allow you to use the existing shader to thread onto. From there, you can install a new schrader valve, as well as a sensor for fuel psi monitoring. Originally developed for LT1 and LT4 engines I believe, but it can work on LT5s as well.You will need a core removal tool to remove valve inside the shader.

https://nitrousoutlet.com/products/n...SABEgLECvD_BwE

Edit: it should be a 4AN fitting. A 9/16 wrench should fit the fitting that threads onto the schrader.

07-28-2024	#3
1991 Corvette ZR-1 Join Date: Sep 2018 Location: Florida Posts: 306	Re: What thread is the fuel rail where the Schrader valve connects? Nitrous Outlet has a schrader adapter block available which would allow you to use the existing shader to thread onto. From there, you can install a new schrader valve, as well as a sensor for fuel psi monitoring. Originally developed for LT1 and LT4 engines I believe, but it can work on LT5s as well.You will need a core removal tool to remove valve inside the shader. https://nitrousoutlet.com/products/n...SABEgLECvD_BwE Edit: it should be a 4AN fitting. A 9/16 wrench should fit the fitting that threads onto the schrader. Last edited by 1991 Corvette ZR-1; 07-28-2024 at 09:58 AM.