Pump comes with a yellow, orange (installed), and green spring.
Instructions say "This pump is supplied with a high pressure relief spring"
Does that mean, orange is stock PSI, yellow is to lower 8-10psi and the green is to increase 8-10psi over stock?
Does anyone have and PSI numbers running this pump with either spring orange or green?
Haven't seen a lot of published information.
Also, let me know if you are running DOD or VVT or neither..

 

I don’t remember about the spring psi but from what o remember the spring that’s installed in the pump is what’s stock spec .
I have the 10355 in my denali and has vvt not dod . Running 25psi at reg temp idle and ramps up to highest I’ve seen is 65 psi. I went into an ordeal with these pumps , originally with my cam install , I installed the 10296 which what was sold to me in the package , after the install my oil pressure was really slow when climbing psi and at hot idle I was seeing only 20psi .. called melling and asked what was the right oil pump and it was the 10355 that went Into my 08 Sierra Denali . Hope this helps