Well its the volume vs pressure question From what I am hearing 5.3 with dod the pump has enough volume for my SC, researching different years before dod and after, will wait for your finding.
Edit
GM tech checking the difference
I did get ceramic coating on my headers but also bought exhaust heat wrap, thinking about wrapping Y pipe specially at the point where it crosses transmission pan.
Some more goodies showed up while I was gone
AC Delco professional water pump, also have 160 degree thermostat.
Heat sleeve for plugs, not sure if I am going to use it, will see when installing
Engine cooler lines, Transmission ones have been changed 2 weeks ago, and the Y connection...
Heads were coming off anyway for new lifters and trays, all new gaskets and bolts, actually have two sets of gaskets one from BTR and I bought AC Delco.
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