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I ran across this chart comparing pumps and went with the GM 12612289 (aka LS4?). It sells for about $80 and does a great job on mine. Startup I see 60psi, and drops in the 30's at idle after it's warmed up. This is on a forged motor with an oil cooler.
I ran across this chart comparing pumps and went with the GM 12612289 (aka LS4?). It sells for about $80 and does a great job on mine. Startup I see 60psi, and drops in the 30's at idle after it's warmed up. This is on a forged motor with an oil cooler.