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Hello,
On my 67 I recently replaced my oil pump with a high volume one. My old pump started to wear out I guess. My pressure never went above 25 psi. So I replaced it with a high volume oil pump. Here is some background...my old oil pump when it worked correctly gave me an oil pressure or 55 psi when cold and as the engine heated up it would drop to about 45 psi. Now with my high volume pump when it is cold it goes to 75 psi and when it gets hot it drops to about 40 psi. Is this right? Is there that much flucuation with a high volume pump? I have always used Valvoline 10W40. Now I was forced to use Castrol 10W40 because the store didn't carry Valvoline anymore. That is the only change other then then pump. Is it the oil? Possibly? Any info would greatly be appreciated.
Stang6767
Bryan
On my 67 I recently replaced my oil pump with a high volume one. My old pump started to wear out I guess. My pressure never went above 25 psi. So I replaced it with a high volume oil pump. Here is some background...my old oil pump when it worked correctly gave me an oil pressure or 55 psi when cold and as the engine heated up it would drop to about 45 psi. Now with my high volume pump when it is cold it goes to 75 psi and when it gets hot it drops to about 40 psi. Is this right? Is there that much flucuation with a high volume pump? I have always used Valvoline 10W40. Now I was forced to use Castrol 10W40 because the store didn't carry Valvoline anymore. That is the only change other then then pump. Is it the oil? Possibly? Any info would greatly be appreciated.
Stang6767
Bryan