I run Castrol 20w50 in my 440. I hav 60lbs at 900rpm but thats also dependent on your HV Oil Pump & how tight your clearances are. I used to run straight 50w in my other 440 because the clearances were a bit looser....


Family owned 1969 Charger R/T DualQuad 440/727/GVO/3.55s