Originally Posted by john858
i had a converter sent off and freshened,it was perfect,they sent it back 500 rpm looser than it was.i say yours just went the other way. synthetic is the only way to go imo.good luck
I did 3 passes with the convertor with the old motor before i installed the new motor..........it just a totally diffrent power curve on this motor not thier fault but i am not into pulling the tranny out to send the convertor in just to get it loosened up by 300 or 400 rpm i want to have some fun so i will try the syntethic oil to see if that help the car is still running pretty repectable for a sbc @ 3900 feet it ran 10.13 just the 60 foots are a little slow @ 1.41.......right air here and it will be in the nines