RPM range for a 455 pontiac with a T-400 and 3.07 gears to turn 3200 RPM at 60 mph? This is with a 29" tall tire. This combination is in a 48 Chevy Sedan delivery.

A buddy of mine is having a dilemma about this. His Tranny guy is telling him that the RPM range is acceptable for the combination. But he really doesn't like turning the motor that high on the Interstate. He is also concerned about the cost (and reliability)of changing to a 700 R-4.


Thanks in advance for the help.

Chris