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I once had a 78 Camaro 305, TH350 with 1200-stall, 2.41:1 axle. All stock. First mod was a 3.08:1 axle, second was a tach, third was a B&M TorkMaster 2000 torque converter.
With the stock converter, cruising on the interstate, lifting off the gas resulted in the RPM dropping by 200 RPM. The launch from a dead stop flashed the converter to 1200.
After the converter swap, launch inproved to 1700, and felt better. But the interesting part was when cruising, lifting off dropped the revs by only 50. So the thing was more efficient.
A better launch with more mpg, it paid for itself at some point, while making the car more fun to drive and easier to live with.
Gearing to cruise at stall RPM is good, and use an ATF cooler, but consider a tighter converter also. Any of the big names can tighten up any stock converter, no matter who made it. Its all the same. Put it on a lathe, cut the factory weld holding the 2 halves together, open it up, clean it, tweak the fin angles, clean it again, weld it back together, re-balance it, paint it, ship it back to the customer.
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