What Trans Do You Have & Why ?

[ACHiPo]

I have an older 3550 TKO and it's just ok. Shifting is a bit mushy with occasional missed 3rd/5th shifts. With the 3.73 rear, the 0.68 OD is too tall for the motor (a bored/stroked 351 418 CI with a Victor Junior intake), as the motor wants >2000 RPM to cruise, which is ~75 mph in 5th.

My new car will have a TKO 600 Road Race with a 0.82 5th and 3.31 rear which should give me right at 2k RPM at 65, which I think will be perfect for the 482 with mild cam and dual-plane intake (loads of low-end torque).

[jhv48]

I had a TKO 600 with the .64 overdrive. Hated it. Shifted like a truck and the rpm drop between fourth and fifth made fifth only suitable for high speed (80 mph +) cruising. Can't tell you how many times I missed third gear trying to speed shift from second.
Dumped it and bought one of Levy's super alloy T-5 trannys with a .80 fifth gear. What a difference. Shifts smooth as a normal T-5, easily handles 500+ horsepower, never miss third gear and now I have a useable fifth gear. With my 3.46 rear end and streetable engine, I should have bought this one first.