Had 3.33 gears made for my 39 Chevy Truck about 5 years ago. The original was 4.11. Whata difference. I can cruise at 55-60 without the 216 engine screaming. Top end before was 40-45. As long as the suspension, brakes, steering, etc. are in great shape drive it. The only major differences I've noticed are low-end torque, and because I don't have a sychronized 1 gear, downshifting to 2nd gear and going around a corner will sometimes make the engine lug.