I have a 1994 4wd ranger and I was wondering how tall of a suspension lift will I need to get 33s under the truck.

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1994 Ford Ranger Splash 4.0 4X4

4 inch suspension should be fine

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1997 Ford Ranger 3.0 Xlt 5spd
2.5 inch leveling kit, 31x10.50R15 Mudstar tires, upgraded sound system, interior LEDs, LED light bar, camoflauge headliner.

It is what it is.

mine has a 4 inch lift. If you get wide 33's like 12.50's eventually you will have to put spacers on front bumper. 1/4 inch- 1/2 inch. Because eventually springs sag, and will slightly rub, if you hit a hard enough bump.