In Reply to: Pie weights posted by Jim on April 06, 2025 at 15:06:58:
A 3400 is a "Utility" derivative of a 3000. The 8 on 6" rear lug pattern is the same as all the small Fords going way back to the 8Ns so any rear wheel in that time frame will interchange.
However, though 13.6x28 tires were optional, 'standard' rear tire size on a 3400 was 16.9x24 with 6 loop rims. And most of those used a CAST steel center and not a stamped steel center like the ag models we are more familiar with. And - because the cast centers are thicker than the stamped centers they require a special "top hat" style of lug nut and NO type of pie weight can be used.
We would need to know what size rear rims/tires your 3400 has and what type of center it has (cast vs stamped) in order to give better advice whether pie weights can be used on your tractor.