14 Bolt ID question

[Mr.Chevy4x4]

40.5 inch is the pad width from a 1 ton. 42.5 is the pad width from a 3/4 ton which is also the same for a 1/2 ton. To put a 1 ton 14 bolt under a 3/4 or half ton (blazer/suburban) you have to cut the spring pads off and move them out to the correct width.

The wms (wheel mounting surface width) varies depending on the application. I stole this from another thread:

GM Dana 60 front (single wheel) ...................69"
GM Dana 60 front (dual rear wheel) ................77" ; +4" on each side vs single wheel
GM 14 Bolt rear FF (single wheel) .................67"
GM 14 Bolt rear FF (dual wheel)....................63"
GM 14 Bolt rear SemiF (single wheel) ..............66"
GM Dana 44 Front (single wheel) ...................69" 8-lug; 67" 6-lug
GM 10 bolt front (single wheel) ...................69" 8-lug; 67" 6-lug
GM 14 Bolt rear (Van single wheel) ................70"
GM 12 and 10 bolt rear.............................64"
GM 14 bolt FF late model ....... depends on vehicle (truck, cube, drum, disc, ring gear)
GM 14 bolt SF late model ....... depends on vehicle (truck or van or SSR)


Mike