#Wheel pattern 67 thunderbird how to#
#Wheel pattern 67 thunderbird full size#

There are three possible combinations, small ID-small OD, large ID-small OD, and large ID-large OD. There are two carrier bearing inside bore sizes, and two carrier bearing outside bore sizes. The other part of the conversion is the carrier bearing size. To change the third member to 31 spline, the only parts needed are the differential side gears, they are available from Ford, about $20 apiece. If you shorten the axles more than 4 inches they are big enough to take 31 spline. For 28 spline units the last 4 inchs were machined down for the 28 spline ends. Note:After 1970 all axles were the 31 spline style big axles. * Denotes a gray area involving some of the earlier parts being found on 70 Model year cars.

#Wheel pattern 67 thunderbird full size#

Width: from axle flange to axle flange (X) Width: from alxe tube to axle tube (Y)ġ972-79 Ford intermediate & Full Size - 63'ħ3-86 F-150 Pickup/78-86 Bronco - 65-65 1/4'Ħ7-70 Mustang/Cougar/Fairlane/Comet/Falcon - 59 1/4'*Ħ9-77 Galaxie/Lincoln - information not given but in any case it will need to be narrowed for use in a street rod.ħ3-86 F-150 pickup/78-86 Bronco - 58 3/4'Ħ7-70 Mustang/Cougar/Fairlane/Comet/Falcon - 52-54' The 69-77 Galaxie/Lincoln and 73-86 half-ton pickup used both size axles and the 31 spline version should be considered the strongest available and can be used for extreme duty applications. The 70-79 Ranchero/Torino are considered a high performance unit again being produced with both 28 and 31 spline axles. The 57-68 early passenger car and half-ton pickup rear end is considered a medium duty unit and came in both 28 and 31 spline axles. The 67-73 Mustang type is considered light duty uses both axles. They range from light duty to extreme duty but in all cases the larger 31 spline axle versions are stronger than the 28 spline version of the same unit. Strength - There are four usable styles you can find in a junk yard. Two large holes and counter-sunk center = 31 splines.ĥ7 - no dimples, flat center band up the center of the rear cover, bottom drain plug.ĥ8-59 - two dimples on back of housing, flat center band, some had drain holes.Ħ0-67 - two dimples, flat center band, oil level hole in back cover.Ħ3-77 Lincoln, LTD, Thunderbirds had 9.375 inch centers, housings were cut away at the gasket surface for ring gear clearance, one curved rib at the front top portion of differential, strong but no aftermarket gear sets.

#Wheel pattern 67 thunderbird how to#

How To Recognize Nine Inch Housing Centersġ957 - no dimples, flat center band up the center of the rear cover, bottom drain plug.ġ958-1959 - two dimples on back of housing, flat center band, some had drain holes.ġ960-1967 - two dimples, flat center band, oil level hole in back cover.ġ963-1977 Lincoln, LTD, Thunderbirds had 9.375 inch centers, housings were cut away at the gasket surface for ring gear clearance, one curved rib at the front top portion of differential, strong but no gears.ġ972 and earlier 31 spline axles have the ability to be shortened.Ģ8 spline axles are tapered and cannot be shortened and re-splined.ġ973 and later cars have a 5-on-5 bolt circle and the axles cannot be shortened.ġ967-1973 Mustang axles can be identified by wheel flange: Ranchero/Torino - heavy duty thick wall housing, 3.25 inch diameter axle tubes with flat tops.ġ969-1977 Galaxies (coils), Lincolns (coils), and late pickups (leaf)- 3.25 inch diameter all the way to the backing plate, coil housings have upper control arm mount than you'll need.ġ967-1973 Mustang, Torino, Ranchero, Fairlane 59.25 inches toġ957-1959 Ranchero and station wagon 57.25 inchesġ967-1971 Comet, Cougar, Mustang, Fairlane 59.25 inchesġ966-1977 Bronco 58 inches 5-on-5 1/2 inch diameter bolt circleġ967-1973 Torinos, Rancheros, Fairlanes 59.25 inches orġ967-1971 Comets, Cougars, Fairlanes 59.25 inchesġ967-1973 medium and big block Mustangs and Cougars 1966-1971 Fairlanes, Torinos, Montegos, Comets, and other Ford intermediates with big blocks.ġ967-1973 Mustang/Cougar - light duty, thinnest housing material, small axle bearings, 28 and 31 splines.ġ957-1968 passenger car and 1/2 ton truck - medium duty, stronger than Mustang type, 28 and 31 splines.