I am looking to compile a list of bolt sizes for everything and everything related to the IRS. Since I have my IRS down for powder and bushings I am replacing some of the bolts due to age. I am personally replacing certain bolt with 12 pt SS ARP hardware. I am hoping we can compile a full list here so it can be searchable later. Any one want to add to the list and I will update the first post.
Diff Cover Bolts: 5/16-18, 1.25", ARP Kit #612-1250 (2 packs)
Thanks to Rich'sTRsvt below and FTBR...
Subframe-to-rear bracket bolts - 12 x 1.75 x 110mm - 18mm - 76 ft-lbs
Subframe rear bracket-to-body bolts - 12 x 1.75 x 35mm - 15mm - 59 ft-lbs (ARP Kit #: 765-1003)
Subframe-to-body bolts 12mm bolts - 12 x 1.75 x 110mm - 18mm - 76 ft-lbs
Subframe-to-body bolts for replacement Grade 8 9/16" bolts - 9/16" x 4 1/2" - 13/16" - 145 ft-lbs
Subframe-to-body bolts for Ford 14mm replacement bolts - 4x2x110mm - 18mm - 131 ft-lbs
NOTE: OEM front 12mm subframe bolts need to be upgraded to 9/16" Grade 8 bolts with Grade 8 nyloc locking nuts.
Rear subframe bolts need an untheaded lead on them to guide the floating nut onto the thread to prevent cross-threading.
Driveshaft-to-pinion flange (Blue Loctite) - M12 x 1.75 x 30 12 point - 12mm - 83 ft-lbs (ARP Kit# 775-1002)
Halfshaft nuts (to rear hub) - 24 x 2 - 36mm - 240-250 ft-lbs
Lower control arm and bushing-to-subframe bolts - 16 x 2 x 120mm - 21mm - 184 ft-lbs
Lower control arm-to-knuckle - 12 x 1.75 x 90mm - 85 ft-lbs
Upper control arm and bushing-to-subframe - 12 x 1.75 x 70mm - 15mm - 66 ft-lbs
Upper control arm bushing-to-knuckle nut - 66 ft-lbs
Rear diff mount to diff housing bolts - 12 x 1.75 x 60mm - 15mm - 76 ft-lbs
Caliper bracket bolts - 12 x 1.75 x 34mm - 15mm - 76 ft-lbs
Rear caliper to caliper bracket bolts - 8 x 1.0 x 22mm - 12mm - 25 ft-lbs
Brake line to rear brake caliper bolt (Banjo bolt) - 10mm - 30 ft-lbs
Front diff housing to subframe - 12 x 1.75 x 95mm - 15mm - 59 ft-lbs
Rear diff support to subframe - 12 x 1.75 x 85mm - 18mm - 85 ft-lbs
Shock to lower arm and bushing bolt - 14 x 2 x 120mm - 21mm - 98 ft-lbs
Toe link-to-subframe - 10 x 1.5 x 80mm - 13mm - 35 ft-lbs
Toe link-to-knuckle nut - 10 x 1.5 x 80mm - 13mm - 35 ft-lbs
Wheel lug nuts - 21mm - 95 ft-lbs
Swaybar mount to subframe - 10 x 1.5 x 25mm - 13mm - 35 ft-lbs
ABS sensor to diff housing - 5/16"-18 x 1.125" - Torx head T-40 - 17 ft-lbs
OEM Rear diff cover to diff housing - 5/16"-18 x 1.250" - 1/2" - 25 ft-lbs (ARP Kit #: 612-1250)
Ford Racing Rear diff cover to diff housing - SHCS - 5/16"-18 x 1.500" - 1/4" Allen - 25 ft-lbs, (ARP Kit #612-1250, 2 packs)
Diff Cover Bolts: 5/16-18, 1.25", ARP Kit #612-1250 (2 packs)
Thanks to Rich'sTRsvt below and FTBR...
Subframe-to-rear bracket bolts - 12 x 1.75 x 110mm - 18mm - 76 ft-lbs
Subframe rear bracket-to-body bolts - 12 x 1.75 x 35mm - 15mm - 59 ft-lbs (ARP Kit #: 765-1003)
Subframe-to-body bolts 12mm bolts - 12 x 1.75 x 110mm - 18mm - 76 ft-lbs
Subframe-to-body bolts for replacement Grade 8 9/16" bolts - 9/16" x 4 1/2" - 13/16" - 145 ft-lbs
Subframe-to-body bolts for Ford 14mm replacement bolts - 4x2x110mm - 18mm - 131 ft-lbs
NOTE: OEM front 12mm subframe bolts need to be upgraded to 9/16" Grade 8 bolts with Grade 8 nyloc locking nuts.
Rear subframe bolts need an untheaded lead on them to guide the floating nut onto the thread to prevent cross-threading.
Driveshaft-to-pinion flange (Blue Loctite) - M12 x 1.75 x 30 12 point - 12mm - 83 ft-lbs (ARP Kit# 775-1002)
Halfshaft nuts (to rear hub) - 24 x 2 - 36mm - 240-250 ft-lbs
Lower control arm and bushing-to-subframe bolts - 16 x 2 x 120mm - 21mm - 184 ft-lbs
Lower control arm-to-knuckle - 12 x 1.75 x 90mm - 85 ft-lbs
Upper control arm and bushing-to-subframe - 12 x 1.75 x 70mm - 15mm - 66 ft-lbs
Upper control arm bushing-to-knuckle nut - 66 ft-lbs
Rear diff mount to diff housing bolts - 12 x 1.75 x 60mm - 15mm - 76 ft-lbs
Caliper bracket bolts - 12 x 1.75 x 34mm - 15mm - 76 ft-lbs
Rear caliper to caliper bracket bolts - 8 x 1.0 x 22mm - 12mm - 25 ft-lbs
Brake line to rear brake caliper bolt (Banjo bolt) - 10mm - 30 ft-lbs
Front diff housing to subframe - 12 x 1.75 x 95mm - 15mm - 59 ft-lbs
Rear diff support to subframe - 12 x 1.75 x 85mm - 18mm - 85 ft-lbs
Shock to lower arm and bushing bolt - 14 x 2 x 120mm - 21mm - 98 ft-lbs
Toe link-to-subframe - 10 x 1.5 x 80mm - 13mm - 35 ft-lbs
Toe link-to-knuckle nut - 10 x 1.5 x 80mm - 13mm - 35 ft-lbs
Wheel lug nuts - 21mm - 95 ft-lbs
Swaybar mount to subframe - 10 x 1.5 x 25mm - 13mm - 35 ft-lbs
ABS sensor to diff housing - 5/16"-18 x 1.125" - Torx head T-40 - 17 ft-lbs
OEM Rear diff cover to diff housing - 5/16"-18 x 1.250" - 1/2" - 25 ft-lbs (ARP Kit #: 612-1250)
Ford Racing Rear diff cover to diff housing - SHCS - 5/16"-18 x 1.500" - 1/4" Allen - 25 ft-lbs, (ARP Kit #612-1250, 2 packs)
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