Milodon Main Studs

PREMIUM MAIN STUDS

Main Studs

  • Studs are required where maximum loading & reduced wear and tear on the block threads are desired.

  • Aircraft quality 8740 chrome moly steel is used to produce premium grade, 
    race quality fasteners right in Milodon's own plant.

  • Ground and thread rolled after heat treat to assure exacting tolerances.

  • 190,000 PSI tensile strength is equal to the most demanding of applications.

  • Kits include 4130 heat treated, parallel ground washers and high strength nuts.

  • The Milodon name is your assurance of quality and a part warranted 100% unbreakable.

  • Sold in complete sets.

- MAIN STUDS -

  Factory   2 Bolt Caps   Factory   4 Bolt Caps Milodon Angle  Bolt Caps Milodon Straight Bolt Caps
SMALL BLOCK CHEVY
SB Chevy  81125  81115  81128  81130 
SB Chevy with Windage Tray 81126  81117  81129  81131 
BIG BLOCK CHEVY
BB Chevy 81138  81135  81133  81140 
BB Chevy with Windage Tray 81139  81137  81134  81141 
FORD
302 81155  - - 81155 
 302 with Windage Tray 81156  - - 81156 
351W 81165  - 81175  -
351W with Windage Tray 81166  - 81164  -
351C - 351M - 400 81165  - 81169  -
351C - 351M- 400 with Windage Tray 81168  - 81170  -
390 - 427 - 428CJ 81175  - - -
429 - 460 81188  - 81188  -
429 - 460 with Windage Tray 81189  - 81189  -
CHRYSLER
318 - 340 - 360 81185  - 81183  -
318 - 340 - 360 with Windage Tray 81186  - 81184  -
383 - 440 Wedge 81185 - - 81183 
331 - 354 - 392 Early Hemi 81185  - 81183  -
426 Factory Hemi (Center Studs) 81205  - - -
OLDS
400 -425 - 455, 350 Diesel 81215  - 81175  -
400 - 425 - 455, 350 with Windage Tray 81217  - - -
307 - 350 - 403 81216  - - -
307 - 350 - 403 with Windage Tray 81218  - - -
PONTIAC
389 - 400 - 455 81221  - - 81222 
389 - 400 - 455 with Windage Tray 81223  - - 81224 
389 - 400 - 455 (Center Studs) - 81222  - 81222 
389 - 400 - 455 (Center Studs) with Tray - 81224  - 81224 
AMC
290 - 304 - 343 - 360 - 390 - 401 V-8 81187  - - -
CADILLAC
472-50 81229  - - -
AUSTRALIAN HOLDEN
253 - 308 V-8 81145  - 81145  -
253 - 308 V-8  with Windage Tray 81146  - 81146  -
6 Cylinder Main Studs 81147  - - -
 

SUGGESTED TORQUE SPECIFICATIONS:
Always clean up block threads with a bottom tap before installing studs. Install head studs with non-hardening thread sealer and use Locite on mains. All nuts are torqued using oil as lubricant. Lightly seat studs into block at 10 ft./lbs. Then torque nuts as follows

  • 7/16" diameter stud 
    @ 65 ft./lbs.

  • 1/2" diameter stud 
    @ 85 ft./lbs.

  • 9/16" diameter stud 
    @ 115 ft./lbs.
 
ENGINE STUD,  4 PACKS
Genuine 190,000 PSI premium race quality, 8740 chrome moly engine studs are available in these handy 4 packs to replace either lost or damaged studs. These also provide studs for special applications for which there are no kits available. 
2 3/4" x 7/16" 81250  4" x 7/16" 81254 
3" x 7/16" 81251  4 1/4" x 7/16" 81255 
3 1/4" x 7/16" 81252  4 1/2" x 7/16" 81256 
3 3/4" x 7/16" 81253  4 3/4" x 7/16" 81257 
5" x 7/16" 81258  4" x 1/2" 81275 
5 1/4" x 7/16" 81259  4 3/8" x 1/2" 81276 
6 1/8" x 7/16" 81260  4 5/8" x 1/2" 81277 
6 1/2" x 7/16" 81261  4 3/4" x 1/2" 81278 
6.9" x 7/16" 81262  5" x 1/2" 81279 
7 1/4" x 7/16" 81263  5 3/8" x 1/2" 81280 
2 3/4" x 1/2" 81270  6 1/4" x 1/2" 81281 
3" x 1/2" 81271  6 1/2" x 1/2" 81282 
3 1/4" x 1/2" 81272  7 1/4" x 1/2" 81283 
3 5/8" x 1/2" 81273  8" x 1/2" 81284 
3.8" x 1/2" 81274  8 1/2" x 1/2" 81285