Bolts for front suspension??

Re-installing the MII under the wifes '40 chevy p/u. Dont have all of the factory bolts - can I just subs***ute grade 8 hardware for what I am missing (specifically the rack mount bolts)? In addition I dont have a manual with torque specs, am I safe to use the "standard" torque specs used based on the bolts diameter?? Thanks-

 

Most "kits" are Grade 5 so a quality grade 8 is good.

Found a couple of sources;



Lower arm to crossmember- 95-110
upper arm to frame- 95-110
stabilizer bar to lower arm-15-18
ball joint to spindle(upper&lower) 75-90 (tighten to minimum and then tighten to nearest cotter pin slot)
strut to lower arm 40-60
stabilizer bar to frame 6-12
shock upper attachment 22-30
shock to lower arm 70-80
brake backing plate and cylinder ***y. to spindle 20-35
strut to frame 70-80
STEERING:

support yoke cover to housing 15-20
pinion cover to gear housing 15-20
steering gear to crossmember 80-100
connecting rod end to spindle arm 35-47(torque to 35 and go to nearest hole)

Hoop

 

Good info, thanks!

 

Grade #8 is generally ok so long as what you are clamping is strong enough to allow the bolt to be torqued without crushing something. One place where that is often a problem is the inner sleeves of rubber bushings.