Anyone know the size of the control arm bolts?

[brrymnvette]

I need to get new bolts for my front lower control arms and all the rear control arm bolts. Anyone know the sizes, threads, grade?

 

[454mali]

they are metric, slightly under 1/2". I drilled them all out and have 1/2" grade 8 (still fits in the bushings with no mods)

 

[PONTIACMAN3]

Alot of companies use 12mm these seem to fit a little sloppy in control arms, 1/2 fits the best but yes as 454mali said you need to drill your frame, i was told 12mm is fine even though they seem to fit a little sloppy because they are torqued around 90 pounds