Mark VIII LCA Bolts

[Stanley]

As I've learned, for the best fit of Mark VIII arms on a Bird or Cougar, you need not just the Mark VIII arms but at least some of the various bolts that came with it. I'm trying to nail down what bolts you should have from the Mark VIII, vs what you can re-use from the Bird arm mounts.

Here's supposedly a picture of all relevant Mark VIII bolts:



Rear Shock LCA Bolt and Nut: Need one per side. TBSC says "The Mark VIII bolt is shorter than the Thunderbird/Cougar shock bolt if you are swapping in Mark VIII LCAs". I found a picture from an SCCOA thread claiming the same thing: "The Mark 8 bolt is shorter with more threads ... I ran out of threads using the T-bird bolts."



Rear LCA to Knuckle Bolts: The surface area of both the stock Bird bolt head and nut are less than the Mark VIII bolts. You could make that up with washers, but the Bird bolts are ~10mm shorter already so losing threads is not the best idea.



So you need those two types for sure.

Can anyone who's done this swap tell me for certain which of the other Mark VIII LCA bolts I need to make this work properly?

 

[XR7-4.6]

You only NEED the LCA to knuckle bolts, all others can be reused from your car

 

[Stanley]

Perfect, thanks.

 

[Stanley]

Fresh question. I have the SCP perches for the arms as well. They sit in the arms well enough, but are they glued down in any way when you put it all together or what?

 

[XR7-4.6]

They don’t need to be, the spring tension will keep them in place

 

[Stanley]

Great, thanks.

Just to confirm, are these the Mark VIII rear shock LCA bolts?





That's what I was given when I ordered a pair, but they don't match anything in the image of the pile of bolts I posted in first post.

 

[XR7-4.6]

The shock bolts you can reuse from your stock iron arms, the only unique ones are the LCA to knuckle bolts

 

[Stanley]

I know that now, but I had already ordered them by the time I saw your earlier post so I figured that, if I have them and they're a bit easier to fit, I might as well use them. But I want to make sure that they're actually the right ones.

 

[Grog6]

They have a large pan head, with a large torx socket in the center.