SBP DISC to LBP DISC SWAP- 72 Swinger
Thanks for the info. I feel better now as I just spent $140 for the set up (little more costly in Calif) and this will be my 16 yo daughters car. I was invisioning her boucing off the road like they used to say all Corvairs did. That was a hoax as well. I will proceed with
the install.
Uh, I'm in California too, so, sorry about that. Someone made some money off you. :banghead:
Need some more help. I got the '85 Diplomat discs to put on my '72 front drum Scamp. I now see that the knuckle on the '85 set up has bolts through the spindle that thread into the knuckle. The '74 knuckles have smooth holes. Do I just get longer bolts and have the nuts against the knuckles? The '85 bolts have extremely flat heads, I assume to clear the discs. If I get longer standard head bolts will they hit the discs? What have you guys done to fix this? I wouldn't want to modify new bolt heads and have them fail.
Stephen Shaw
Yes, you'll need longer bolts as the FMJ ones won't be long enough. Someone solved this issue already on here, I'll try and find the thread.
**EDIT**
Ok, so I found one thread where a member stated they just used grade 8 bolts and nuts. No mention of any grinding.
I would just buy a set of grade 8's and mount them up. Check the clearance between the head of the bolt and the rotor. Doesn't have to be much, just enough to allow for a little play in the wheel bearings or a little rotor warping down the road. I'd want a little extra just so if the wheel bearings wore out there wouldn't be any chance of the bolts hitting the rotors. But you're still not talking about a ton of space, a 1/16" would be plenty. Anyway, if there isn't a ton of clearance, I'd just grind the heads of the bolts to fit. As long as you don't get the bolt red hot, it won't effect the strength of the bolt. And I don't think you'll need to make them as thin as the originals either, so it shouldn't be a huge issue.
You can also use the stock bolts from a '73-'76 A body spindle, they're long enough and work fine, if you can find a set.
