vjjack04

Guys,
As you know from my other posts, I have the C6 Z06/GS big disc brakes and calipers for the '67. And you folks who have them know they don't use the steel mounting brackets to hold the calipers. These bolt on directly. So, I am trying to figure out if the big bolts that mount the things (I believe they take a 21mm Socket) are really supposed to be torqued into the threads of those calipers at, what I have read from the C6 forum, 125lb ft....seems like a lot for the aluminum.....and, of course, should I use anti-seize....any good info will be appreciated. Thanks.

MelWff

wouldnt you have a better shot at an answer on the C6 forum where they would much more likely be dealing with your question.

vjjack04

One would think so. But, those guys don't seem as particularly detail oriented as my friends on this forum. Several have used these brakes, so was hoping they'd chime in.

jim lockwood

Are you positive the caliper mount bolts thread into the aluminum knuckle? That's strange.

On C4 suspension (which I know more about), the caliper bolt passes through an aluminum ear on the knuckle and threads into the iron caliper mount frame. And the torque you quote for the C6 caliper bolt is right on the money for C4 caliper bolt threaded into iron.

So, are you sure? You gotta picture?

blown454

If you look at the mounting bosses on the Z06/GS calipers, there are pressed in steel inserts that are threaded for the bolt to thread into. If you don't have them in your calipers they are missing. 129 lb ft is the correct torque spec for the mounting bolts.

vjjack04

Thanks much. That's what I was looking for. Makes more sense now. How about another question. Do you use anti seize on the brake pad pins? Believe they do go into the aluminum. And thanks again for your answer

vjjack04

Yep, they have the steel insert pressed in. The thing is, they were shiny like the aluminum so I even put a magnet on it to be sure. Thanks again for pointing this out, it now seems so obvious, but I really hadn't taken the time to inspect them well. I will be putting them on tomorrow.

vjjack04

Jim,
Yes, you can see from Blown454's picture and the one I added where the mounting point is. For these big brakes you don't use that C5/C6 mounting bracket...these mount directly to the spindle mount area.

jim lockwood

Got it! That's completely different from the C4 and C5 calipers with which I have experience.

vjjack04

here's how they look on the car.....

blown454

Those look great! I was going to use these calipers on mine but when I mocked up my wheels I was going to need a 5/8" spacer to clear the wheel spokes and decided to go in another direction. I had heard that the "Gumby" wheels will clear the calipers, which it looks like they do. Did you have to use a spacer to clear them? Are you using the GTS quarters and fenders? FYI, keep an eye on the pins for the pads as there have been instances where they back out and can hit the wheel spokes.

vjjack04

Blown454, i never heard the gs wheels called that but think i can see why...no, i dont have wide quarters or front fenders, they are stock...didnt need a spacer for the wheels. This SRIII frame is made to put the c6 suspension components under the body.

blown454

vjjack04

I have the ZL1 rear end but i wouldnt recommend using it. What is your car set up for? I have seen some use the regular new camaro rear end....id call mike at SRIII and ask for his recommendations...you are using the SRIII frame, rght?

blown454

Yes, SRIII frame. When I saw that you were using the Z06/GS sized wheels with non-widened panels I was curious about your setup. I actually spoke to Mike on Friday and he let me know what was in your car. We had a discussion about that third member and others regarding wheel sizes months ago but not knowing what you had in your chassis, I thought "Can get a Z06 wheel in mine? I need to call Mike!" In talking with Mike, he reminded me that the rear of the frame with the Ford 9" setup (with C6 suspension) needs to be wider then the ones using the ZL1 third member so you can service the rear end. Oh well, it is what it is. Nice ride you have there and is going to be awesome when it's done!

vjjack04

Interesting. so then, what rear-end will you use? ...I sort of had a problem with the ZL1 rear end snout angle and the transmission...ended up having to get a dual CV joint drive shaft...I hope it works when I get it on the road (I hope within then next month....)

ramjet68

blown454

Going with the Ford 9" center section. Hope everything goes smooth (no pun intended) with your drive line angles. I bet you're stoked to being approx. a month away from it being on the road!

vjjack04

Pretty sure they are what came on the '13 GS. 18x9.5 on front and 19x12.5 rear....

vjjack04

You know this has been a longer deal than I wanted....and a lot of funds....I should get the steering column within 2 weeks and then i should be able to break it in...the deal then will be getting the body re-looked and then it will take a while to get the interior right....but just having it running and movable will be good. I can tell you that Mike at SRIII is a great engineer and good guy...he answers my phone calls always and e-mails....I just didn't realize the difference between hot rodding a car and totally re doing something that wasn't designed to be that way from the factory....looking forward to being past the apex and I believe getting the steering column in will be that....