70 LT-1 front rotors. Riveted?

[Dennis D.]

Pics from the shop
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[Joe L.]

Re: 70 LT-1 front rotors. Riveted?

Pics from the shop
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[Dennis D.]

Re: 70 LT-1 front rotors. Riveted?

That's for confirming Joe.
What's hard to believe is that these could be original 53 year old rotors. It appears the "hats" are black which I would think wasn't originally finished that way. If they are replacement, someone went to alot of trouble to rivet them on.

[Leif A.]

Re: 70 LT-1 front rotors. Riveted?

That's for confirming Joe.
What's hard to believe is that these could be original 53 year old rotors. It appears the "hats" are black which I would think wasn't originally finished that way. If they are replacement, someone went to alot of trouble to rivet them on.

Dennis,
Actually, not hard to believe at all. The disc brake system on the C2-C3 was over engineered. Unless someone was seriously negligent in the maintenance of their brake system, rotors survived...mine did on my '67. Why did your shop disassemble them? If they mic out with enough thickness and are not warped, they're should be no reason to replace them. Scuff them up and reuse.

[Joe L.]

Re: 70 LT-1 front rotors. Riveted?

That's for confirming Joe.
What's hard to believe is that these could be original 53 year old rotors. It appears the "hats" are black which I would think wasn't originally finished that way. If they are replacement, someone went to alot of trouble to rivet them on.

Dennis-------


GM rotors, PRODUCTION or SERVICE, were never supplied with black painted center sections. However, some aftermarket rotors were/are supplied as assemblies with riveted-on hubs. It's very possible that some of those could have been supplied with black painted center sections.

As far as longevity of original rotors goes, my original owner 1969 with 200,000 miles still has its original rotors.

[Dennis D.]

Re: 70 LT-1 front rotors. Riveted?

Dennis,
Actually, not hard to believe at all. The disc brake system on the C2-C3 was over engineered. Unless someone was seriously negligent in the maintenance of their brake system, rotors survived...mine did on my '67. Why did your shop disassemble them? If they mic out with enough thickness and are not warped, they're should be no reason to replace them. Scuff them up and reuse.

The surface of the disc was deteriorating.

[Chris H.]

Re: 70 LT-1 front rotors. Riveted?

Joe, 200k miles, very impressive. And original rotors too. Has the drivetrain been rebuilt? (Motor, transmission, differential?)

[Joe L.]

Re: 70 LT-1 front rotors. Riveted?

Joe, 200k miles, very impressive. And original rotors too. Has the drivetrain been rebuilt? (Motor, transmission, differential?)

Chris------


Original engine was removed from the car at 125,000 miles and later rebuilt (but not yet re-installed in the car). Transmission was never rebuilt and removed from the car at 200,000 miles. Differential was rebuilt at 200,000 miles.

I built an aluminum big block from mostly new or NOS GM components and have installed it in the car but have not run it yet. I also built a Muncie M-22 transmission from all NOS GM components that I purchased years ago. It's in the car now.

Photos of the rebuilt original engine and the aluminum big block are below:

[Mark F.]

Re: 70 LT-1 front rotors. Riveted?

Hi Joe,
your photos apparently did not attach...

[Leif A.]

Re: 70 LT-1 front rotors. Riveted?

Chris------


Original engine was removed from the car at 125,000 miles and later rebuilt (but not yet re-installed in the car). Transmission was never rebuilt and removed from the car at 200,000 miles. Differential was rebuilt at 200,000 miles.

I built an aluminum big block from mostly new or NOS GM components and have installed it in the car but have not run it yet. I also built a Muncie M-22 transmission from all NOS GM components that I purchased years ago. It's in the car now.

Photos of the rebuilt original engine and the aluminum big block are below:

Joe,
How long has your car been off the road and under restoration? Expected completion date? And, yeah, no photos.

[Joe L.]

Re: 70 LT-1 front rotors. Riveted?

All-------


Well, it's strange on the photos. I can see them when I view the thread but, apparently, they don't appear for others. I'll try posting them again here.

As far as the car being off the road, it's been a VERY LONG time and I'm too embarrassed to say especially since about 6 hours work would have it done. But, I've come to the conclusion that there are a few things I need to re-do on the rear and that frustrates me to inaction (my latest excuse). Maybe I spend too much time here on the TDB instead of working on my own project?

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[Chris H.]

[Joe L.]

Re: 70 LT-1 front rotors. Riveted?

Wow, that’s a beautiful motor. Is that a period block the late 60s? I can understand wanting to leave it on a stand, much easier viewing.

Chris-------

It's the original 300/350 from my 1969. All of the components you see except the spark plugs are original to the engine. Internally, it's not as-original. Among other things, it's now got an hydraulic roller cam.