1970 Corvette
Thread Starter
Cruising
Joined: Nov 2012
Posts: 14
Likes: 0
From: South Riding Virginia
1970 Corvette
I'm looking to replace the original rear rotors on my !970 Corvette, Any recommendations, GM no longer stocks replacement rotors.
Standard stock rotors or drilled and slotted? Calipers were replaced three decades ago with stainless steel lined calipers and they appear to still be solid.
Standard stock rotors or drilled and slotted? Calipers were replaced three decades ago with stainless steel lined calipers and they appear to still be solid.
1967 Pedal Car Champion
Joined: Mar 2020
Posts: 9,137
Likes: 4,247
From: US-PNW
What is your reason for needing new rotors? The only time I'd replace my rotors is if they are thinner than minimum spec - which I can't recall but is easily looked up.
Those old rotors are not like modern, thinner walled rotors. If they need to be turned to get rid of deep grooves, look for a shop that does on-the-car turning. The rotors were an assembly with the hubs when manufactured - they were trued on the bearings and hubs they were mounted to. If you put new/different rotors on you will need to shim them so they have nearly zero run-out. If you remove your old ones to have them trued, you run into the same shimming issue.
Those old rotors are not like modern, thinner walled rotors. If they need to be turned to get rid of deep grooves, look for a shop that does on-the-car turning. The rotors were an assembly with the hubs when manufactured - they were trued on the bearings and hubs they were mounted to. If you put new/different rotors on you will need to shim them so they have nearly zero run-out. If you remove your old ones to have them trued, you run into the same shimming issue.
Burning Brakes
Joined: Dec 2003
Posts: 1,150
Likes: 154
What is your reason for needing new rotors? The only time I'd replace my rotors is if they are thinner than minimum spec - which I can't recall but is easily looked up.
Those old rotors are not like modern, thinner walled rotors. If they need to be turned to get rid of deep grooves, look for a shop that does on-the-car turning. The rotors were an assembly with the hubs when manufactured - they were trued on the bearings and hubs they were mounted to. If you put new/different rotors on you will need to shim them so they have nearly zero run-out. If you remove your old ones to have them trued, you run into the same shimming issue.
Those old rotors are not like modern, thinner walled rotors. If they need to be turned to get rid of deep grooves, look for a shop that does on-the-car turning. The rotors were an assembly with the hubs when manufactured - they were trued on the bearings and hubs they were mounted to. If you put new/different rotors on you will need to shim them so they have nearly zero run-out. If you remove your old ones to have them trued, you run into the same shimming issue.
