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Canadian Poncho Homepage -> Canadian Poncho -> 65-70 Full Size Chassis Tech Forum -> 1972 Factory Dual piston Calipers, are they a good fit for my 1969 2+2
Post Info TOPIC: 1972 Factory Dual piston Calipers, are they a good fit for my 1969 2+2
65 SD L79


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RE: 1972 Factory Dual piston Calipers, are they a good fit for my 1969 2+2
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finding nice shields is the hard part. they get bent up when car is droped on ground



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LT1Caddy


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1965CS wrote:

 

I currently have 69 spindles on it and they were identical to the originals. it's the rotors and caliper supports that I have issues with. Specifically finding rotors that fit so hoping to go with the Vette rotors

 Steve.... Do you have the part #s and the specific years for these parts? If so, post them here so we can help... (will they fit other models...Chev specifically?)



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4SPEED427


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LT1Caddy wrote:
 Steve.... Do you have the part #s and the specific years for these parts? If so, post them here so we can help... (will they fit other models...Chev specifically?)

 Is this the info you are asking about?

Corvette rotors for big disc cars. - Canadian Poncho (activeboard.com)



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1966 Strato Chief 2 door, 427 4 speed, 45,000 original miles 

1966 Grande Parisienne, 396 1 of 23 factory air cars (now converted to a "factory" 4 speed)
1965CS


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LT1Caddy wrote:
1965CS wrote:

 

I currently have 69 spindles on it and they were identical to the originals. it's the rotors and caliper supports that I have issues with. Specifically finding rotors that fit so hoping to go with the Vette rotors

 Steve.... Do you have the part #s and the specific years for these parts? If so, post them here so we can help... (will they fit other models...Chev specifically?)

 Unfortunately I don't have any numbers. I can't even confirm that the spindles I have are in fact 69 and only that they were the same as the original 65. When I bought the set up, I didn't realize the support was missing since it was stored for nearly a year before I had time to install it. Even have decent dust shields.

 I have to assume it was a mix of drum and disc set up, yet there were 2 unusable rotors included.



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65 Custom Sport Convertible

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1965CS


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4SPEED427 wrote:
LT1Caddy wrote:
 Steve.... Do you have the part #s and the specific years for these parts? If so, post them here so we can help... (will they fit other models...Chev specifically?)

 Is this the info you are asking about?

Corvette rotors for big disc cars. - Canadian Poncho (activeboard.com)

 That is it! I just need source all the parts but realize the bracket will be impossible.  I believe the calipers I have now are the correct ones but I since I didn't know about the Vette rotors, I had a set machined to fit the bearings and spindle. 



-- Edited by 1965CS on Tuesday 23rd of January 2024 10:10:31 PM

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cdnpont


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The calipers, caliper brackets, steering arms and splash shields are 69-70 Impala specific. So it's very hard to piece this setup together

 

The steering arms are numbered as 3966189-R (right) and L for left.

Caliper brackets are 3974868 unidirectional.

Splash shields are 3953422-R and L


Each assembly also has two VERY difficult to find stubby caliper mounting bolts, one through the shield, bracket and into the spindle, the other same but into the steering arm. 

Spindles have no part number stamped in but 69-82 corvette or 69-70 Impala spindles are 100% identical. 65-68 Impala spindles use smaller bearings, and as such the spindle shaft diameter is smaller. I can mic the shaft if needed.

The disc brake hubs have no actual part number for the hub alone. They came integral to the rotor, and were always replaced as a unit. My hope was to try to see if a Corvette disc hub might actually be the same as the hub of the integral rotor/hub. But I've never had on in hand.

 

And as such, the drum hub, Vette studs and rotor fix comes into play.

Hope these numbers might help.



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65 Laurentian post, 67 Grande Parisienne 4 door HT. 
 
1965CS


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cdnpont wrote:

Each assembly also has two VERY difficult to find stubby caliper mounting bolts, one through the shield, bracket and into the spindle, the other same but into the steering arm. 

I didn't have thses either so I had a machine shop fabricate a few sets from grade 8 bolts.



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65 Custom Sport Convertible

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cdnpont


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If you could get 4 drum upper brake shoe and spring mounting studs, you could probably just zip the top off them at the hex and use them as bolts. They are the same thread as far as I know. 

Machine shop might be safer though lol!



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65 Laurentian post, 67 Grande Parisienne 4 door HT. 
 
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