Caddy caliper question

[GM Man]

I did a search and I couldnt find what I was looking for. I picked up a set of calipers off of a 79 caddy fleetwood, will these work or do I need the eldo calipers?

 

[moneypit]

I did a search and I couldnt find what I was looking for. I picked up a set of calipers off of a 79 caddy fleetwood, will these work or do I need the eldo calipers?

I believe you are looking for the ever rare 77-78 eldo calipers they have bigger pistons on em.

 

[GM Man]

The piston size on these are about 2 1/2 inches in dia. Do you know the size of the eldo calipers?

 

[Muddytazz]

It's not the piston size that is the issue, its the rotor thickness that matters. The fleetwoods run a bit thinner rotor than the eldo's. The eldo's run the same thickness rotor as ours.

 

[frankin5]

to use this calipers, you have to use the rotors off the 88 and up IF pickups. 1" thickness.

 

[GM Man]

It's not the piston size that is the issue, its the rotor thickness that matters. The fleetwoods run a bit thinner rotor than the eldo's. The eldo's run the same thickness rotor as ours.

I measured the thickness and compared it to the 10bolt/D44 calipers that I have and the Caddy calipers have about 1/16 more room than the 10bolt calipers do. So I'm wondering if I right ones or not. Does anyone know if they changed the bolt pattern on the calipers??

 

[4X4HIGH]

The only calipers that will work with an E-brake are 1976-1978 caddy eldo. The fleetwood and deville calipers use a thinner rotor and therefor those calipers won't work. The calipers look the same as far as bolt spacing goes but the pistons are different thickness not allowing them to fit over the 3/4 ton rotors.