Re: 1968 Fury Disc Brake Swap from a 1975 Newport
[Re: Twostick]
#810055
09/23/10 11:50 PM
09/23/10 11:50 PM
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Joined: May 2003
Posts: 6,621 Downtown Roebuck Ont
Twostick
Still wishing...
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Still wishing...
Joined: May 2003
Posts: 6,621
Downtown Roebuck Ont
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You could look at this kit http://ecihotrodbrakes.com/dodge_plymouth_discbrake_conversions.htmlI spoke with the owner at Carlisle a few years ago and he said it will work with the drum brake booster because the GM calipers it uses have pistons that are much larger than Mopar ones and don't require as much pressure to get the same clamping force. Nice looking kit. Laser cut brackets, ( the Scarebird brackets if they haven't updated them look like at least 2 pieces welded together) aluminum hubs and it uses your drum brake spindles. 13" rotors optional. For the ultimate you need to call member AndyF http://www.arengineering.com/caliper/viper2/viper_ab13.html for one of his Viper kits. He doesn't list a kit for a C-body but I have heard of guys adapting a Wilwood B-body kit to a C-body by either drilling out an existing hole or relocating one in the bracket so maybe he could do the same. Kevin
Last edited by Twostick; 09/24/10 12:05 AM.
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Re: 1968 Fury Disc Brake Swap from a 1975 Newport
[Re: Rick_Ehrenberg]
#810057
10/07/10 06:45 AM
10/07/10 06:45 AM
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Joined: Mar 2005
Posts: 296 Germany
1964Polara
OP
enthusiast
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OP
enthusiast
Joined: Mar 2005
Posts: 296
Germany
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Quote:
I'd be very cautious re: the booster. The comment above (fine in normal driving, watch out in emergency) are well taken. From my experience, you need a dual-tandem or large-diameter booster, even with the late Dodge Truck calipers (Scarebird).
Pix of completed Scarebird setup (from Mopar Action article) attached.
Rick
Mark from Scarebirds writes me: "I attached the info sheet - quite a bit is available in Deutschland, check to see if rotors are amongst them as they are very expensive to ship int... Your stock booster will work fine with a disc master."
The Info sheet says: "Master cylinder and proportioning valve specs are quite varied. I would recommend 1976 Cordoba or similar disc master cylinder for best performance match for 65-68 cars, and use the stock disc master for later vehicles."
Hmmm a 1976 Cordoba Disc/Drum Master with a 1968 Drum/Drum Booster shall work??????
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Re: 1968 Fury Disc Brake Swap from a 1975 Newport
[Re: 1964Polara]
#810058
10/07/10 09:16 AM
10/07/10 09:16 AM
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Joined: Dec 2006
Posts: 3,533 Indiana
Fury Fan
master
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master
Joined: Dec 2006
Posts: 3,533
Indiana
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Based on the 2 quotes, your assessment would be logically correct. However, using a drum booster goes against everything I've read about a disc conversion. I have read many places that discs require higher line pressure to operate than drums do. The boosters were 'increased' for disc applications, and this can be verified easily - every C-body parts listing will show different boosters between disc and drum. There's gotta be a reason the engineers did that. Many years ago I swapped to discs and installed a '71-73 disc booster on a manual-brake pedal. Pedal effort was very light and the car had excellent braking performance in normal/agressive driving. Control was good due to the long pedal travel. I would be curious how a drumbrake booster might stiffen up the pedal feel in that application. However, for someone doing it from scratch, if you're going to deviate from factory combinations, be prepared to do some test panic stops, and be prepared to swap some parts out if necessary. I wouldn't be scared to try a few combos as I have a handful of boosters and rebuilt master cylinders are cheap. If I was outside the USA, though, I'd try to find the proven factory combination of parts the first time.
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Re: 1968 Fury Disc Brake Swap from a 1975 Newport
[Re: Andrewh]
#810060
10/09/10 04:50 PM
10/09/10 04:50 PM
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Joined: Dec 2005
Posts: 1,169 Cruising!
QuickDodge
super stock
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super stock
Joined: Dec 2005
Posts: 1,169
Cruising!
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In regard to swapping the late C-body disks onto the early C-body, there MIGHT be a way to do it. According to this post in the tech archives, it might be possible to swap the entire front sub-frame from the 75 into a 68. http://www.moparts.org/Tech/Archive/susp/2.htmlI've NOT tried this, or even measured it yet. But I really like the idea of swapping in a later subframe.
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