You won't believe how much I paid for these. They are new, but a bit beat up. The paint is chipped, there are some dings and the crossover tubes are a little bent. I'm wondering if they were spares for a race team and got knocked around in the trailer or pits. The black ones are early Viper and will be for sale. The late red ones I'll be using, but are not a full set. I have 2 LF, a RF and a RR so I'll likely keep the extra front as a spare and sell the rear one.

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Joshua

Those are nifty!

Are you going to make spindle modifications? How are you going to mount them? They look pretty big.
I take it they are going onto the A-Body.

CJ

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Part of Tyrde-Browne Racing

AR Engineering late Viper calipers on 13" rotors is what I'll be doing.
http://www.arengineering.com/caliper/vi ... _ab13.html

For those with the '73-'76 big bolt pattern late drum knuckles you can do early Viper calipers (the black ones) on either 11.75" factory rotors or 13" rotors. http://www.arengineering.com/instructsheet/index8.html
http://www.arengineering.com/caliper/viper/viper13.html

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Joshua

nice score Josh! I was hoping to get that setup when I replace these cordoba calipers

How do they compare to the KH calipers?

How do they compare? I'd have to say they are about 40% larger and weigh about 50% less, but I haven't handled a K-H caliper in a while. The K-H calipers themselves aren't bad, but the rotors they fit are too small.

I own the complete AR Engineering Wilwood Dynalite caliper and Chrysler 11.75" rotor brake package which is a much less expensive setup, but also not as capable.
http://www.arengineering.com/caliper/wi ... frame.html

I haven't decided which car (Dart or Valiant) will get which brakes. The Valiant right now is lighter and has less horsepower so it should probably get the 11.75" rotors and Dynalite brakes. The Dart will get 11.75" rotors with stock sliding calipers until I can afford the AR Engineering kit to use the Viper calipers.

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Joshua

For those of you who've used the early Viper calipers, would you say they're better (braking wise, not concerned about weight reduction) in a manual application than the stock sliding calipers? I'm curious as to whether they can be installed on late A-body disc knuckles, and if it's worth it to to it in the first place.

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'74 Duster w/ HEI ignition, beat to snot suspension, A904, 8.25" 3.55 SG rear, still being tuned up and gets 17 MPG

Know how they always build a better idiot? That's me

I believe I have figured out why these calipers were never on a car, but are beat up like they've been handled and knocked around a lot. I pulled the plug where the banjo bolt goes from the one late model rear caliper I have and the banjo-bolt hole is tapped, but it's not drilled through. There is no way for fluid to enter this caliper. I'm thinking these calipers were rejects and used for show and tell by Dodge.

It would be cake to drill the fluid inlet. If all the other parts are in the caliper as they appear to be I can still have functioning calipers. I haven't inspected the other calipers yet so more problems may yet be found. Maybe I'll run home during lunch and look at the other calipers and see if they are the same way. In any case I'll be tearing down and inspecting all the calipers and will report back.

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Joshua

I think the early viper calipers on 11.75" rotors are a wash compared to the stock calipers. You lose piston area (less brake torque), but you gain rigidity (more transmitted force due to reduced caliper flex).

Mopar Action did a brake test with a Viper caliper on one side and the stock slider on the other and the car still stopped straight. Leads me to believe that in straight braking force comparisons, neither has the advantage.

Just my opinion, but if you can't go to the 13" setup, the Viper stuff is just for looks. Don't know, maybe it helps with repeated stops, and I'm pretty sure it a bunch lighter.

I will say that it sure looks cool though.

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'15 Chrysler 200S V6
'74 Duster 360, factory 4 speed car

Hmmm, wonder if you could fit rear ones on the front, might have to look into that.

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'15 Chrysler 200S V6
'74 Duster 360, factory 4 speed car

The late rear calipers have 38/42mm pistons, fronts are 40/44mm, but otherwise look identical. In fact the casting numbers for the two halves of the caliper are the same so only the machining must be different. If you had two rear calipers they would probably work fine. I'll leave the area (and force) difference calculations to someone else.

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Joshua

That it does. And with the wheels I'm looking at getting, it might be worth doing it just for appearance sake, since the calipers will be easily visible...

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'74 Duster w/ HEI ignition, beat to snot suspension, A904, 8.25" 3.55 SG rear, still being tuned up and gets 17 MPG

Know how they always build a better idiot? That's me

Any idea what the early front caliper piston sizes are? Might give some comparison info.

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'15 Chrysler 200S V6
'74 Duster 360, factory 4 speed car

I believe the early Viper front calipers are 38/42mm as well which is why I feel two late rear calipers would work fine with an appropriately size master cylinder.

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Joshua

Either way, the 38/42 pistons have almost the same area as the last generation Z06 calipers. Leads me to believe they would work well.

Too bad you don't have a complete set.

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'15 Chrysler 200S V6
'74 Duster 360, factory 4 speed car