Rear discs, nice improvement or novelty
#1291373
08/25/12 10:27 PM
08/25/12 10:27 PM
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Joined: Mar 2005
Posts: 322
Itasca, Texas
Mad_Scientist
OP
enthusiast
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OP
enthusiast
Joined: Mar 2005
Posts: 322
Itasca, Texas
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Those of you that have converted to rear disc brakes, was it something that you felt was worth the money? Did you notice a difference? I drive the car quite a bit, but never autocross or rally. I am on the fence about doing the conversion, but need a new set of drums. I figure now is the the time to do the conversion before I spend $70 on drums. 
69 Super Bee 440 5-speed
70 Dart Swinger 340 4-speed
69 Camaro SS 396 4-speed
66 Cutlass Convertilbe
70 Judge Ram Air III 4-speed
68 F-100 SWB
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Re: Rear discs, nice improvement or novelty
[Re: MuuMuu101]
#1291377
08/26/12 05:11 AM
08/26/12 05:11 AM
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Joined: Jan 2003
Posts: 27,467
So Cal
autoxcuda
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,467
So Cal
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Quote:
I had disc brakes all the way around on all of the cars I've owned. However, all of them were newer than 1990. When I bought my Dart, I was kind of paranoid driving around in it thinking I have drums all the way around because it wasn't stopping as fast as I'd like. I always feared I would have brake fade and crash into the person in front of me. Later I found out I actually had 4 piston disc brakes in the front with the 9" drums in the back. So I'd definitely say, discs in the back is a big plus. When I work on brakes in my Dart I am going disc brakes all the way around.
BTW, you've actually got 10" rear drums on your Dart.
Perception is reality.
I drove a 69 Dart with samee factory 4 piston brake and 10". All parts rebuilt though. It could lock them up at any time in normal driving.
Now, did it "feel" like the 4 wheel disc brake modern somewhat performance inspired cars I've regularly driven. No.
But I really think a lot of that is because of the handling of those modern cars. They have way less nose dive. Lower center of gravity, shocks, and suspension that resist dive. Tires with more grip....
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Re: Rear discs, nice improvement or novelty
[Re: Mad_Scientist]
#1291378
08/26/12 02:15 PM
08/26/12 02:15 PM
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Joined: Mar 2003
Posts: 4,848
Memphis
HemiRick
master
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master
Joined: Mar 2003
Posts: 4,848
Memphis
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The only advantage of disks over drums is they cool off faster. Do you ever have the need to stop from high speed more than once in a short period of time? If not you have no need for rear disks.
Take care,
Rick
68 Coronet R/T 440 & 68 Charger 528 Hemi,and 5 Challengers! 6 cyl, 318, 360, 383, 451
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Re: Rear discs, nice improvement or novelty
[Re: MuuMuu101]
#1291380
08/26/12 05:50 PM
08/26/12 05:50 PM
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Joined: May 2003
Posts: 15,487
Florida
scratchnfotraction
I Live Here
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I Live Here
Joined: May 2003
Posts: 15,487
Florida
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Quote:
I had disc brakes all the way around on all of the cars I've owned. However, all of them were newer than 1990. When I bought my Dart, I was kind of paranoid driving around in it thinking I have drums all the way around because it wasn't stopping as fast as I'd like. I always feared I would have brake fade and crash into the person in front of me. Later I found out I actually had 4 piston disc brakes in the front with the 9" drums in the back. So I'd definitely say, discs in the back is a big plus. When I work on brakes in my Dart I am going disc brakes all the way around.
on my 68 dart i used 73 disc brakes up front,then upgraded the to the 12" R body disc/rotors.
used 11x2.5 drums on the rear from a 73 newport. big difference over the 10" drums as far as stoping power,even with the small front disc, the 11x2.5 were noticably better.
i also used the 4 bolt to 2 bolt alum MC adaptor with a 79 truck alum MC for a manual brake 12" disc/11x2.5 drum set up.
I dont think disc on the rear would have been any better than that set up.
weighed a little more but stoping was killer with no brake fade when working them in heavy traffic. I ran drag skinnys and never had anytrouble stoping fast and they never locked up unless it was a panic braking moment.
I want rear disc on my 440 truck for the kool factor though. 
IMHO,swap the 10s out for 11s and use a 2.5 wide drum/shoes
try stoping with a 68 Dart BB/727 and manual 9" drums at all 4 corners. 
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