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130 + MPH BRAKES #2485048
04/19/18 12:23 PM
04/19/18 12:23 PM
Joined: Oct 2008
Posts: 1,176
East Coast
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A/MP Offline OP
super stock
A/MP  Offline OP
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East Coast
By the end of the summer, my W2 360 should be finished. At present, I'm running 10.50-60 with a SB in a 3000 lbs car. The new motor should be 10.10 to 9.90. Should I be thinking new brakes other than the stock factory 73 disc/drum combo?

Re: 130 + MPH BRAKES [Re: A/MP] #2485050
04/19/18 12:27 PM
04/19/18 12:27 PM
Joined: Jan 2003
Posts: 8,005
Tulsa OK
Bad340fish Offline
master
Bad340fish  Offline
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Tulsa OK
That combo will probably work just fine but you could shed some rotating mass with some aftermarket stuff. Personally I like the willwood stuff, it seems like a good value. I have had a front kit for about 15 years and am putting their discs on a D60 I am about to install.


68 Barracuda Formula S 340
87 "Chrysler" Conquest
Re: 130 + MPH BRAKES [Re: A/MP] #2485064
04/19/18 12:56 PM
04/19/18 12:56 PM
Joined: Jan 2003
Posts: 13,319
Marion, South Carolina [><]
an8sec70cuda Offline
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an8sec70cuda  Offline
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Marion, South Carolina [><]
I have Aerospace brakes on my cuda and they work OK. Having said that, the next time I buy a brake kit it'll be Wilwood. Getting simple replacement parts from Aerospace can be a nightmare.


CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
Re: 130 + MPH BRAKES [Re: A/MP] #2485070
04/19/18 01:05 PM
04/19/18 01:05 PM
Joined: Jan 2003
Posts: 30,947
Oregon
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AndyF Offline
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Oregon
I'm putting a Doctor Diff Viper kit on the front of my Duster. I figure 130 mph will be a piece of cake with this setup.

DSC_2236 (Large).JPG
Re: 130 + MPH BRAKES [Re: A/MP] #2485091
04/19/18 01:44 PM
04/19/18 01:44 PM
Joined: Dec 2005
Posts: 11,408
Fulton County, PA
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CMcAllister Offline
Mr. Helpful
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Fulton County, PA
Whatever you do, plan the whole system instead of a bits and pieces approach. Master cylinder size, plumbing, get rid of OE valves and switches, and get the correct calipers and kits. Don't end up with dirt track parts and then wonder why the car won't stop.


If the results don't match the theory, change the theory.
Re: 130 + MPH BRAKES [Re: A/MP] #2485117
04/19/18 02:59 PM
04/19/18 02:59 PM
Joined: Jan 2003
Posts: 6,266
Renton Washington
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Triple Threat Offline
master
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Renton Washington
Went from '73 disc front/ 10" drum rear to 4 wheel strange race brakes and the car stops MUCH better.


-Dustin
67 Dart, 9 second, 392" G3 Hemi
68 Barracuda 340 F/SA
Re: 130 + MPH BRAKES [Re: A/MP] #2485136
04/19/18 03:37 PM
04/19/18 03:37 PM
Joined: Aug 2003
Posts: 43,007
Bend,OR USA
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Cab_Burge Offline
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Bend,OR USA
Which body style and size of the rear brakes does it have now?
The reason I'm asking is if you have the small OEM A body 10x1 3/4 rear drums just switching to a set of 10x2.5 brakes on the back will help your car stop a bunch better scope twocents
BTW, I use to run a 1970 A body car in S/ST that was a little heavier than yours with the original stock disc brakes and the stock size rear drums, I ended up having a brake relining CO in SO CA reline several sets of the shoes with fork lift linings, that made a big difference on the starting line foot braking as well as stopping in the 1/4 mile up
I might a set of those left, PM if your interested in a set thumbs

Last edited by Cab_Burge; 04/19/18 03:41 PM.

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: 130 + MPH BRAKES [Re: A/MP] #2485220
04/19/18 07:04 PM
04/19/18 07:04 PM
Joined: Oct 2008
Posts: 1,176
East Coast
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A/MP Offline OP
super stock
A/MP  Offline OP
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Joined: Oct 2008
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East Coast
I've got the 73 UCA and discs.

Re: 130 + MPH BRAKES [Re: A/MP] #2485253
04/19/18 08:33 PM
04/19/18 08:33 PM
Joined: Jan 2003
Posts: 30,947
Oregon
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AndyF Offline
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Posts: 30,947
Oregon
Easy upgrade if you have 15 inch wheels is to install the larger 11.75 rotors. All you need is the larger rotors and the taller caliper bracket. You can do that swap in just a few minutes and you don't even need to bleed the brakes. The 11.75 rotors were used on the biggest B body cars so they should be fine for an A body at 130 mph.

If you want to take some weight off you can put Wilwood calipers on the larger 11.75 rotors. That is something I started doing about 20 years ago. DoctorDiff sells a kit for it now.

Last edited by AndyF; 04/19/18 08:34 PM.
Re: 130 + MPH BRAKES [Re: an8sec70cuda] #2485314
04/19/18 10:41 PM
04/19/18 10:41 PM
Joined: Jan 2003
Posts: 8,005
Tulsa OK
Bad340fish Offline
master
Bad340fish  Offline
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Posts: 8,005
Tulsa OK
Originally Posted By an8sec70cuda
I have Aerospace brakes on my cuda and they work OK. Having said that, the next time I buy a brake kit it'll be Wilwood. Getting simple replacement parts from Aerospace can be a nightmare.


I just got through replacing my wilwood front rotors. I had some trouble but it was all my fault, first I forgot that I had vented rotors, then I ordered rotors from the current Abody kit and mine is 15 years old, third time was a charm though. Every one of my mistakes was in stock at Summit.


68 Barracuda Formula S 340
87 "Chrysler" Conquest
Re: 130 + MPH BRAKES [Re: A/MP] #2485322
04/19/18 11:02 PM
04/19/18 11:02 PM
Joined: Sep 2015
Posts: 1,096
Australia
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ozymaxwedge Offline
super stock
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Australia
My old 63 Belvedere has been 9.23@145 on 4 wheel drum brakes, and before you say it dont worry I will never do it again.


1963 Plymouth Max Wedge
1971 Barracuda
Re: 130 + MPH BRAKES [Re: A/MP] #2485327
04/19/18 11:09 PM
04/19/18 11:09 PM
Joined: Feb 2010
Posts: 1,645
Phila. Pa.
Mattax Offline
top fuel
Mattax  Offline
top fuel

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Posts: 1,645
Phila. Pa.
Originally Posted By A/MP
By the end of the summer, my W2 360 should be finished. At present, I'm running 10.50-60 with a SB in a 3000 lbs car. The new motor should be 10.10 to 9.90. Should I be thinking new brakes other than the stock factory 73 disc/drum combo?

As far as swept area goes, should be good. Use decent linings and fresh fluid. Nothing super fancy on the linings, but a decent friction rating.
Brake Lining Edge Codes (and temperatures)

Re: 130 + MPH BRAKES [Re: A/MP] #2485329
04/19/18 11:19 PM
04/19/18 11:19 PM
Joined: Jan 2003
Posts: 17,916
Akron, Ohio
ProSport Offline
I Live Here
ProSport  Offline
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Joined: Jan 2003
Posts: 17,916
Akron, Ohio
My Dart had Wilwoods on the front and stock drums in the back and went 9's at 136mph. It stopped fine.


1970 Challenger, all aluminum 528 Hemi, HDK suspension, Tremec 5 speed manual
Re: 130 + MPH BRAKES [Re: A/MP] #2485331
04/19/18 11:21 PM
04/19/18 11:21 PM
Joined: Jan 2003
Posts: 17,916
Akron, Ohio
ProSport Offline
I Live Here
ProSport  Offline
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Posts: 17,916
Akron, Ohio
I do suggest vented rotors, especially if street driven.
I had 9" front drum spindles so the only kit I could find for that was the Strange-Engineering drag race kit with the thin non-vented rotors. It does ok but I would have been happier with something beefier like Wilwood.


1970 Challenger, all aluminum 528 Hemi, HDK suspension, Tremec 5 speed manual
Re: 130 + MPH BRAKES [Re: A/MP] #2485357
04/20/18 12:09 AM
04/20/18 12:09 AM
Joined: Oct 2007
Posts: 472
Minnesota, USA
humpty Offline
mopar
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Posts: 472
Minnesota, USA
Depends on how much shut down area you have at the tracks you plan to race at. I went 9.30’s @ 145 in a 3300lb Duster with the same setup as you without issue.

Re: 130 + MPH BRAKES [Re: ozymaxwedge] #2485377
04/20/18 12:42 AM
04/20/18 12:42 AM
Joined: Oct 2007
Posts: 1,070
Big Western Pencilveinya
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Uncle Barry Offline
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Big Western Pencilveinya
Originally Posted By ozymaxwedge
My old 63 Belvedere has been 9.23@145 on 4 wheel drum brakes, and before you say it dont worry I will never do it again.
I'm giggling over this. I could imagine the look on your face when you got out of the car laugh2

Re: 130 + MPH BRAKES [Re: A/MP] #2486906
04/23/18 05:25 PM
04/23/18 05:25 PM
Joined: Jan 2003
Posts: 9,670
Lima, Peru
domingo Offline
EL Master
domingo  Offline
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Posts: 9,670
Lima, Peru
go with the big 11.75" stock rotor. replace the caliper bracket get it from dr, diff
use some better pads.
easy and cheep

Re: 130 + MPH BRAKES [Re: A/MP] #2486974
04/23/18 09:20 PM
04/23/18 09:20 PM
Joined: Dec 2007
Posts: 12,587
Great Neck,LI,new york
hemi-itis Offline
I Live Here
hemi-itis  Offline
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Joined: Dec 2007
Posts: 12,587
Great Neck,LI,new york
When the rears rims are bead lock,the ID of the rim is 13 inch.Caliper size matters for wheel clearance and back space need to be attended to.


HEMI-ITIS has no cure.
My condition is fully BLOWN!!
Re: 130 + MPH BRAKES [Re: A/MP] #2487033
04/23/18 11:27 PM
04/23/18 11:27 PM
Joined: May 2003
Posts: 13,182
aZLiViN
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J_BODY Offline
I Live Here
J_BODY  Offline
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Joined: May 2003
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aZLiViN
I always find this conversation interesting. When we started running mid 9’s/ 140 I started KILLING my wilwood front rotors. At $150 a set, it was getting old. I recently added Strange rear discs to the mix and the car definitely stops easier. I’m still thinking of adding a proportion valve to the front to bias a little more to the rear.

Re: 130 + MPH BRAKES [Re: J_BODY] #2487069
04/24/18 12:27 AM
04/24/18 12:27 AM
Joined: May 2004
Posts: 12,379
Taxes & Virus's R-US, NY
Dragula Offline
I Live Here
Dragula  Offline
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Posts: 12,379
Taxes & Virus's R-US, NY
I have Wilwoods on all four corners of both my cars. We have one 1/8th mile track with a short shut down area...Nearly crashed the car at 110mph with stock disk brakes. Went with Wilwoods on all four corners, and its trapping 112mph now, and no problem, and no prop valve either....on either car. fantastic pedal feel too.


'70 Cuda,...605 EFI Hemi Street Car (6.20 best pass, 1.33 60ft)
https://www.youtube.com/watch?v=WYw6RA-k5Bk (6.25 at 108.75mph from inside car)
https://www.youtube.com/watch?v=3zQEb9uxFng (6.25 at 108mph from outside car)
https://www.youtube.com/watch?v=JCvfzsC4NgM (9.9)

'66 Barracuda AWB Stretched nose Blown 440 Car in build stage

'71 Duster Drag Car 400 Low Deck 512 best 6.002 at 115.44mph
https://www.youtube.com/watch?v=Znuo3jMUXTk
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