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#26 |
Registered User
Join Date: Oct 2016
Location: Dallas Texas
Posts: 3,075
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Re: Why is drum to disc called an upgrade?
My guess is the aftermarket is shy of this due to potential liability, however according to this 5 year old reference:
https://www.pro-touring.com/threads/...ket-ABS-system There are these options: High end: Bosch system, price range 6300 tot 7800 euros Mid range: BMW Teves M60 ABS price range 4500 tot 5000 But they tell, bosch is best by far and most adjustable.. all topteams on le mans seems to use it they said.. -klb
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67 C10 fleet fuel injected '70 402, 700r4, 3.73 posi 07 335 sport turbo 6sp 94 Trans Am GT LT1 6sp posi -- sold after 22yrs 99 540 sport V8 6sp -- sold 73 240z L24 4sp -- given to friend 68 C10 step 350/350 3.73 open -- sold |
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#27 |
Who Changed This?
![]() Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 10,373
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Re: Why is drum to disc called an upgrade?
Smart money would be to find a newer truck with the goodies and dog rob the parts. You'll need sensors and so forth which will likely mean changing the rear axle. I don't remember how it was configured on my 2000 Astro van, which wouldn't work for you unless you had 5 lugs.
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~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA |
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#28 |
Registered User
Join Date: Mar 2004
Location: Hoytsville, Utah
Posts: 3,365
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Re: Why is drum to disc called an upgrade?
Just keep the drums!
![]() ![]() ![]() Seriously though, my drums are all new, well 15,000 miles ago, and with power brakes they'll stop 'Ol Green pretty well. But I'm going with front discs on my Panel build.
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'68 Panel Project Boogie Chillin' '68 C-10 Ol' Green |
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#29 |
Registered User
![]() Join Date: Jul 2015
Location: 2nd left past the stump on a dirt road.
Posts: 2,629
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Re: Why is drum to disc called an upgrade?
Yikes! ABS on my vintage vehicle. Some are different than others.
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#30 |
Senior Member
![]() Join Date: Dec 2013
Location: Gods country East,Tn
Posts: 8,545
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Re: Why is drum to disc called an upgrade?
"Re: Why is drum to disc called an upgrade? "
The plain and simple truth is because it is an upgrade . Some guys are just fine with drum brakes ...Some aren't ![]() If your looking at doing 100' power brake burnouts ( which in an empty bed pick up isn't hard to do ) don't upgrade to 4 wheel discs ,You'll just end up smoking your trans or clutch . ![]()
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![]() 1967 Factory short bed - Old school '71 - 350 / 4bolt / 487 heads / Edelbrock C3BX Muncie M-22 4 speed / Hurst Comp plus Factory 12 bolt posi 3.73 / 255-70-15 Smoothed firewall / Factory cowl induction Power disc brakes / power steering / 3.5-5" drop |
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#31 |
Registered User
Join Date: Jan 2011
Location: Chattanooga, TN
Posts: 2,148
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Re: Why is drum to disc called an upgrade?
Probably don't is the simple answer. ABS is designed for a specific vehicle. A lot of money is spent tuning for that specific truck. You can't retrofit and expect it to perform. I have wondered if an '88ish rear ABS only system might could be made to work, but I would not try it. You would have to have that axle to get the sensor and on and on. The only way that might be safe would be a chassis swap and keep everything-even then you are not going to have the same weight balance as the original vehicle.
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'83 K20-TPI '73 C10 '79 C10-ex-diesel(SOLD) '07 Tahoe(Son driving) '14 Suburban-DD '71 C10-current project |
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#32 |
Registered User
Join Date: Feb 2018
Location: Gorham, ME
Posts: 96
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Re: Why is drum to disc called an upgrade?
I've had many cars over the years and currently do that have drums on all 4. When they get wet, really wet, you can't stop.
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68 K20 Custom Camper/CST Wrecker. 97 GMC K1500 short bed reg cab. |
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#33 |
Registered User
Join Date: Jul 2015
Location: Sedalia Mo.
Posts: 1,131
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Re: Why is drum to disc called an upgrade?
I have a 67 Pontiac with power drums all the way around and if the car is moving, you are also contemplating the next stop. It's a whole different way of driving! I also have a 67 ford with power disc conversions all the way around...it stops real good compared to the Pontiac. In fact, the Pontiac will lock up the brakes for emergencies, but your back side will be out of the seat under the pressure you have to apply and the urgency involved causes a strong knee jerk reaction, once she stops...you start breathing again. It will get front disk brakes with the next going through.
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He who is without oil shall throw the first rod. Compressions 8.7:1 1972 C10 1976 C10 (parts truck) 1985 K20 |
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#34 | |
Who Changed This?
![]() Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 10,373
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Re: Why is drum to disc called an upgrade?
Quote:
That said, as long as the brakes are properly sized for the application, the ABS could be added, because the real function there is to limit brake lockup.
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~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA |
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#35 |
Registered User
Join Date: Jan 2016
Location: Barber City, CA
Posts: 4,777
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Re: Why is drum to disc called an upgrade?
sensible driving is the best upgrade, sadly not an option for some people..
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I started out with nothing - and I still have most of it |
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#36 | |
Senior Member
![]() Join Date: May 2012
Location: Scottsdale, AZ
Posts: 1,906
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Re: Why is drum to disc called an upgrade?
Quote:
Nice get out of ticket free card! ![]() j
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White K20 |
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#37 |
Registered User
Join Date: Jun 2018
Location: Indianapolis IN
Posts: 114
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Re: Why is drum to disc called an upgrade?
You usually get better strength and effectiveness when you pull/squeeze/supinate, rather than push/press apart/pronate. Disc is far better than drum... physics tells us so, and actions speak volumes.
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#38 |
Registered User
![]() Join Date: Mar 2013
Location: Syracuse, Utah
Posts: 499
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Re: Why is drum to disc called an upgrade?
As stated before, the 4 wheel lock up associated with 4 wheel drums is exciting, but after what happened to me last year, my 67 will be getting front discs.
I was in the right hand lane on a four lane road, two kids pulled out from a parking lot to my left heading the same direction, I'm in the right lane, so they had plenty of room, right? Nope. They didnt even look, came right over into my lane causing me to jerk the wheel to the right and stab the brakes which spun the back end around in a really cool (if embarrassing) slide that i managed to stop about 6 ft from a telephone pole aimed at my drivers door. This may still happen with front discs, but I'm using it as a great excuse with the wife.... Oh yeah, and that was this time of year on dry roads to boot.
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Justin '67 C20 CST Custom Camper '04.5 LLY Duramax CCSB...sold |
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#39 |
the boat guy
Join Date: Jul 2007
Location: springfield mo
Posts: 2,339
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Re: Why is drum to disc called an upgrade?
I have found that disc brakes are easier to modulate near lockup. Sure drums can lock the tires but that's not ideal in most situations.
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67, swb, fleet, tach, throttle, 5.3, 4l60e, 3.73's, fuel cell, 5 lug, p.d.b., 4-6 drop. great little truck 66, stevens drag/ski 18' silouette, 350, 2.02 doublehump heads. comp extreme marine 278 cam, vette 7 fin valve covers, old polished edelbrock intake, velvetdrive, casale v-drive, adj cavitation plate. 28, model a rpu project, |
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#40 |
Registered User
Join Date: Mar 2005
Location: 10-Uh-See
Posts: 5,609
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Re: Why is drum to disc called an upgrade?
This thread is disturbing! I can't believe some of you actually prefer 4 wheel drum over disc brakes.
Apart from a sway bar, the disc brake "upgrade" was the best and most notable upgrade I ever made on my truck! Maybe it's because I live in the hills of east TN and not in the flat plains of Texas or Kansas. As far as the folks complaining about the cost of the disc upgrade, exactly how much is your life or the lives of your family members really worth? Just Sayin'!
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#41 |
Registered User
Join Date: Mar 2005
Location: 10-Uh-See
Posts: 5,609
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Re: Why is drum to disc called an upgrade?
It's the same as the old saying about traction for racing, "Spinning ain't winning." Well, when brakes are locked up and sliding, the vehicle isn't slowing down as quick.
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#42 | |
Senior Member
![]() Join Date: Dec 2013
Location: Gods country East,Tn
Posts: 8,545
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Re: Why is drum to disc called an upgrade?
Quote:
Here in Tn when they paint those white lines on the side of the road ,It's no Joke !
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![]() 1967 Factory short bed - Old school '71 - 350 / 4bolt / 487 heads / Edelbrock C3BX Muncie M-22 4 speed / Hurst Comp plus Factory 12 bolt posi 3.73 / 255-70-15 Smoothed firewall / Factory cowl induction Power disc brakes / power steering / 3.5-5" drop |
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#43 |
Senior Member
![]() Join Date: Dec 2013
Location: Gods country East,Tn
Posts: 8,545
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Re: Why is drum to disc called an upgrade?
Don't over drive your equipment
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![]() 1967 Factory short bed - Old school '71 - 350 / 4bolt / 487 heads / Edelbrock C3BX Muncie M-22 4 speed / Hurst Comp plus Factory 12 bolt posi 3.73 / 255-70-15 Smoothed firewall / Factory cowl induction Power disc brakes / power steering / 3.5-5" drop |
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#44 |
Senior Member
![]() Join Date: Jul 2002
Location: Oak Harbor, WA
Posts: 709
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Re: Why is drum to disc called an upgrade?
Growing up, my first car was a 1965 Dodge Dart. Leaning tower of power, 3 speed OTC and 4 wheel drum brakes with a single reservoir master cylinder. Cars like this to a young kid will either 1: Get you in all kinds of trouble in rainy Oregon, or 2: Teach you to drive in a very thought out and decisive manner. Coming down off of a local mountain,(the steep type, cut originally for logging trucks) I learned of something new to me called brake fade.....it wasn't fun. The non syncro 3 speed wasn't much help either. We made it down safely but I paid MUCH more attention to situations like that. Disc brakes to me are definitely an upgrade if for nothing else besides keeping that from happening again.
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#45 |
Registered User
Join Date: Mar 2005
Location: 10-Uh-See
Posts: 5,609
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Re: Why is drum to disc called an upgrade?
Exactly!!
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#46 |
20' Daredevil (Ret)
![]() Join Date: May 2003
Location: Jefferson State
Posts: 13,621
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Re: Why is drum to disc called an upgrade?
Beautiful country -- there's some like it where I live, and many of the roads are just like in your pic. Edge stripes on two-lanes following the contours of the land. Flatlanders get nervous, say the roads are too dangerous. Horsefeathers, all you gotta do is drive between the lines and you're fine! Just watch out for deer, rocks, tourists, and God forbid, bicyclists on roads like these.
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- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
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#47 |
Registered User
Join Date: Apr 2011
Location: formerly NY currentlyNC
Posts: 389
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Re: Why is drum to disc called an upgrade?
all of the above reasons....plus iirc the discs use larger wheel bearings and spindle diameter...i'm not positive cause i did my conversion 38 years ago and it was necessary then....
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1970 short step c10 leaf spring 454 |
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#48 |
All about them K’s
![]() Join Date: Jun 2014
Location: Land of Entrapment
Posts: 6,370
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Re: Why is drum to disc called an upgrade?
Reminds me of home in the blue ridge. Thanks to the picture those mountain roads are no joke they get real fun in the snow when you can’t see the lines. Pretty good pucker factor of the back side at times. Disks are king in the mountains no doubt about it.
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Tyler '57 3100 http://67-72chevytrucks.com/vboard/s...d.php?t=813888 '72 K20 Cheyenne http://67-72chevytrucks.com/vboard/s...d.php?t=662879 ‘69 K10 SWB http://67-72chevytrucks.com/vboard/s...d.php?t=805206 '98 Silverado LT K2500HD ECLB Vortec 454/4l80E: 6" lift 315/75/16's ‘87 IROC-Z all original 50K mile survivor TPI 305 IROC Blue ‘10 Camaro 2SS/RS Aqua Blue Metallic #93 -version 2.0 ![]() |
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#49 |
Registered User
![]() Join Date: Jul 2015
Location: 2nd left past the stump on a dirt road.
Posts: 2,629
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Re: Why is drum to disc called an upgrade?
Driving right is cost effective. Both in terms of parts and driving. I have an awesome life insurance policy.
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#50 | |
Registered User
Join Date: Apr 2017
Location: Knoxville, Tennessee
Posts: 891
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Re: Why is drum to disc called an upgrade?
Quote:
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1969 GMC K25 2007 Chevy 2500HD Classic Duramax 1999 Tahoe 2DR 4WD Base Model 5.7l |
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