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#1046714 - 12/31/16 05:28 PM front disc upgrades/questions  
Joined: Jan 2006
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waldo786 Offline
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waldo786  Offline
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DE
First off I want to thank all who commented on my thread about rear disc brakes. Secondly, I'd like to ask about the front discs also. Is there a factory or aftermarket kit or parts that are a good upgrade to the front brakes that doesn't cost too much or require much if any modifications? I saw a couple kits that were close to $1K for upgraded front disc brakes. I feel like that's an awful lot of money just to upgrade the discs. Just curious also if anyone is running drilled and slotted rotors up front? Do they make any difference in stopping power? I've heard mixed reviews about them for the street.

Last edited by waldo786; 12/31/16 05:29 PM.
#1046720 - 12/31/16 10:00 PM Re: front disc upgrades/questions [Re: waldo786]  
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Buick Runner Offline
10+ Year
Buick Runner  Offline
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Dharma station 1 the Hydra
They sell front calipers with larger pistons that bolt right on. About the best cheap brake upgrade is to use quality brake pads like severe duty cop pads.

Another thing to look into is brake booster upgrade. Many SSs came with single diaphragm boosters, and dual diaphragms boosters are a good upgrade.

Last edited by Buick Runner; 12/31/16 10:03 PM.

SBC powered 1987 Regal with TES headers, ZZ4 intake, ZZ4 PROM chip, mini starter, THM2004R, 2500 stall converter, 2040 cam, CCC system, and 3.73 posi rear.

2008 ex NPS P71 Crown Victoria, cop motor, cop shocks, cop brakes, and Jmod.

Never argue with an idiot.
They will just drag you down to their level and beat you with experience.
#1046723 - 01/01/17 12:32 AM Re: front disc upgrades/questions [Re: waldo786]  
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ls1_monte Offline
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ls1_monte  Offline
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Eastern Iowa
You might check the 99+ 2wd blazers, I think those calipers are an upgrade vs stock.


'87 Monte SS With a stock 11,000 mile '98 LS1/T56.

#1046729 - 01/01/17 12:47 PM Re: front disc upgrades/questions [Re: waldo786]  
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Joe87monteSS Offline
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Memphis,TN
The 98-02 Camaro/Firebird stuff isn't that bad to put on. I prefer those to the Blazer kit. The blazer calipers are heavy cast iron whereas the F body is aluminum.

With the Blazer kit, you'll need to buy the spindles too, and hope that the hubs are in good shape. They're pricey new. And you'll need the adapter kit.

With the F body kit, you'll need to modify your stock spindle, which isn't that big a deal. (cutting, drill and tap). Still will also need an adapter kit, but you'll have serviceable bearings.


Joey
Engine/head builder/machinist
1987 Monte Carlo SS 383/4 Speed
2004 Silverado
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#1046731 - 01/01/17 03:01 PM Re: front disc upgrades/questions [Re: Buick Runner]  
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malibudave78 Offline
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malibudave78  Offline
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Houston, TX
Originally Posted By: Buick Runner
They sell front calipers with larger pistons that bolt right on. About the best cheap brake upgrade is to use quality brake pads like severe duty cop pads.

Another thing to look into is brake booster upgrade. Many SSs came with single diaphragm boosters, and dual diaphragms boosters are a good upgrade.


I agree with Buick Runner.

Good pads and shoes is first on the list. Pads and shoes should be chosen for the type of driving you will be doing. With a daily driver, weekend cruiser, or drag race pad, you will want a pad that does not require a lot of heat before it starts working well. For aggressive driving, you want to choose a pad that likes more heat. For really aggressive driving, you want to choose a pad that likes A LOT of heat

Next would be replacing the 30 year old rubber lines with new rubber lines or stainless steel braided flex lines. There are two lines in the front and one line in the rear. With age, rubber lines will loose integrity and start to balloon when pressurized reducing braking performance.

If you are going to change out the brake lines, you might want to look at adding new calipers on the front and rebuilding your rear drum assembly (if keeping the rear drums) with all new components. For new replacement calipers, AFCO has NEW stock replacement calipers under part number 6635003 and 6635003. These can be bought at the big online stores (summit, jegs, speedway, etc). All other stock replacement calipers will be remanufactured (rebuilt) and rockauto.com carries some good stock replacement, reman calipers. Upgrading to a larger 2.75" diameter piston replacement caliper will increase braking performance by increasing clamping force on the rotor. Wilwood has a true 2.75" diameter piston caliper that is lighter than a stock caliper. Some of the claimed big bore calipers, that are cheaper in price, do not have a true 2.75" diameter piston. AFCO is to also have a true 2.75" diameter piston, but I have not verified this. Adding a big bore replacement caliper is the easiest upgrade (other than pads and rubber brake line replacement), and provides more clamping force and rotor torque, than the dual piston blazer upgrade.

Performance wise, drilled rotors are a waste of money on stock sized rotors. Slotted rotors may give you some performance by degassing the pads during hard braking, but it will most likely be hard to determine a performance increase on a daily driver. If your rotors are still in good shape, get them turned and reuse them.

I have not done B-body 12" dual diaphragm booster upgrade, so I cannot verify how well it will "bolt in", but doing this upgrade will increase clamping force at the rotor if using the stock g-body master cylinder. If using the g-body master with the B-body booster, you will most likely get very touchy brakes that lock up very, very easily and are hard to modulate. You will most likely have to upsize your master cylinder to the B-body master cylinder also, but you still should get more clamping force over a stock g-body vacuum booster and g-boby master cylinder setup.

#1046734 - 01/01/17 06:27 PM Re: front disc upgrades/questions [Re: ls1_monte]  
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Richie Cat Offline
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Richie Cat  Offline
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Lake Ronkonkoma, N.Y.
Originally Posted By: ls1_monte
You might check the 99+ 2wd blazers, I think those calipers are an upgrade vs stock.


They are. Blazer Extreme is the ones you want.
I have them on my car.
Spinals and brakes swap right over.
No problem at all.

Last edited by Richie Cat; 01/01/17 06:29 PM.

83 SC, 355 w/TPI
#1046736 - 01/01/17 07:04 PM Re: front disc upgrades/questions [Re: waldo786]  
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88ss408 Offline
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88ss408  Offline
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miramichi, NB
Get oversized calipers as all ready mentioned. And s10 manual brake wheel cylinders.
along with premium pads and shoes. Good hoses. Should be the best brake system you can get with out mods.


1988 monte carlo ss 408 sbc
-----------------------------------------------------
1984 monte carlo cs 400 sbc
#1046738 - 01/01/17 09:55 PM Re: front disc upgrades/questions [Re: waldo786]  
Joined: May 2007
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Buick Runner Offline
10+ Year
Buick Runner  Offline
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Joined: May 2007
Posts: 5,026
Dharma station 1 the Hydra
Besides 12 in B body dual diaphragm boosters, some G bodies came with 9 in dual diaphragms boosters instead of 12 in single diaphragm boosters. It seems 86 SSs especially came with single diaphragm boosters while prior and post 86s got 9 in dual boosters. My Regal has a factory 9 in dual diaphragm booster. Not sure if there is a difference in master cylinders between 12 in single boosters and 9 in dual boosters.


SBC powered 1987 Regal with TES headers, ZZ4 intake, ZZ4 PROM chip, mini starter, THM2004R, 2500 stall converter, 2040 cam, CCC system, and 3.73 posi rear.

2008 ex NPS P71 Crown Victoria, cop motor, cop shocks, cop brakes, and Jmod.

Never argue with an idiot.
They will just drag you down to their level and beat you with experience.
#1046765 - 01/02/17 03:48 PM Re: front disc upgrades/questions [Re: waldo786]  
Joined: Apr 2006
Posts: 3,552
GuysMonteSS Offline
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GuysMonteSS  Offline
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Joined: Apr 2006
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Kentville,Nova Scotia
I did a budget upgrade several years ago,here is a link to a blog that I made;
http://gbodybudgetfrontbrakeupgrade.blogspot.ca/2011/10/upgrading-g-body-front-brakes.html
Made a big difference in stopping power and the price was right.
Guy


GuysMonteSS '86 SS,513 BBC,AFR Heads,UDHarold/Bullet Custom Solid Roller Cam,706 lift,255/263 @ .050,Jesel Shaft Rockers,Balanced & Blueprinted,Doug Nash 4+1 5 Speed,Hurst In-Line Shifter,Ford 9 Inch Rear,SC&C Street Comp Stage 2+ Front End Kit...
#1046825 - 01/04/17 03:58 AM Re: front disc upgrades/questions [Re: waldo786]  
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waldo786 Offline
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waldo786  Offline
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Posts: 71
DE
Thank you everyone for the info. Looks like at this time, I'm really leaning towards the Blazer swap. Seems like not too hard to do and I priced out parts and they weren't too expensive. Also looked into Scarebird for the rear disc brakes.

#1046997 - 01/10/17 01:02 AM Re: front disc upgrades/questions [Re: waldo786]  
Joined: Jan 2006
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waldo786 Offline
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waldo786  Offline
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Posts: 71
DE
Thanks for all the info everyone. I did a LOT of research on all the brake stuff you all posted and kits online. I pieced together all new parts except spindles and dust shields for the blazer upgrade upfront, which included new tie rod ends inner and outter and ball joints upper and lower. I also bought the Scarebird bracket for in back and new parts for the back discs also, including a new proportioning valve. I bought quality stuff too like Moog for the sealed bearings and all the tie rods and ball joints. Cost me about $1000 for everything. I'm looking forward to seeing how it does when it's all put together. I figured I'd up the brakes as it turned out my 305 was no good so I swapped it out for a brand new 350/290 with edelbrock pro flo 3 efi, and full 2.5" dual exhaust with flowmasters. This thing is going to be sick.


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