Pop Chevy

O-k, time for me to ask a question.
I am in the process of building a 70 BB coupe race car . Gathering up parts for it and am wondering whats a good brake pad to use. Reading about the Raybestos ST-43 and like what I see, but can't find that they make it for the car. What else would be a good choice. Any ideas? Oh yea, I have to run the stock caliper.

fleming23

Carbotech makes a D8 style pad that works pretty well. I ran XP10/8s in the stock style but with the Wilwood D8-4 aluminum calipers.

johnny c

i got some PFC's .10 compound in my dad's C3. even with stock manual brakes i can still lock the tires. part number is 0008.10

the dorman historic racers are using the pfc 01 compound on the historic c3 cars. part # 0008.01 call up KNS or vengeance racing to order.

fleming23

Wasn't aware PFC made a compound that fit the D8 pad but those would obviously be a good option as well.

johnny c

yea PFC uses a FMSI number for it's part number. the FMSI is a federal # given to every new pad shape that appears on a mass produced vehicle. the numbers go in chronological order. I've seen fmsi numbers as high as 4326 on newer cars. when i ordered the 0008.10 i was immediately asked "what year of car is that for?" because it was the 8th number handed out by the FMSI people. sorry brake nerd joke.


OP,
What tires are you planning on using?

Pop Chevy

Hoosier Vintage racing tires. 27.5 x 11 in rear 26.5 x 9.5 front

jstewart10

Johnny, would you recommend the 0008.10 for autox using 200 TW tires?

I'll have disc brakes on my '63. Thx, Jason

63Corvette

Hi Pop,
I run and recommend Cobalt Friction XR1 pads.
https://www.cobaltfriction.com/
Please give them a call and talk with owner Andie Lynn.
Lou Gigliotti runs them, Duntov Motors runs them and I run them. I used to run PFC-01s or the later models, but the Cobalt pads last longer and do not require bed in procedures. Ask Andie..............

ALSO............."Hoosier Vintage racing tires. 27.5 x 11 in rear 26.5 x 9.5 front"
you "might" find that a "square" tire settup works better for you. Depends on HP etc..........

Reggie Dunlop

I'm running ST43s on my '79 with the stock calipers. Got the last set about a year ago from some outfit in NY or PA. I can dig up the receipt if you are interested.

redvetracr

If you look at all the fast guys you will see they all run the split endurance caliper mounted to the rear of the F. spindle with thicker pads, aftermarket or J-56 pistons and two piece rotors, you also need air ducted to the center of the rotor and lots of it.

redvetracr

I ran that 26.5x9.5x15 in the rear....

Pop Chevy

Thanks for the input guys ! I wish I had unlimited funds, like Duntov and the "fast" guys but I don't. I've got to build on a budget and build
SMART !
I will be running 2 piece rotors and am looking at moving the calipers to the back to get more air in.
Cobalt pads look real good but at twice the price of PFC's, do they last twice as long ?
I used to run raybestos full metallic with the inconel backing plates and could get 3 weekends out of em. Even at that after 20 laps I would loose brakes. I know, that was a looong time ago !
Tell me is there really an advantage to the dbl pins ? I have SS sleeved calipers w/J-56 pistons and insulators. I could easily machine them to the dbl pin config but wonder if it's worth the trouble.
I am building the engine now and am figuring 600 to 650hp. I don't know how to build more through that restrictive intake they have us running. Those guys must make em paper thin !! Edel perf rpm.

johnny c

what kind of racing? autocross and street duty the 0008.10 is perfect for 200 tread tire. if your road racing i would want to see something with a little more friction. something like a older 80 compound would be a good fit.

0008.11.13.44 would be a excellent compound for those massive hoosier's. you have a very large tire (large rotational mass) and a small rotor. getting cooling to the brakes is going to be a necessity.

63Corvette

No, not worth the trouble. The calipers are exactly the same caliper (according to JohnZ) with the center pin bracket milled off and drilled for the double pins. What you have (with air) is fine.
Duntov cars were pulled "for inspection of the manifold" at CoTA and were found to be legal.
http://www.svra.com/tech-zone/

redvetracr

wherever did you find J-56 pistons & insulators?

Pop Chevy

VBP has em at a quite reasonable price !

Pop Chevy

The PFC 11 compound sounds real good for the front. Use em in the rear too ? I can get em for $170 a set.

redvetracr

good luck with that...

69autoXr

I don't find them. In fact a search of J-56 on the VBP website only yields two hits, both for brake line kits, but no pistons.

johnny c

i would run a square pad set up, that way the tq is the same f/r. it's best to add adjustable prop valve for balancing. get the wilwood one, they cost about 60 bucks.

call up Vengeance Road racing to get them. they are sight sponsors, and they order threw me. so i can verify that you'll get the right stuff. http://vengeanceracing.net/ 678 513 7105