69 manual brakes question

[camaro608]

hey guys wow its been a while.....

im in the Oswego East high school auto club, actually im the president, we have a 1969 camaro that we have been striping down to bare metal and doing all of the work ourselves and hopefully this summer it will go down the track. it was a yellow car with yellow interior. (interior is for sale if interested)

the cam we have in the motor is way to big to run vacuum brakes and we wont have power steering. what should i run to make this work without a booster? we will be running front disc with rear drums. any help would be great thanks

[camaro608]

anyone have ideas?????

we have been looking at a wilwood front brake set-up and its got 4-piston calipers and the largest rotor you can fit in a 15" rim. any ideas on what master cylinder to use......?

[Tito]

You're gonna need to ask wilwood what master cylinder bore size they reccomend for that setup --- I'm not sure what size rotors or pistons you're talking about using. That said, as a (very general) starting point, a 1" bore master from a '70 corvette with manual brakes is a good starting point. You'll need to move the brake pushrod up to the "upper" hole in the brake pedal, which gives better mechanical advantage and you'll need to dig up or make a manual brake pushrod.

[dhutton]

I think the Wilwood 7/8" master is worth looking at.

Don

[Apogee]

If it was a disc car, I'd stick with stock brakes and run some good, aggressive street pads and some quality rotors. IMO, you're better off waiting to upgrade the brakes when you increase your wheel size to 17's or larger as you're going to get a lot more bang for the buck.

If you wanted to stay old school with the 15's, you could always run the C3 Corvette 4-piston calipers and rotors. That's what the vintage racers run to stay within the rules at most tracks. There's a very nice Camaro with the the 4-piston calipers in this thread: https://www.pro-touring.com/forum/sh...ad.php?t=36726

[camaro608]

If it was a disc car, I'd stick with stock brakes and run some good, aggressive street pads and some quality rotors. IMO, you're better off waiting to upgrade the brakes when you increase your wheel size to 17's or larger as you're going to get a lot more bang for the buck.

If you wanted to stay old school with the 15's, you could always run the C3 Corvette 4-piston calipers and rotors. That's what the vintage racers run to stay within the rules at most tracks. There's a very nice Camaro with the the 4-piston calipers in this thread: https://www.pro-touring.com/forum/sh...ad.php?t=36726

yah i agree we could get bigger brakes and such with a larger wheel but i have to stick with a 15" because its a drag car

[Apogee]

My bad...I assumed it would be a pro-touring build, not a drag car. What could I have been thinking? Any reason you think you need or want to spend the money on aftermarket brake kits when you're just going to be drag racing the car? Are you looking to shed weight or are you concerned about having enough braking performance to stop the car once after a 1/4 mile run?

GM offered manual disc/drum configurations in 1969. That would be a good starting point for a manual setup with OE replacement components. If you want a little less peddle effort, you could always drop the bore size on the MC. I think you'll find that the 7/8" Wilwood unit is too small and won't provide the necessary volume for the large 2-15/16" diameter single piston calipers and drums.

[ProdigyCustoms]

Wilwood 260-9439 7/8" bore will be perfect with a Wilwood 140-2285b front kit will fit in your wheels. But if you are running drag skinnies, we may be able to fit bigger brakes

[camaro608]

thanks guys

[strtlegal]

run a hydrobooster from hydratec