Brake Conversion Troubleshooting Woes!
So I will give you all the knowledge about my car and you can tell me what I am doing wrong...OR...what somebody (PO) else did wrong!
I have a 1970 Chevelle SS that started life as a 307 Malibu sport coupe according to the VIN. The car currently has a 454 from something, Turbo 400, and 10 bolt (323 maybe) with an LSD. I recently put a stage 2 BMR full suspension kit under the beast to solve a lot of neglect in the suspension. The one aspect that I was not concerned about was the brakes since I got the car with an SSBC 4 wheel disc kit preinstalled. When I was able to drive the car in a bit more spirited manner with the upgraded suspension I found out that the brakes were not up to par.
The SSBC kit was the basic 4 wheel disc conversion, nothing special, seems to be off the shelf GM parts if I had to guess. Big single piston calipers up front, single piston calipers with PB provisions at the rear. The kit came with a master cylinder, brake booster, and adjustable proportioning valve.
Here is what I have done so far...
I have replaced the SSBC master cylinder since it was contaminated with water. I went back with a stock 1.25" bore from AZ for the time being. Both front calipers have been rebuilt with new seals. Rear calipers seem to be fine....but more on that later...The whole system has been bleed SEVERAL times (2 gal brake fluid) with a power bleeder and no air the last three times.
Here are the two problems that I can't get around.
Something is still not right when you hit the pedal. The brakes will stop you, but not even close in an "emergency" situation. I only have about 2inches of pedal travel before I seem to hit a "stop" halfway to the floor. It literally feels like I am hitting something with the pedal.
The second problem, to compound the first, is no brakes to the rear axle. I am getting fluid back there with a power bleed but you can touch the disc with your fingertip after a panic stop and still keep your fingerprint! Panic stop today......front discs 450...back discs 101....it was 97 in Augusta today.
The original install of the brake kit was ****ty at best.....where should I go from here?
I know this raises more questions than answers so please hit me up for more info if needed.
Thanks in advance...you guys have always been a wealth of information!