Okay guys I don't know what to do, basically it doesn't matter how hard I press the brakes the car will just slide to a stop,

I thought if I upgraded to LS1 front brakes it would stop the problem but no luckI also changed the master cylinder
I also bleed the brakes multiple times still no changeMaybe I'm expecting the cars braking to be like a modern car but it's not possible idk,
I have not upgraded the rear brakes I have those crap iron calipers which don't even engage but I'm going to upgrade those to lt1's soon just waiting on parts​​​​​​


​​​​​EDit: sorry I think sliding is the wrong word, basically it feels like there is no pressure to lock up the brakes

Sounds like maybe air in the master cylinder.

Because the MC is at such a tilt in these cars, the lines are not at the highest point of the 2 internal cyls. That means an air bubble can get up in the part that IS the highest, and stay there FOREVER. You can run a gallon of brake fluid every day, and twice on Sundays just for good measure, and that air will STILL remain.

Only solution is to "bench bleed" the MC. Hold it level, which obviously has to be outside of the car, to position the lines at the highest point; and bleed it by itself, then without letting it get air back into it, install it and hook up the lines, then re-bleed the whole system.

If it wasn't "bench bled" before installation you're wasting your time until you do that.

Thanks for the reply. I did do bench bleed for at least an hour lol because I read about the angle thing , I'm down for taking it out and doing it again if it will fix the problem,
but would another thing cause this problem like a bad prop valve? Or bad brake booster? I'll bench bleed the master again sometime tmrw