Hard brake pedal in a 68 why? Help

[windsor]

I have a 68 with power disc brakes. The brake pedal is hard a s a rock. With the booster hooked up to vacuum, they grab hard with just a slight touch. Then the pedal is rock hard. If I disconnect the vacuum, the pedal is hard as a rock as well. There is about a half inch of play. The car does slow without the vacuum, but it is almost impossible to stop. What makes the pedal soo darn hard?

[Gearhead999]

I'd check the rod length.

You haven't added Viagra to the brake fluid, have you???

The rod from the brake pedal isn't the same rod that comes out the other side and pushes on the mastercylinder. So you can have some free travel on the brake pedal side and not on the other side.

[PonyBoy641/2]

Hi. I own a 1964 1/2 ('65) Mustang which has a 289 in it...I would like to put a 351 Windsor in it and need to know what I need to switch around to make it work...

The Car has a 3sp manual...will it be strong enough for a bit better than stock 351?

is the 351 Windsor the same width as a 289? I'm concerned about clearance between the shock towers.

Will stock mounts work?

Any other advice on this project?

Thanks!

[mustangman65_79]

it sounds like the brake booster is either bad/leaking. or u losing vaccum somewhere. pluged line large cam.

first off, ck the vaccum

[mustangman65_79]

Originally Posted by PonyBoy641/2

Hi. I own a 1964 1/2 ('65) Mustang which has a 289 in it...I would like to put a 351 Windsor in it and need to know what I need to switch around to make it work...

The Car has a 3sp manual...will it be strong enough for a bit better than stock 351?

is the 351 Windsor the same width as a 289? I'm concerned about clearance between the shock towers.

Will stock mounts work?

Any other advice on this project?

Thanks!

pony boy, u might wanna make ur own thread, so u don't hyjack windsor here