1969 valiant with 13 inch wheels

sketch said

i may only go with the front disc. the car is original and has all new drums but they stick and squeal no matter how many adjustments i have. and they pull to the right if he presses down too hard. he is a new driver and i just feel that disc are safer but i have been told if i put disc, the 13s won't work so i have to change wheels and rims. if i do that, i have to change the rear wheels too, right? other wise the car will slant down. He wants to keep it as original as possible but knows he needs discs.

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Pulls to the right when he steps hard on them can be a few things. Either the left front brake shoes are not adjusted out enough so the front shoes on both sides dont grab at the same time. The left front wheel cylinder could be sticking and not moving.

It may be something as simple as that, or the left front fluid line could have some rust in it restricting it. Disconnect the line at both ends, and put compressed air through it to see if it's clear. Sometimes the old rubber flex hoses swell shut. I would replace them anyways.