How can I lower my entire car? I have a 64 1/2 Barracuda.

Deflate the tires.

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Joshua

Cheapest option - crank down the torsion bars up front, flip the mounts at the front of the leaf springs upside down to lower the rear.

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"Mad Scientist" Matt Cramer
'66 Dart - turbocharged 225
My blog - Mad Scientist Matt's Lair

How low do you want to go??

It is pretty easy to drop the car a few inches but it gets harder from there.
Make note that as you drop the torsion bars, the front end alignment settings change so the car should be re-aligned at it's new ride height.

Also note that the rubber "bumpers" on the LCAs and at the rear end are likely to start hitting and that action limits suspension travel & impacts handling. I cut-down the bumpers to help that situation.

The rear end pinion snubber may also need some "adjusting".
Here is my lowered Dacuda... I could go a little lower but as is, I can just get my slimest floor jack under it. (still have to lift the body a bit to slip the jack under it)
DD

I would like to drop it around 3" all the way around.