brake lines and bleeding ?'s

[don t. - 72gmc]

Woo-Who...wifes gone for the weekend and im actually making progress on my truck!!! Yesterday I finished r&r on the entire brake system, and suprisingly the new lines don't look bad (that bender really helped). I've bench bled the master, and its all set to make the final connection.
Q #1=>should I have used thread sealer? I've never had problems b/4 but??????
Q #2=>how do i test for leaks?

Im the only one at home, and I can't get a hold of my bro. How do you gravity bleed the brakes? He told me a long time ago how but I think you jack the front dr. higher than rest, bleed rear dr. first, rear pass, front pass then front dr. I've never done grav-bleed b/4. Its all level on jack stands right now.

Thanks for any help...don t. .....


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It aint gonna be a trailer queen, its gotta work, just like me.
3/4 ton,350 w/HEI, 79 q-jet, th400, Dana 60.