I bought a new brake master cylinder for my 79 Impala.
When I install it, I'll be using a Powerbleeder to bleed the system.

When using a Powerbleeder, do I still need to bench-bleed the master cylinder first before installing it on the car?

Thanks

Does your car have ABS?

never used a power bleeder, but im pretty sure you always have to bench bleed the MC

If his car has ABS and the complete system has air in it, he will need something to acvitate the ABS controller to bleed it.

Hence my question about ABS.

look again closely at the year

I guess this is the point where I point out it is a '79 Impala, as listed in the original post.

I would bench bleed it, better safe than sorry. With a lot of setups, the master cylinder mounts at a slight angle, and there is a high point usually with no way to get it out.

Just to be safe, I bench bled it.

Thanks for the responses.