Hydroboost conversion clarification

[NaturalSnapple]

Hello all,

I'm doing a hydroboost conversion on my 71 with manual brakes. I have a hydroboost/master combo that I pulled from a 90's 2500 Van that had front discs and rear drums, just like on my C10, but there was no proportioning assembly.

Can I run this master without an additional proportioning assembly since the van it came off of was disc/drum just like my C10?

[demian5]

Did it go through an ABS module? If so, that was the porp valve.

I'd swap the master to an older style.

[NaturalSnapple]

It didn't look like it. The hard lines connected to the master ran directly under the van along the firewall area, and there wasn't any other module in between.

Edit: Could I use the prop valve off of my manual brake assembly?

[Bigdav160]

I don't see why not.

The van might have had the ABS module underneath. There's not much room in the engine compartment.

Which fittings are you using for the hoses?

I need to start on my conversion soon.

[NaturalSnapple]

You're right, it may have been underneath the firewall.

I plan on using a later-year power steering pump so that all the fittings are metric, and then have my local hydraulics shop make the lines for me. I don't have power steering (yet) so this takes a lot of the guess work out of it.