Astro Hydroboost question

[HillbillySailor]

I posted this in the Car Craft forums (since they just did an article on this), but only got a couple of responses...

I snagged an Astro Hydroboost and Master Cylinder and plan on installing it in a 70 C-10. I'll also be converting the front brakes to disc. My question is this. Should I buy a proportioning valve that would've originally came with a 71-72 C-10 with disc brakes, or use the proportioning valve that came with the Hydroboost and Master Cylinder? Any help would be appreciated. Thanks!

[Tazracing]

Re: Astro Hydroboost question

I posted this in the Car Craft forums (since they just did an article on this), but only got a couple of responses...

I snagged an Astro Hydroboost and Master Cylinder and plan on installing it in a 70 C-10. I'll also be converting the front brakes to disc. My question is this. Should I buy a proportioning valve that would've originally came with a 71-72 C-10 with disc brakes, or use the proportioning valve that came with the Hydroboost and Master Cylinder? Any help would be appreciated. Thanks!

the one for the 71-72 disc brakes
I'm doing the same thing..
only I found my set up on a mid 80's 4 by4 oil burner..
http://67-72chevytrucks.com/vboard/f...splay.php?f=92 has a ton of info on this in there faQ's area

[HillbillySailor]

Re: Astro Hydroboost question

Thanks Taz. I was pretty sure that it would be the one for the 71-72 C-10's, but I thought I'd ask since we have some GM techs as members. Looks like I'll be ordering that from LMC Truck.

[Tazracing]

Re: Astro Hydroboost question

Thanks Taz. I was pretty sure that it would be the one for the 71-72 C-10's, but I thought I'd ask since we have some GM techs as members. Looks like I'll be ordering that from LMC Truck.

73-87 works also, if your crawl'n around a junkyard

[rightpedal]

The one in my 69 blazer came off a 80's gm 3/4 ton and worked great. It had the same numbering as one my shopmate had on his factory gm 1 ton hydroboost system.

Steve

[CDMBill]

If you plan other brake or tire and wheel changes downline it might be worth it to use an adjustable proportioning valve now instead of a fixed factory style unit.