hydro-boost suggestions

[565bbchevy]

Texas82gp I am sure you are probably right about pedal feel but I would think many people look into some sort of upgrade after they have installed a larger cam and then realized they had little to no brakes, a vacuum canister can help but this pump is a relatively easy fix for this kind of scenario that does not require changing anything in your current brake or power steering system.
For many people they look at the hydro-boost because it might be the only thing they hear about and some will be intimidated by the plumbing and parts changeover involved and there are some complete kits out there but are by no means cheap..
For me I had great stopping power with the Wilwood 4 piston rears but had a problem when sitting in traffic and that is now resolved.

 

[565bbchevy]

Quick random question.....would one of those vacuum pumps work the same way the aftermarket ones do for piston ring sealing? I know you would have to plumb it up to the valve covers but do u think it would work the same?

No, this was designed as a vacuum pump for brakes only, there is no source for it to pull vacuum from since it creates it own.
A crankcase vacuum pump is not only designed to pull oil mist out it is designed to pull it through the pump and send it to a separator or a breather and with 28 lbs. of vacuum in your crankcase with this pump it would probably suck everyone of your gaskets in since it needs to be regulated to around 10 lbs.
I have been asked that many times at car shows why I would need to have two vacuum pumps.

 

[565bbchevy]

83MONTESS I think you will be fine with a header evacuation system on your 496 BBC when I built my 496 BBC it had 13 :1 comp. Dart heads and a solid roller at 714, 680 lift and at that time I was still using Hooker Super Comps and ran a Moroso evac set up on that and it worked well it was not until I built my 555 BBC and went with Lemons Headers with stepped 2-1/4" to 2-3/8" primary tubes that the Moroso set up became no longer consistent and that is when I went with the crankcase vacuum pump.

 

[Texas82GP]

565bbchevy, l totally agree with your sentiments that the vacuum pump is a good solution for someone with a big cam. I would think it much easier than a hydroboost swap. If I'm not mistaken, Longroof has a relatively mild cam so I don't think lack of vacuum is his issue, rather he is looking for better pedal feel. By the way, your car is amazing. So much killer work to be proud of.

 

[Texas82GP]

Jack,

I'm sure you know this already but a good way to firm up the pedal is to tighten up the adjustment on the rear shoes. I run my rear shoes on my Sierra a tad on the tight side and adjust them periodically to keep them snug as I like a firm high pedal.

 

[Longroof79]

Jack,

I'm sure you know this already but a good way to firm up the pedal is to tighten up the adjustment on the rear shoes. I run my rear shoes on my Sierra a tad on the tight side and adjust them periodically to keep them snug as I like a firm high pedal.

Thank you, Jared.
I'm probably due for a rear brake adjustment anyway. I have on occasion adjusted them, and it does firm up the pedal some. I would also adjust them to the point that they drag a bit.

 

[tobyp]

I vote for having a HB setup from the Gbody with a reman unit from Cardone. I have a Jones racing pump, all coverted AN lines, PSC 32 oz res and this thing has the best brakes I have ever felt. Push on the pedal 1/2"...brakes apply and they apply now. Most of us with turbo applications like the idea of having 2000 psi to hold boost (in my case 15lb) before the brakes let loose.

 

[drogg1]

Vacuum pump:
http://www.cardone.com/Products/Product-Detail?productId=641008&p=rock&jsn=758&jsn=758

and pulley:
https://www.rockauto.com/en/moreinfo.php?pk=1990076&cc=1126921&jsn=766

Together with no core is $87.93 + shipping from RockAuto. That's cheap enough for me to definitely consider when I put my engine in this summer. The cost of creating a bracket and figuring out how to turn the pulley will be minimal I imagine. I will post the dimensions of the bracket if I make one if somebody else ends up doing a sbc.

 

[565bbchevy]

Together with no core is $87.93 + shipping from RockAuto..

I think I might have overpaid when I bought mine but they did not really want to part with it since it was on a running engine with "no parts off engine " spray painted on the hood.
Another thing to consider is my vacuum pump pulls 28 lbs. of vacuum and from I have read even a typical bone stock SBC only pulls around 20 lbs. so that is a pretty significant increase over stock which might be why my car stops so well.

 

[Longroof79]

Guys, I appreciate all your input. This topic became very interesting and informative. I was never aware of other options, such as vacuum booster pumps, etc. However, I have heard about electric vacuum pumps, yet never knew anything about them. I've certainly gleaned some good information, and explored other options on this thread. Thank you all!..love this forum.