I have a mud truck with a pretty powerful 466 in it. Last night when I was racing I could not foot stall the truck and get full advantage of the 2800 stall converter. The brakes are not very strong because of low vacuum (15") at 1000 rpm. The brakes are letting my truck creep through the staging lights and not holding me still.

My question is would a hydro-boost system be the best way to keep my truck still. I also saw a thread that had hydro-boost listed that would work from different vehicles.

77 ford f150

 

ever think of putting a trans brake on it?

 

I thought about it but my class wont allow it. If I put one on I will have to move up a class. Do you think hydro-boost will solve my problems.

 

I'm not to sure if it will or not. have you tried to put on a larger bore master cylinder?

 

Will changing to a different mc work when I have low vacuum

 

it should help. i don't know if you could just find a manual master cylinder vs. a booster type.. ideally you should find a large bore manual master cylinder.. than you would eliminate the booster and would never have to worry about the vacuum.

 

use a vacuum canister, you can find them from summit they are designed for EXACTLY this type of thing

 

Hydroboost is nice, but spendy. There are right ups around the net on how to do it. If vacuum is your issue hydroboost would cure it, but as stated before a vacuum canister may be the easy, low buck solution.

 

15 inches is quite a bit of vacuum. Are you sure that you have everything adjucted ok? The vacuum booster is only there to assist you and make it easier to push the pedal.The vacuum accumulator is not a bad idea, and is pretty cheap, but for vehicles with low vacuum troubles, the next best thing would be an electric vacuum pump.

 

i can tell you from experience the hydroboost was worth every penny! before i had manual brakes and trying to stop 39" iroks was a chore in itself. now, even with hydro assist and soon to be full hydro steering, i can lock up all four tires without thinking too much about it. which can actually be a bad thing, but i know the limitations of the truck. i happened to get extremely lucky and found a system in a local junkyard already pulled from a truck but the lines and mc and booster were all still connected! however after doing the upgrade i am willing to spend the extra cash and do the same thing to my powerstroke.

i dont know if it will solve your problem but it cant hurt. do you have disk brakes on the rear or drums? that could help a lot too! also, do you have line locks? in your situation they could prove beneficial! i have one on the rear axle and one on the front axle and i love it. its perfect for those times when i want to get out without shutting the bronco off and need to keep it from going anywhere.

-cutts-

 

Don't powerstrokes come frome the factory with hydro-boost? i know the 04 i drive for work does....

i never even thought about asking him about rear disks.....

 

Yes SD trucks as well as many others utilize the bendix hydroboost set up, however, these are late model units and fetch a pretty penny in the yards.
Hydroboost was available in chebbies for many years, and still are. It is painfully cheap to get a donor unit from a salvage yard and install it into a later truck.
Because of the number of available units and differences in pedal assemblies, you will want to buy as much of the unit as possible. You will need the plunger and all, I mean all of the hardware that is available. Trying to get these parts from the dealership after the fact is as close to impossible as it gets. Buy all you can from the salvage yard. ZFind a system that is as complete as possible, and throw it on. It is a decent upgrade, and will provide great braking.
Do watch how hard you push the pedal when the fluid is cold. Cold morning starts, and applying the brakes migh suprise you, and could have you eating the dash. Yes they work that well.
Upgrade your power steering pump too. This is a good time to do this.

 

yea they didnt start h-boosting until the superdutys. the mustangs of the same era have h-boost

-cutts-

 

15 inch is plenty of vacuum to work your pb, I don't see how a vacuum can will help. Hydro boost is great, and will take care of your problems, also disk breaks work way better in mud than drum.

 

Last week I just installed a hydroboost setup from a 99 f350 in my 73 and wow what a difference it was! I run rear discs with 44 swampers and I was able to lock up my rear brakes at any speed no problem. I'm still working that out when I plumb in a new adjustable porportioning valve. Best part was I got the hydroboost for $75.