1973 - 1979 F-100 & Larger F-Series Trucks Discuss the Dentsides Ford Truck
Sponsored by:
Sponsored by: Moser

Hydroboost conversion done!

Thread Tools
 
Search this Thread
 
  #61  
Old 08-06-2009, 02:44 PM
Bullitt390's Avatar
Bullitt390
Bullitt390 is offline
Certified Thread Hijacker

Join Date: Aug 2001
Posts: 14,433
Received 48 Likes on 34 Posts
Ahhh... I see said the blind man.

Looks like the Chevy booster I posted has a pushrod as long as the 2001 Superduty.

As for my pedal, I couldn't possibly come up anymore, the brakelight bracket is almost right against the stop. Unless One were to drill a new hole in the pedal for the pushrod bolt.

Josh
 
  #62  
Old 08-06-2009, 03:51 PM
ChaseTruck754's Avatar
ChaseTruck754
ChaseTruck754 is offline
Lead Driver
Join Date: May 2007
Location: Costa Mesa, CA
Posts: 6,981
Received 11 Likes on 11 Posts
you can always weld a piece of 1/4" (maybe 3/8" - however thick the pedal is) piece of plate on the front of the pedal with a hole in it is well. This would allow for the longer pushrod and no spacer...
 
  #63  
Old 08-06-2009, 05:47 PM
ford390gashog's Avatar
ford390gashog
ford390gashog is offline
Fleet Owner

Thread Starter
Join Date: Jan 2004
Location: Brentwood,CA
Posts: 26,006
Received 519 Likes on 398 Posts
If it is any help to anyone I called the local ford dealership you can get the F-450 mounting bracket new for 32.00 plus 9.00 for the nut.
 
  #64  
Old 08-06-2009, 05:51 PM
ChaseTruck754's Avatar
ChaseTruck754
ChaseTruck754 is offline
Lead Driver
Join Date: May 2007
Location: Costa Mesa, CA
Posts: 6,981
Received 11 Likes on 11 Posts
Figures - stealership price = $32 for a $1 piece of steel with some holes in it. Not that I would ever waste $$ on buying something from a stealership that I can make myself, but for others it might work
 
  #65  
Old 08-06-2009, 10:22 PM
shadowviper12345's Avatar
shadowviper12345
shadowviper12345 is offline
Senior User
Join Date: May 2009
Location: North Carolina
Posts: 228
Likes: 0
Received 0 Likes on 0 Posts
so can you use the stock p/s pump or do you have to use a pump off the f-450?
 
  #66  
Old 08-08-2009, 03:29 PM
dethomson's Avatar
dethomson
dethomson is offline
Senior User
Join Date: May 2008
Posts: 230
Likes: 0
Received 1 Like on 1 Post
You have to use a P/S pump that is has two returns. One comes back from the P/S box and the other from the hydroboost. If you are getting stuff from a donor truck, it's best to pull everything including the P/S pump. Get the hoses, brackets, and P/S pump. That's what I did when I pulled mine out of an '88 F450. The F-450 M/C is too much and I will be switching back to a '78 F-350 M/C sometime soon. I hear the F-250 M/C works well though.
 
  #67  
Old 08-08-2009, 03:52 PM
ford390gashog's Avatar
ford390gashog
ford390gashog is offline
Fleet Owner

Thread Starter
Join Date: Jan 2004
Location: Brentwood,CA
Posts: 26,006
Received 519 Likes on 398 Posts
You don't need a new pump. You can do 2 things get the plastic reservoir with 2 return ports or just put a T fitting on the stock return line. GM used the T fitting and ford used the dual return reservoir. The choice is yours.
 
  #68  
Old 08-08-2009, 04:34 PM
ranger429's Avatar
ranger429
ranger429 is offline
Logistics Pro
Join Date: May 2003
Location: Northern Illinois
Posts: 4,234
Likes: 0
Received 15 Likes on 14 Posts
Excellent write-up gashog. I think I'll do the hydroboost to the crew before I'm done with it.
 
  #69  
Old 08-09-2009, 03:46 AM
ford390gashog's Avatar
ford390gashog
ford390gashog is offline
Fleet Owner

Thread Starter
Join Date: Jan 2004
Location: Brentwood,CA
Posts: 26,006
Received 519 Likes on 398 Posts
Still just did not have the right pedal feel, well I got that fixed!I replaced the front two rubber lines and the rear rubber brake line with custom made stainless braided line. huge difference in response and pedal feel! I had all the lines custom made at a local truck service center. The really expensive part was the rear because the hose is part of the line block that bolts to the axle housing. I ended up reusing the stock block but machining and threading it to accept the new line. All in all for 127.00 i'm happy!
 
  #70  
Old 08-09-2009, 08:23 AM
Scot's Avatar
Scot
Scot is offline
Laughing Gas
Join Date: Nov 1999
Location: 15 miles west of Venus
Posts: 953
Likes: 0
Received 2 Likes on 2 Posts
I ended up having to shorten the push rod about 1" or so. I just cut it in the middle, beveled it and welded it. No damage to the unit.
 
  #71  
Old 08-10-2009, 12:10 PM
68bronco79crewcab's Avatar
68bronco79crewcab
68bronco79crewcab is offline
New User
Join Date: May 2009
Posts: 17
Likes: 0
Received 2 Likes on 1 Post
I see you are working on a 2wd. I have a 79 4wd crew and my booster looks like this


Name:  7BRKBOOSTER.jpg
Views: 4448
Size:  18.1 KB.


I see the rod coming out of your booster is straight. Would this be a problem with the F450 hydroboost booster??
 
  #72  
Old 08-10-2009, 02:10 PM
Bullitt390's Avatar
Bullitt390
Bullitt390 is offline
Certified Thread Hijacker

Join Date: Aug 2001
Posts: 14,433
Received 48 Likes on 34 Posts
Vacuum boosters bolt onto a firewall bracket which then gets bolted to the firewall. The bracket has it's own rod assembly that attaches to the pedal. The booster pushrod is bolted to the bracket rocker.

Josh
 
  #73  
Old 08-10-2009, 03:24 PM
68bronco79crewcab's Avatar
68bronco79crewcab
68bronco79crewcab is offline
New User
Join Date: May 2009
Posts: 17
Likes: 0
Received 2 Likes on 1 Post
Originally Posted by Bullitt390
Vacuum boosters bolt onto a firewall bracket which then gets bolted to the firewall. The bracket has it's own rod assembly that attaches to the pedal. The booster pushrod is bolted to the bracket rocker.

Josh
I might be misunderstanding your statement.

The booster bolts to the bracket and the booster pushrod bolts directly the pedal in my application. No rocker bracket or pivot point.

My 68 bronco has a pivot point behind the booster bracket.
 
  #74  
Old 08-10-2009, 05:29 PM
68bronco79crewcab's Avatar
68bronco79crewcab
68bronco79crewcab is offline
New User
Join Date: May 2009
Posts: 17
Likes: 0
Received 2 Likes on 1 Post
So looking around today I found a complete Hydroboost F450 Setup but it is a diesel. I assume that the booster and lines are the same but what about the pump. Do you think It might be able to be retrofited onto a 460 with L&L Brackets???
 
  #75  
Old 08-10-2009, 07:22 PM
dethomson's Avatar
dethomson
dethomson is offline
Senior User
Join Date: May 2008
Posts: 230
Likes: 0
Received 1 Like on 1 Post
I also pulled mine out of an F-450 and it was a direct bolt-in, except that I made brackets to mount the booster to the firewall and had to rebend the lines a bit. I currently have a 351M and the pump bolted right on my current P/S bracket. I don't know anything about the L&L bracket, but I would expect the pump would bolt up fine to it too.
 


Quick Reply: Hydroboost conversion done!



All times are GMT -5. The time now is 12:55 PM.