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1973 - 1979 F-100 & Larger F-Series Trucks Discuss the Dentsides Ford Truck

Hydroboost conversion done!

 
  #61  
Old 08-06-2009, 02:44 PM
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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I see you are working on a 2wd. I have a 79 4wd crew and my booster looks like this


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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
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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
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Originally Posted by Bullitt390 View Post
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
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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
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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.
 

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