Master cylinder/booster on 440 Duster

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Muswagon

Muswagon

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This is essentially the kit I bought, silly me I had never dry fitted it with engine in.

It's tight just to move it around in there, and I think it might hit the valve cover when fully bolted in.

Is anyone else using this with your 440? If not, what system are you running? I am not opposed to manual brakes but would like to avoid

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Not doubting that at all... There was just no need for it after the word cylinder
 
I bought mine with the 440 already swapped in. Manual disc brakes. Have not tried to haul it down from triple digits yet but has stopped fine from every other situation.
 
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496 polara said:
I bought man with the 440 already swapped in. Manual disc brakes. Have not tried to haul it down from triple digits yet but has stopped fine from every other situation.
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Thank you, I ordered one just now. still going to try and make the power work but it looks very doubtful, might as well try as i am 1.5 years too late to return
 
So it might work assuming you're running stock style heads and valve covers. TrickFlows are about 1/2" taller than stock style heads and cast/fabricated valve covers are pretty tall compared to the old stamp steel ones. Personally I can't tried to use a vacuum style booster BUT the TF Heads and cast valve covers are causing me a ton of headaches with the hydroboost I'm installing.
 
Isn't there some offset thingy for booster
 
He may be able to use a 4 bolt offset master. Reason I say this is because a regular manual 4 bolt master will bolt on where a power booster was. So I don’t see why it wouldn’t work. Kim

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If you do your math correctly with master cyl displacement and pedal ratio , manual brakes will stop it fine.
There are several on line calculators to help. 180 MPH road coarse cars do not use power assist.
 
Machine man has a good point. I have a 440 in a 69 Dart and used an Eci kit which uses just a manual master cyclinder . The front are disc brakes and rear are 11 1/4" drum brakes which work fine . One thing I would change is the master cylinder to a Dakota style master that utilize a plastic reservoir with thread on caps ( no dripping or leakage from lid) .
 
Not exactly what your asking but here is a 400 with trickflow heads and cal custom valve covers.
I run a 1 1/8 bore master from a 90s dodge ramcharger (dorman M98894) and hydroboost from a 2000 ish diesel ram.

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Mine was originally a front disc (kelsey hays) but manual brake car, so I ordered this master which appears to be for that type of application. I am running all 73 Duster big bolt stuff now. I played around again yesterday with my power kit, and it may clear but just barely. There is alot of adjustment on the 4 mounting slots, tons actually, so as long as it does not bind up too badly against the grommet I might be ok... Either way if the 1" bore master works I have a backup plan


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