Ford Truck Enthusiasts Forums - View Profile: 4wydnr

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  1. 1978f250cummins
    10-09-2016 06:17 AM - permalink
    Hello, my name is Sean and I hope you don't mind me asking a few questions about your cummins swap.

    I swapped in my 1989 6bt in my 78 f250
    Converted my c6 to a np435(from a 1978)
    every single part for the manual conversion from a 1978 f250
    Used very thick o.d marine grade 3/8 I.d for my vacuum line and a new check valve on the booster(my pump has two lines that t into one line that I assume goes to the booster, it was cut when I bought the engine)
    I kept my stock c6 brake booster, with the new manual pedal assembly.
    refilled the mounting hole on the brake booster rod that comes through the firewall, mounted my manual pedal to the automatic stock brake booster. Stepped on the brakes and blew a line.
    Replaced the line topped off the fluid but haven't bleed the line yet.
    I have a very stiff pedal that doesn't not stop the truck now.
    My brakes worked mint when it had the v8 but the truck sat a while til I did the swap.

    How did you fix your brake issues for your cummins?
  2. 77&79F250
    05-14-2013 11:35 AM - permalink
    Was I right on the poultry watering device guess?
  3. Shane Rinker
    05-07-2012 05:25 PM - permalink
    Shane Rinker
    Hi do you still have your DP Tuner for sale? if so what tune do you have on it & what year truck did it come off?
    Shane R
  4. 79ford_01powerstroke
    08-30-2011 08:59 PM - permalink
    hey man, i noticed we have some vehicles in common haha. but legit i am trying to drop a 6bt in my 79. i need much needed tips, how much itll cost what parts ill need. the whole 10 yards.. help please? my names zach btw

About Me

  • About 4wydnr
    N. IL
    2 Letter State/Province (use "--" for outside USA/
    Country of Residence
    Current Mileage
    150,000 - 199,999
    Miles per year
    10,000 - 14,999
  • Signature
    1977 F-250 4x4 5.9L Cummins


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  • Last Activity: 03-07-2017 09:03 PM
  • Join Date: 02-11-2008
  • Referrals: 2


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