Big Block Radiator Hoses

Big Block A body Tech

  1. Jeff Clay

    Jeff Clay Well-Known Member

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    Hey guys I need you help. I installed a big block in my 70 Dodge Dart with a new Gerst front suspension. I have a new 22 inch champion radiator with the inlet on the passenger side and the outlet at the bottom driver side. I'm struggling with finding upper and lower radiator hoses that fit properly. Anybody out there that has fought this problem and has the answers using rubber hoses? If so, could you provide part numbers and manufacture. Would appreciate any help I can get on this issue. Thanks A-Body friends...
     
    Last edited: Oct 7, 2017
  2. Dubob

    Dubob Well-Known Member

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  3. famous bob

    famous bob mopar misfit

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    I ended up w/ hoses for a 69 big block roadrunner on mine , if I remember right.
     
  4. Daves69

    Daves69 Well-Known Member

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    Trimmed a Dayco 71281 radiator side to fit a stock 26"....
    upload_2017-10-7_9-10-43.png
     
  5. Jeff Clay

    Jeff Clay Well-Known Member

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    Thanks for your assistance. My radiator is a 22 inch and not sure they would work. Thanks again...
     
  6. Jeff Clay

    Jeff Clay Well-Known Member

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    My radiator is a 22 inch. Not sure it would work for my application. Thanks again...
     
  7. Jeff Clay

    Jeff Clay Well-Known Member

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    Is your radiator a 22 inch?
     
  8. 70Duster440

    70Duster440 Well-Known Member

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    From my response to your question in another thread:

    What I originally did was go to a parts store and order up a couple of different hoses for a B or C-Body application with big block. Test to see which fit the best and return the unused.

    It's been a long time but I believe the upper may have been a Gates 20875 or Dayco 70352 and the lower a Dayco 70592 or 70369 (Maybe Gates 20558 or 20630). The latter of the two Dayco has tighter bends. Depending on what radiator you're using (these would have been for a stock type 22") some will fit better than others but in all cases some trimming to one end (usually radiator) needs to be done. I do it on a table saw for a nice clean, square cut.
     
  9. draginmopars

    draginmopars Well-Known Member

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    don't have the numbers, used a 73- 400 plymouth fury hoses
     
  10. AndyF

    AndyF Well-Known Member

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    Aren't the original hoses available anymore? Seems like you could just ask the counter guy for hoses for a big block A body car.
     
  11. jas0162

    jas0162 Well-Known Member

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    I bend a welding rod to the correct shape I need then go in the back of the local napa store and grab a hose off the wall that matches it.
     
  12. Jim Lusk

    Jim Lusk Well-Known Member

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    That only works if you know the radiator has the inlet and outlet in the same place as the factory radiator for a big block A-body.
     
  13. AndyF

    AndyF Well-Known Member

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    OP radiator sounds similar to stock. Inlet should be the same, outlet might be different depending on if the stock was in the center under the cap or if the OP has a cross flow radiator.
     
  14. thanson_mopar

    thanson_mopar Well-Known Member

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    Hey Jim, unrelated to radiators but tried sending you a message about control arms but your inbox is full. Could you send me a message? Thanks
     
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