looking for a little more HP: Big Cam 400 NTC BC3

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by sodbuster59, Mar 24, 2022.

  1. 201

    201 Road Train Member

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    high plains colorado
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    Crimp the fuel return line,,,don't laugh, one of my 1st trucking jobs in the 70's, ran BC's and part of the PM was to check the return line, I'd say, 90% of all the trucks I drove had a BC. You'll never get the power out of a BC like a Cat or new Detroit, without blowing it to smithereens, SO, do like I did, baby that sucker, and 400grand EASY, no problem, and sit back and let "The Columbus Vibrator" do all the work.
     
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  3. kranky1

    kranky1 Road Train Member

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    Lots of those in the Patch running 215-220psi and those things are abused from the minute they start them. Operator is a big factor in whether they live or not but I think application plays into it too. The guys I knew with BC3’s in train tractors had temperature issues with them from day one at factory settings. Cooling system on the 3’s didn’t seem to be up to really high load factors. They ran hotter than my Cats did. Makes me wonder if it was oil temp as much as rail pressure wiping out the cams. Never heard about temp and cam issues with the 1’s and 2’s in train tractors.
     
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  4. RockinChair

    RockinChair Road Train Member

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    That's one of the best looking FLDs I've ever seen. Congratulations on the new ride!
     
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  5. sodbuster59

    sodbuster59 Bobtail Member

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    D2007F41-D2B5-4D5E-B64F-2AB68771F1AD.jpeg Took forever to get her home, finally…

    Found out today it has 3k mi on new “generic bone stock” aftermarket injectors. 595.99 for the set of 6. Yippee skippy :-( they think they might be dual barrel tho?

    took some pics of the engine bay

    smokes pretty good cold, but starts runs shifts drives nice!

    thoughts?



    D2007F41-D2B5-4D5E-B64F-2AB68771F1AD.jpeg
     

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    Last edited: Apr 13, 2022
  6. W923

    W923 Road Train Member

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    Bet you’re glad it’s in your yard now…been there done that.
    Looks nice and clean in general
    Kinda interesting that it’s got an old style canister fuel filter
    That turbo can’t be to old either
    I still think the air to air is worth it I have done it to both a big cam and a small cam and It made a difference in how they pulled. Exhaust temp also came down to until I added more fuel. I know it was mentioned that they are made to run on warm air and I would agree that the trucks I have switched smoke a little more when idling in the cold but it’s no worse than my 290 with no cooler. Never know on the aftermarket injectors might be great or might last a couple runs
    Did they say what brand
     
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  7. sodbuster59

    sodbuster59 Bobtail Member

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    You bet! I bought it on a friends voucher for the seller, site unseen, so when it turned out to be better than advertised I was happy beyond belief. There's STILL honest folks out there!!

    I'll have to call spencer diesel to see if they can track that down, but I thought I'd wait to bother them till my buddy can open the pump to see how it's set.

    Running warm is one of the things I'm thinking I want to be proactive on, so regardless what happens, if I push more fuel to it, I'm budgeting $ to keep it running overly warm. On the fuel filter, I'm toying around with installing one with a see-thru element, but they're not bashful about charging for them either!

    I've got a few weeks of hauling corn once the crop is planted so will see how it pulls before getting radical.

    Thanks!
     
    Last edited: Apr 13, 2022
    Reason for edit: spelling
  8. W923

    W923 Road Train Member

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    I run one just like that one
    It’s paid for and works fine I ended up putting a metal bowl on mine because the plastic one cracked and couldn’t seem to find a replacement
    Might just check fuel pressure first
     
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  9. jamespmack

    jamespmack Road Train Member

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    Ehhh, great points made here. BUT Seen NTA420 small cams live well at 295lbs of fuel pressure.

    Its on you as a driver, I'd install a HT60 turbo, 3° degree retarded key way, 2450rpm gov setting. BIGGEST supply lines you can afford, no 90° fittings. 30% over stock on pump and install a boost and pyro gauge. Drive it off the gauges and like you have a egg under the pedal. Still perk it up and be affordable if you keep your foot out of it.
     
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  10. jamespmack

    jamespmack Road Train Member

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    OH BTW a 1800 rpm, you best be looking for another gear. Do not lug it.
     
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  11. W923

    W923 Road Train Member

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    I think those are really free flowing injectors
    I have a set I was thinking about putting in my w9 but not real high on my list
    I also have mine set for 2500+ rpm to get full fuel to 2200 makes a big difference
     
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