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    1. Introduction Forum

      Welcome to the New BigMackTrucks.com Forums! Take a minute to create a new post here and introduce yourself. Tell us a little about yourself and your passion for old iron!

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    2. Truck Stories

      This is a forum for you to tell us about your truck's history! Every old truck has some type of story behind it and we would love to hear about it! Be sure to include photos if possible...

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  2. General Discussions

    1. Antique and Classic Mack Trucks General Discussion

      This is where you can talk about anything related to antique or classic trucks! If your topic is something specific, try to use the correct forum below.

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    2. Modern Mack Truck General Discussion

      This forum is for general discussions about modern Mack Trucks! Granite, Vision, Rawhide, Pinnacle...etc. Specific topics can be posted in the forums below.

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    3. Mack Dealer & Corporate Forum

      This forum is for Mack Dealers and Mack Corporate personnel only. If you are a Mack Dealer, or Mack Employee, PM the forum moderator below with your name and dealer code and you will be moved to the Dealer Group and be able to participate in this forum.

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    4. Mack Truck Q & A

      This forum is for pressing questions concerning Mack Trucks...emergency maintenance questions, pre-purchase questions, etc...answers can be rated by users and the higest rated answers will show first!

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    5. Mack on the Silver Screen

      This forum is for discussing various TV shows, commercials, music videos, songs and movies that had Mack Trucks in them!

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    6. Mack Scale Model and Diecast Corner

      All discussions about Mack scale model building and diecast models go here!

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  3. Specific Topic Forums for Antique & Modern Trucks

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      This forum is for engine and transmission related topics

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    2. Driveline and Suspension

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      This forum is for electrical, lighting and mobile electronics topics

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    5. Exterior, Cab, Accessories and Detailing

      This forum is for topics about exterior, cab, paint, trim, bumpers, emblems, visors and also topics about keeping that truck looking its best!

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    6. Fire Apparatus

      Forum for discussions about Fire trucks and specialized fire fighting equipment.

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  4. Odds and Ends

    1. Odds and Ends

      This forum is for non-truck related topics. Talk about interesting web sites, current events, tell jokes, post funny photos...etc.

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    2. Trucking News

      News and information from the entire trucking industry

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    3. Other Truck Makes

      This is the place to show off all your other trucks that are not Macks. They can be antique or modern trucks.

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    4. Tractors and Equipment

      This forum is for you to talk about Farm Tractors and other misc. equipment such as trailers, dozers etc.

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  5. Market Place

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    3. Feedback Forum

      Please leave feedback for other members you have done business with here. This will help members trust (or not trust) other members. Please be professional with your remarks...good or bad.

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    4. Transportation Board

      This forum is for posting and finding transportation opportunities for your antique hobby trucks and parts around the country. Please keep rates reasonable when posting a route...

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    5. Watt's Truck Center   (224,462 visits to this link)

      Click here to visit the Watt's Truck Center Home Page featuring The B-Model Store and tons of other parts for Antique and Classic Mack Trucks including R-Models, Super-Liners, DM's and all current models!

    6. Product Announcements & Group Buys

      This is the forum where we will post new product announcements and Group Buy Information from the B-Model Store! You can discuss them and/or ask any questions you may have here.

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  6. Shows and Events

    1. Truck Shows and Events

      This forum is for topics about truck shows and other events of interest.

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  7. Site Related

    1. Site Related Topics

      This forum is for BMT related comments, suggestions or problems.

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    2. BMT Wiki Support Topics

      This forum will hold the support topics created from the Wiki System.

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    3. Test Forum

      This is the place to practice posting photos or testing code. Topics may be removed at any time...

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  8. Club Forums

    1. Mack Trucks Memorabilia Collectors Club Topics

      This club page is for all Mack Memorabilia discussions

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  • Latest Posts

    • Geoff Weeks
      Finally some DM progress

      By Geoff Weeks · Posted

      For the tough one, take one of the other rims, wire brush it and put it gutter side up, put the trouble maker gutter side down on top of the cleaned rim, and work the tire off, down to the clean rim and out of the trouble maker rim. then slide off the cleaned rim.
    • Brocky
      Finally some DM progress

      By Brocky · Posted

      Mrs Mack, The man who made those swans is definitely an Artist!!! Especially on how he painted them..
    • Brocky
      Finally some DM progress

      By Brocky · Posted

      You are NOT supposed to quit until the job is DONE!!
    • Full Floater
      E6, setting injection timing via pulse adapter

      By Full Floater · Posted

      Well I got it to work.    Pulse adapter on cyl# 1 injection line and timing light set at 0 degrees, will give a pulse illumination at the crank dampener at the current injection timing.   I was illuminating 21-22ish degrees upon initial check.  This engine is a 26 degree engine.  (this was after spill timing as close as I could, but I felt that it was a little retarded due do some blue exhaust haze at idle and most notable when cold) Shut it off and moved the pump flange counter clockwise a couple times till I got it smack on 26 degrees.   No more blue haze.  So either I didn't spill time it correctly or the spill timing is not quite as accurate as it could/should be.  But Im happy to be able to check and adjust timing, without removing an injection line/delivery valve, as this way is just less invasive and quicker.
    • Brocky
      Gold Bulldog

      By Brocky · Posted

      You all are "City Boys"!!! Until the early 60's we had a single crank phone in the house. A big black box on the wall that had an ear/mouth piece like you dial phone. 12-15 party line and you heard every bodies ring!! Our neighbor still had the taller rectangle  box with the mouth piece on the front and the ear piece on a cord..
    • jervn4
      R model Dashboard Repair

      By jervn4 · Posted

      Curious if anyone has gone through the paces of repairing a R model dashboard, Its the original Dash out of a 1973 R600 That my schools restoring. Its got a few chunks missing out of it and has padding showing in a few spots, Wondering if anyone has ever recovered one of the padded dashes and if it works well or not before we go through the motions of doing it. Any inputs appreciated.
    • Geoff Weeks
      Cummins "Low flow" system, in a nutshell

      By Geoff Weeks · Posted

      I used a low flow in heavy-haul, and the company I was leased to had many low-flow in heavy service.  As I said, it returns some real gains in fuel mileage.  Originally, I had a 1500 sq-in radiator and it did ok pulling boilers (high wide and heavy) but there was little "extra" to spare. Both of my trucks I upgraded to fit 1800 sq-in radiators and never had a problem.  Coolant filters, SCA's and keeping up on maintenance is important. That holds true if you have a conventional cooling system. My take is the fears are far overblown. If you are going to let cooling system degrade, try and fix with "black pepper and a raw egg",  in the cooling system, you are going to have problems. I have met with those that have opted for that method then complain when there are problems, and blame low-flow. Radiator cores cost more, and require more skill to assemble, to get the divided bottom take sealed.  Like anything "different" from what people are used to, it can cause people to say it is bad.  If you are going to push engines to high Hp, beyond what the factory made, it can be hard to cool, regardless of cooling system type.  Fact is: air to air beats all work around's.  I will not say low flow beats all, it does not. I also wouldn't pass on a good truck because of it. It went away about 35 years ago, and was only used for about 3-5 years. That makes it odd, but also Cummins was a big player and made a lot of truck engines. 2 stroke Detroit's were on the wain, Series 60 had some teething pains, and Cat would only go to 400 hp with water cooling, if you wanted 425 or 475 you had to have air to air and the limited which trucks could install one in. Cummins offered the 444 that could be fit in any truck.  Mack did what they did in their own, but that was limited to Mack brands. If I were building a Big Cam today for a more modern chassie, I would convert to air to air like a N-14 is.  I had a Big Cam 1 built in 1979 I had a Big Cam 3 built in 1983 I had a Big Cam 4 built in 1986 or 87 I had a NT88 built in 1988 By the 90's the N-14 was out at least in mechanical versions. The Low flow was only Big Cam 4 and NT88's which is about a 4-5 year run. There are very few people around that had enough experience with them, today or even at the turn of the century.  I just happened to be around in the time frame when they were thick on the ground. The L-10 also used the same system (call Optimized Aftercooling ) or OAC in the same timeframe.
    • Mark T
      Gold Bulldog

      By Mark T · Posted

      I remember seeing them. Holy cow, forgot all about them. 

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    • 1925 Mack AC Bulldog 4 cyl

      1925 Mack AC Bulldog 4 cyl  »  Truckcrazy

      Hi,
       
      I see you responded to my post on 1925 Mack AC Bulldog. I posted pictures and I'm located in Indiana.


      · 0 replies
    • Meezy237

      Meezy237

      What’s this frame grab handle called or does anyone know a part #
      · 0 replies
    • johnbor

      johnbor  »  Ryon Hess

      did you ever find a soultion why your clutch was sticking in gear?
      · 0 replies
    • Joey Mack

      Joey Mack

      https://www.ebay.com/itm/335977440629?_skw=mack+e-tech+engine+book&itmmeta=01JWA20VWGWWKW84MXA7SPSVRS&hash=item4e39d0e575:g:fUEAAOSw~n9ncrwC&itmprp=enc%3AAQAKAAAA8FkggFvd1GGDu0w3yXCmi1dw4WewTekYgqfyNRuEV27xatvWtbt3pHWRVGQe1%2FuiJa1RXu7clyGRSUOQsiJw2vkNZsCj2oCM0P%2FFfzicknbJ1jIfvRTaeEwAuEcAvnENHMOemQfy4z6CxAOg99H0CnBQ9VW5EziMtlSRPRkvE81SM8Z%2FUbIxgXyjlUqWNlPuqLRMliIAbmsBP3PTti0ZA8IFxHf9n2peaIf5BC4NH3pXsXiboMiV%2FMHZZWAulEsSdv3ivPWd6jwPksv6HdtaD5SBBgzXSe4hxqy9vF2g39rCKjthzr7%2FBmBw7UN0Qu2Jbw%3D%3D|tkp%3ABk9SR7C-g8LiZQ
      Stoneandsteel... You need this book!
      · 0 replies
    • down4glamis

      down4glamis  »  Mike6024

      Hey Mike! Sorry to bug ya on here, I just bought a pallet of wine in Napa and think you may have done the same. I bought the blue label and it said you won the yellow label. I was wondering if you would be up for trading a few cases so we arent stuck with so many of just 1 type of wine?
      · 0 replies

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