Speed

Well,I'd like to add a little more lighting,but mainly for safety,not glitz.I'm thinking Halogen headlights,maybe a couple of road lights,a pair of stoplights,a back up light,and possibly a marker on each side at the corners of the truck. That's pretty much it. Thanks for the explanation,Greg! Speed

Painless does a pretty good wiring harness. Popular with the hot rodders and custom car builders. Their prices are pretty reasonable too,and if there's a problem with getting something to work,they have good tech assistance. Speed

Freightrain; I'd be happy if ANY of my truck looked that good!! Beautiful work,Barry-your pride in workmanship shows!

This is from a different vendor,but you might wanna check it out anyway. It's pretty cool,and it's for a MACK!!! Ebay Item # 260063855432 Speed

Thanks John! WOW-you sure have good info on this ol' truck. I just didn't know what kinda juice the generator'd provide. I ran the stock generator on my '57 GMC for a buncha years with no problem,but while pulling my 35 foot RV trailer down from Caldwell,Idaho,it went toes up and made my life a little bit of hell;couldn't find anything to replace it until Elko,drive a ways,stop and have ranchers charge the battery for a couple hours,go some more,etc.,so since the engine was expiring anyway,I just changed it all out.That GMC was too modified to restore anyway. Trouble free since then. What's chicken lights? Thats a new one on me. I'm wanting to run Halogen headlights(can't have TOO much light!),and I guess I COULD set it up with six volt ones,but they be hard to get on a Sunday night in Podunk suburbs.'Course,now that I think about it,wouldn't be that big a deal to carry a SPARE one...DUH.. Speed

Maxidyne237; Thanks for letting me know that. Since my 10.00-20's are still okay,I'll go ahead and hang with them. I guess the next possibility would be re-gearing the rear end.(How far before and after this truck are the punkins interchangeable??) BUT-I'll wait until I can run it out and see what I'm working with before I worry about that. On my cars and pick ups,I've always used taller tires as a way to improve my road speed/rpm situation,but in the big truck world,it appears the options are a lot more limited. There are still options to look into though. For now,I'll concentrate on learning about Mack EH's and pulling a plan and design together to get a good flatbed and boom built for my truck. (THAT oughta keep me busy for a few days!) Thanks again for your input,guys! Speed

Hi,all; I'm trying to find out more about the flathead six gas engine in this '40 EH I bought. Anybody know what engine should be in it? It appears to be original,or a bolt-in conversion,from what I could see. The truck's titled as a 1940,but looks more like maybe a '38. Did they have the same engines? I'd like to know about its displacement,what its redline is (I'm assuming the gas engines also redlined at 2,100 rpm's.) What kind of performance did these engines provide? Strong? Gutless? What was typical oil pressure for a good engine? Being a gas engine,I plan to run Castrol 20/50 oil in it;I've run it in all my other cars,trucks,and bikes. Is that suitable,or would something else be a better choice? Also,would this be a positive or negative ground system? At the risk of offending the purists among us,I intend to install an 85 amp Delco alternator,wired the RIGHT way,so I can upgrade the lighting and install an electric fuel pump. Thanks for tolerating my ignorance of the Mack Trucks world. I'll try not to be too much of a nuisance. Speed

Hi,all; I posted on this subject in General Discussion,but decided it probably belongs here. I would like to know a little more about the flathead six gas engine in this '40 that looks like a '38 EH I bought. I'd just go look if I was about 300 miles closer to it. Anyway,what displacement would it probably be? (The truck appeared to be original,but I don't know what engines could have been swapped in without mods,so Was redline on the gas engines also 2,100 rpm's? Assuming good running condition,what's a safe upper cruise rpm for it? I'm asking this because I was told that,for instance,a Cummins should be run at around 1,800,and a Detroit likes to run WFO,so I wanna be sure of what I'm subjecting this engine to. (I'm taking the Detroit comment with a grain-o-salt...) And how were they known to behave as to performance-powerful? gutless wonders? You'll hear this from me a lot-I can't wait to get this truck home!!! Speed

Bulldog man; It might be worth picking up a bunch of those and re-selling 'em through the site-I'd wager there'd be plenty of markey for 'em. About the only thing I have close by is a Flyin'J about 50 miles away and a Pilot about 20 miles out. Up here,it seems like unless you run an air-shift,there's nuthin' for ya. Speed

MadMacks; Thanks for the info-it looks like about the only advantage to going to 22.5's would be availability of tires and better handling. The current tires are pretty good,so it'll probably be awhile before a change is necessary. Freightrain; Thanks for sharing that-it's proof that the wheels will fit. Did it change your road speed any? Sounds like the two sizes are so close to the same height it probably didn't make a difference there. Speed

Thanks Thad; Cool-so theoretically I could upsize to 22.5 inchers,tubeless. Guess next I need to find out what size 22.5 would be substantially taller than the 10.00-20. I'm not very familiar with the OTR truck tire sizes-my trade was car/light truck tires. I'm trying to back-door a little more mph and less rpm,even though I don't know for sure yet that the stock mill will have enough suds to carry it... Speed

Hi all; Another newbie question for ya. I'm wondering what size wheels are available for a 1938-40 EH. It has 10.00-20's on Daytons now,but are all Dayton hubs the same size as far as the wheel size that will fit? Are Daytons available as 22 or 24.5,and could they be used on this old truck? Thanks for your patience-I'm learnin' as fast as I can... Speed

I'd have to say it depends on the amount you need and your credit. If it's not an un-godly amount of money,you might be able to swing a signature loan-that's how I bought both of my Harleys;of course THAT was back when I still had credit... The reason for that,at the time,was because using a loan that was non-specific,I didn't have to tell the bank what I wanted to use the money for,and I was able to go with less expensive insurance than their required full coverage,keeping my payments about a third lower. If you need a larger amount,you might see if you have any close friends or relatives willing to co-sign or put some property or a newer vehicle on the line as collateral. Also,in some truckers' magazines there are advertisements for sales brokers who specialize in this kind of situation. Probably couldn't hurt to check into that option. Best of luck with your purchase! Speed

Thanks,Barry; I'm waiting for the current owner to find his papers on the truck so he can email the VIN,and answer a couple of questions I have about chassis length and whether this truck has a tachometer. Once I have the VIN,I'll do as you suggested and contact the Mack Museum to learn more about the truck. Would this be one of the "Jr" Macks? By the way-in my intro message I told of plans to trade my '62 Chevy for the Mack;another possibility has presented itself,I'm selling my motorcycle (1968 Triumph TR6-R) to another friend for enough to buy the Mack and cover the basics to get it roadable. So it looks like I'll be able to keep my little truck too. Just out of curiosity,what sort of options would there be regarding re-powering this truck if the engine isn't useable? do you know if there are bellhousing adapters available to fit the transmission to a newer or different engine? I fully intend to run it pretty much as is,mechanically,but I won't give up on the truck if the engine is bad. Speed

Hi all; I'm in the process of getting a truck from a friend of mine. He says it's a 1940 model EH,but I'm not so sure;from what I can tell,it more resembles a 1938. The picture is in my message in the introductions . Can any of the old timers here help me with identifying this rig? I'll be getting some more info from the owner soon,but I'm anxious to get started learning as much as I can about the truck. I have lots of questions! The engine is a flathead six gas engine-what would the displacement likely be? What years did they use this engine? What is redline for it? What kind of road speed could I reasonably expect? I'm assuming it'll run about 50 or so. I know the word economy doesn't really fit this truck,but what kind of mileage should I be expecting. I'll be installing a flatbed probably about 16 feet long,and doubt I'll be hauling much over a couple of tons on it. I was told it has a 5 speed and a 3 speed Brownie;is this possible,or likely? I couldn't get under it to see what boxes it has. Are taller wheels/tires than the 10.00X20's available for it? Last,for now-was this truck available with propane power,and would that be worthwhile? Thanks for any info you can throw my way! I'm getting really jazzed about getting it on the road again,and you guys will have a lot to do with this project's success! Speed

Hi; I'm Speed,and I'm new to the world of Mack. I just made arrangements to acquire what I'm told is a 1940 Mack EH tractor. I figure this is the best place to learn about this old beauty. Right now,all I know about it is that the owner had it running and says it sounds healthy,the tires are near new steer,about 75% but a little weathered drivers,it's a six wheeler,has a flathead six engine a 5 speed,3 speed brownie,and I'm sure I remember seeing a 2 speed axle.I'll be posting pics as soon as possible,I think I have one I can post now. For now I'm not planning a restoration as such,but I will be driving it whenever possible. (I'm sure THAT'll be a learning experience!) Plans are to install a good flatbed and a knuckle boom on it,as I will be using it to move a variety of things,from pallets,to engines,to cars,and towing trailers for short distances. I look forward to your input as I become comfortable with this od truck. Feel free to remind me I'm a novice in this arena. Speed