jessecam Posted May 23, 2014 Share Posted May 23, 2014 I received the Mack B42 from out west and am very impressed with the overall body and frame. Its amazing how clean all the metal is. A few dents here and there, I noticed what seems to be a few stress crack on the back of the cab. The interior is very straight also except for the seat. I checked the oil and threw a battery init but the starter would not engage. After crawling under to remove thr starter I see a 4" by 6" opening in the block were a rod came threw on the 401 gas engine. So that being said, I have sentfor information from the Mack Museum and looking for thoughts on a replacement engine and whether I should find a diesel or the original gas motor. The trans is a 5 speed with no 2 speed rearend. Just wanted to know any thoughts or ideas. I do like to keep things original but? 1 Quote Link to comment https://www.bigmacktrucks.com/topic/35828-1956-mack-b42x-delivery/ Share on other sites More sharing options...
Popular Post 2stacksuperdog Posted May 23, 2014 Popular Post Share Posted May 23, 2014 Trucks looks better right side up... 8 Quote Matt Link to comment https://www.bigmacktrucks.com/topic/35828-1956-mack-b42x-delivery/#findComment-246556 Share on other sites More sharing options...
jessecam Posted May 23, 2014 Author Share Posted May 23, 2014 Thanks, how did you do that Quote Link to comment https://www.bigmacktrucks.com/topic/35828-1956-mack-b42x-delivery/#findComment-246557 Share on other sites More sharing options...
2stacksuperdog Posted May 23, 2014 Share Posted May 23, 2014 Thanks, how did you do thatsave it and hit the rotate button 1 Quote Matt Link to comment https://www.bigmacktrucks.com/topic/35828-1956-mack-b42x-delivery/#findComment-246558 Share on other sites More sharing options...
Mike Posted May 23, 2014 Share Posted May 23, 2014 Looks like a very good truck. Good luck with it.mike Quote Link to comment https://www.bigmacktrucks.com/topic/35828-1956-mack-b42x-delivery/#findComment-246562 Share on other sites More sharing options...
Bigdogtrucker Posted May 24, 2014 Share Posted May 24, 2014 Looks nice,original paint? Quote Link to comment https://www.bigmacktrucks.com/topic/35828-1956-mack-b42x-delivery/#findComment-246565 Share on other sites More sharing options...
jessecam Posted May 24, 2014 Author Share Posted May 24, 2014 Looks nice,original paint?Seems to be, to bad someone stole the bulldogs Quote Link to comment https://www.bigmacktrucks.com/topic/35828-1956-mack-b42x-delivery/#findComment-246572 Share on other sites More sharing options...
Bigdogtrucker Posted May 24, 2014 Share Posted May 24, 2014 Seems to be, to bad someone stole the bulldogsI'd pop the dent out of the shell and linseed oil that thing and preserve it,has great patina Quote Link to comment https://www.bigmacktrucks.com/topic/35828-1956-mack-b42x-delivery/#findComment-246575 Share on other sites More sharing options...
Maddog13407 Posted May 24, 2014 Share Posted May 24, 2014 been quite a few posts on repowering B42's. to stick a 673 and 72 series transmission in there you better have a doner B61 truck for the engine mounts, radiator, 1700 series driveshaft, hogs head out of a diesel rear end etc. you also need the clutch shaft that goes thru the spring hanger or have yours rekeyed as the one for a B42 has the keyway in a different spot. you will find this out f you use a gasjob one in a diesel as you have no clutch adjustment.i say all this speakin of a B42/401. the bigger gas job 464/540/707 you may be able to use the same motor mounts and clutch linkage if the 464/540/707 had the smaller 67 series transmission. B42's have the small 77 series trans. the rear engine/trans mounts are also different between the 67 and 72 series trans. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/35828-1956-mack-b42x-delivery/#findComment-246601 Share on other sites More sharing options...
bullhusk Posted May 24, 2014 Share Posted May 24, 2014 I have been told that the International DT466 (the older mech pump) motors have been put in a fewBullhusk Quote Link to comment https://www.bigmacktrucks.com/topic/35828-1956-mack-b42x-delivery/#findComment-246610 Share on other sites More sharing options...
Popular Post General Ike Posted May 24, 2014 Popular Post Share Posted May 24, 2014 I've got at 6v53 in my B85 3 Quote Ed Smith1957 B85F 1242 "The General Ike" Link to comment https://www.bigmacktrucks.com/topic/35828-1956-mack-b42x-delivery/#findComment-246620 Share on other sites More sharing options...
Bigdogtrucker Posted May 24, 2014 Share Posted May 24, 2014 I've got at 6v53 in my B85Must make some serious noise!!! 1 Quote Link to comment https://www.bigmacktrucks.com/topic/35828-1956-mack-b42x-delivery/#findComment-246621 Share on other sites More sharing options...
Maddog13407 Posted May 24, 2014 Share Posted May 24, 2014 been mentoned before but an 8.2 litre Detroit I think would fit in there. all depends on the exhaust/steering box. might even bolt right up to the same tranny and I think its in the operating range around 3200 so you don't have to change the rear end. Quote Link to comment https://www.bigmacktrucks.com/topic/35828-1956-mack-b42x-delivery/#findComment-246625 Share on other sites More sharing options...
mack mhe9 Posted May 24, 2014 Share Posted May 24, 2014 I'd put a 5.9 in it and a nice alum flat body on it and use it for my shop truck. 1 you can get parts for it really easy and 2 you can change it back when your done enjoying all the attention you get at you local hardware store, 1 Quote Link to comment https://www.bigmacktrucks.com/topic/35828-1956-mack-b42x-delivery/#findComment-246627 Share on other sites More sharing options...
1958 F.W.D. Posted May 24, 2014 Share Posted May 24, 2014 DT466? 6V53? 8.3 Detroit??? in a B-Model Mack?????You all need to be executed by firing squad. Or bitch slapped with the rubber chicken; I cannot decide which. That is all. Carry on. 1 Quote TWO STROKES ARE FOR GARDEN TOOLS Link to comment https://www.bigmacktrucks.com/topic/35828-1956-mack-b42x-delivery/#findComment-246632 Share on other sites More sharing options...
Bigdogtrucker Posted May 24, 2014 Share Posted May 24, 2014 How about a 671,nice sized engine for a B .http://www.youtube.com/watch?v=NZoU4qPxR78 Quote Link to comment https://www.bigmacktrucks.com/topic/35828-1956-mack-b42x-delivery/#findComment-246636 Share on other sites More sharing options...
General Ike Posted May 24, 2014 Share Posted May 24, 2014 Mine was repowered long before I bought it. It's reliable, sounds good, and has all the power I need.The 671 powered Aussie B was a nice rig. Guy coulda used a little more touch on his shifting that road ranger through the lower ratios. 1 Quote Ed Smith1957 B85F 1242 "The General Ike" Link to comment https://www.bigmacktrucks.com/topic/35828-1956-mack-b42x-delivery/#findComment-246638 Share on other sites More sharing options...
1958 F.W.D. Posted May 24, 2014 Share Posted May 24, 2014 Thank you, I just threw up my breakfast. And no reason to ever worry about those gears being razor sharp. Quote TWO STROKES ARE FOR GARDEN TOOLS Link to comment https://www.bigmacktrucks.com/topic/35828-1956-mack-b42x-delivery/#findComment-246639 Share on other sites More sharing options...
Bigdogtrucker Posted May 24, 2014 Share Posted May 24, 2014 Two stroke Jimmy's are a lot of fun,get's lot's of attention too Quote Link to comment https://www.bigmacktrucks.com/topic/35828-1956-mack-b42x-delivery/#findComment-246641 Share on other sites More sharing options...
Joe Ditchkus Posted May 24, 2014 Share Posted May 24, 2014 Tin looks good. Did you know about engine being ventilated before arrival at your place ? Lots of good choices but if only a hobby truck I would try to replace with original mainly for ease of replacement. AS Maddog said a donor truck is about necessary to put a 673-711 in it and plenty of labor. Good luck whatever way you decide to go. Joe D. Quote Link to comment https://www.bigmacktrucks.com/topic/35828-1956-mack-b42x-delivery/#findComment-246657 Share on other sites More sharing options...
jessecam Posted May 24, 2014 Author Share Posted May 24, 2014 I Tin looks good. Did you know about engine being ventilated before arrival at your place ? Lots of good choices but if only a hobby truck I would try to replace with original mainly for ease of replacement. AS Maddog said a donor truck is about necessary to put a 673-711 in it and plenty of labor. Good luck whatever way you decide to go. Joe D.I did not know on the engine, it was purchased on line and has not been plated since 1981. I figured there was a reason they parked it and I am ok with it. I dont know if there are a lot of parts available for the 401 gasser or even if I have ever seen a used 401 for sale. I have some option on diesel engines but hard to find a donor truck in northern michigan. Quote Link to comment https://www.bigmacktrucks.com/topic/35828-1956-mack-b42x-delivery/#findComment-246670 Share on other sites More sharing options...
jessecam Posted May 24, 2014 Author Share Posted May 24, 2014 How about a 671,nice sized engine for a B . That is impressive. Quote Link to comment https://www.bigmacktrucks.com/topic/35828-1956-mack-b42x-delivery/#findComment-246683 Share on other sites More sharing options...
Maddog13407 Posted May 24, 2014 Share Posted May 24, 2014 went to look at single axle B61 dump one time that had a 318 with a triplex in it. was nice and reasonable but the guy who owned it couldn't shift it for shit and was worried there was 10 lbs of metal and gears in the bottom of the tranny or the taddletale plug on the side with a magnet. Quote Link to comment https://www.bigmacktrucks.com/topic/35828-1956-mack-b42x-delivery/#findComment-246689 Share on other sites More sharing options...
Maddog13407 Posted May 24, 2014 Share Posted May 24, 2014 holy shit, even for a Roadranger that guy is pretty rough on it! raking every gear! 1 Quote Link to comment https://www.bigmacktrucks.com/topic/35828-1956-mack-b42x-delivery/#findComment-246691 Share on other sites More sharing options...
Bigdogtrucker Posted May 24, 2014 Share Posted May 24, 2014 Yeah,i wasn't expecting that the first time I saw that video!Poor gears...lol Quote Link to comment https://www.bigmacktrucks.com/topic/35828-1956-mack-b42x-delivery/#findComment-246692 Share on other sites More sharing options...
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