lvparsons Posted December 10, 2015 Share Posted December 10, 2015 Hello everybody. I just bought a 1946 Mack tow truck. I guess the model is "LF". It has a big beautiful straight six, with overhead valves and a downdraft carbureter.Here's a picture. Can anybody tell me the model, displacement, etc of this engine? Thanks! Quote Link to comment https://www.bigmacktrucks.com/topic/43030-can-you-identify-my-engine/ Share on other sites More sharing options...
j hancock Posted December 10, 2015 Share Posted December 10, 2015 Looks like a Mack 510 CID, 158 HP @2400 rpm, 400 lb ft of torque @ 1000 rpm.We are going to need pictures of the whole truck sometime. Did you buy the white one out of Maine? Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/43030-can-you-identify-my-engine/#findComment-315062 Share on other sites More sharing options...
Mcrafty1 Posted December 10, 2015 Share Posted December 10, 2015 Looks like a Mack 510 CID, 158 HP @2400 rpm, 400 lb ft of torque @ 1000 rpm.We are going to need pictures of the whole truck sometime. Did you buy the white one out of Maine?Wow, 510 CID and only 158 HP....what happened there? thats a lot of room for the explosion to only develop that much umph. ...no intent at a hijack, it's a question about this engine. Quote Link to comment https://www.bigmacktrucks.com/topic/43030-can-you-identify-my-engine/#findComment-315066 Share on other sites More sharing options...
j hancock Posted December 10, 2015 Share Posted December 10, 2015 Mack NA 673 (672 CID) diesel @180 HP in a B model doesn't sound too impressive these days either. 2 Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/43030-can-you-identify-my-engine/#findComment-315068 Share on other sites More sharing options...
Freightrain Posted December 10, 2015 Share Posted December 10, 2015 Yup, back for the day that is all they produced. Very low compression, low power engines. Kinda hard to figure with the technology of today how we ever got anything done back then? Quote Larry 1959 B61 Liv'n Large...................... Charter member of the "MACK PACK" Link to comment https://www.bigmacktrucks.com/topic/43030-can-you-identify-my-engine/#findComment-315069 Share on other sites More sharing options...
j hancock Posted December 10, 2015 Share Posted December 10, 2015 LOTS of gears and low ratio rears! 1 Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/43030-can-you-identify-my-engine/#findComment-315071 Share on other sites More sharing options...
39 Baby Mack Posted December 10, 2015 Share Posted December 10, 2015 Mack NA 673 (672 CID) diesel @180 HP in a B model doesn't sound too impressive these days either.That was for a P engine (twin tuned intake manifolds), plain one was only 170!Ron 1 Quote Link to comment https://www.bigmacktrucks.com/topic/43030-can-you-identify-my-engine/#findComment-315075 Share on other sites More sharing options...
BOB DINGSDALE Posted December 10, 2015 Share Posted December 10, 2015 ivparsons; thats what they call an updraft carb 1 Quote Link to comment https://www.bigmacktrucks.com/topic/43030-can-you-identify-my-engine/#findComment-315104 Share on other sites More sharing options...
lvparsons Posted December 11, 2015 Author Share Posted December 11, 2015 Thanks everybody - great info! And yes, I bought the white one from Maine. So you've probably seen the pix from ebay, but I'll get some on here. Even my wife thinks its pretty! Quote Link to comment https://www.bigmacktrucks.com/topic/43030-can-you-identify-my-engine/#findComment-315158 Share on other sites More sharing options...
j hancock Posted December 11, 2015 Share Posted December 11, 2015 OK. I looked at the truck when it was for sale in CT. Good deal if Momma likes it also! Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/43030-can-you-identify-my-engine/#findComment-315182 Share on other sites More sharing options...
Mcrafty1 Posted December 11, 2015 Share Posted December 11, 2015 Thanks everybody - great info! And yes, I bought the white one from Maine. So you've probably seen the pix from ebay, but I'll get some on here. Even my wife thinks its pretty! You sir are one lucky dog.....owner Quote Link to comment https://www.bigmacktrucks.com/topic/43030-can-you-identify-my-engine/#findComment-315232 Share on other sites More sharing options...
Vladislav Posted December 12, 2015 Share Posted December 12, 2015 As said in the post above You might get better informed looking on the engine number.It's stamped on the right side of the engine near the front cover.Mack overhead engines of those years were called Thermodynes both gas and diesels.There were many of modifications of different sizes and HP.From what you posted it looks like EN510 or EN707. Not many chances (if any?) to tell how big it is for sure excepting by the engine number.Vlad Quote Никогда не бывает слишком много грузовиков! leversole 11.2012 Link to comment https://www.bigmacktrucks.com/topic/43030-can-you-identify-my-engine/#findComment-315420 Share on other sites More sharing options...
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