Mike Harbison Posted March 1, 2020 Share Posted March 1, 2020 3 hours ago, Vladislav said: Also an interesting fact is the diff ratio. Mike, what the thunder did force you to set up a new account? Only way I could get logged in to post on this portable tablet thing I got. One positive is that it doesn't have the problems my account on my desk computer has,no error messages and I can actually follow a post. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/60995-salt-lake-city-w-71/page/3/#findComment-444091 Share on other sites More sharing options...
mackdaddy Posted March 1, 2020 Share Posted March 1, 2020 6 hours ago, CaptainCrutch said: C motors have the exhaust manifold on the driver side of the truck, this one has it on the passenger. The thing that leads me to believe it’s a B motor is the pattern on the block. My ‘53 has a B motor in it so the year isn’t really a reliable way of figuring out which motor I’ve learned... yes it is a B 2 Quote Link to comment https://www.bigmacktrucks.com/topic/60995-salt-lake-city-w-71/page/3/#findComment-444122 Share on other sites More sharing options...
Vladislav Posted March 1, 2020 Share Posted March 1, 2020 16 hours ago, CaptainCrutch said: C motors have the exhaust manifold on the driver side of the truck, this one has it on the passenger. The thing that leads me to believe it’s a B motor is the pattern on the block. My ‘53 has a B motor in it so the year isn’t really a reliable way of figuring out which motor I’ve learned... Mack EY. Made in 1943.707 ci displacement. As you can see both manifolds are on the right side. Quote Никогда не бывает слишком много грузовиков! leversole 11.2012 Link to comment https://www.bigmacktrucks.com/topic/60995-salt-lake-city-w-71/page/3/#findComment-444154 Share on other sites More sharing options...
CaptainCrutch Posted March 1, 2020 Author Share Posted March 1, 2020 1 hour ago, Vladislav said: Mack EY. Made in 1943.707 ci displacement. As you can see both manifolds are on the right side. Ah, sorry, most of the time I’m used to seeing 707 motors broken down into just A, B, and C. Never seen an updraft carb on a 707 either... must’ve been a military only thing... Regardless the engine in that LT is a 707B... Quote Who needs a back yard when you could have a Yard?! Link to comment https://www.bigmacktrucks.com/topic/60995-salt-lake-city-w-71/page/3/#findComment-444170 Share on other sites More sharing options...
Vladislav Posted March 1, 2020 Share Posted March 1, 2020 15 minutes ago, CaptainCrutch said: Ah, sorry, most of the time I’m used to seeing 707 motors broken down into just A, B, and C. Never seen an updraft carb on a 707 either... must’ve been a military only thing... Regardless the engine in that LT is a 707B... No that engine was not military only. It was originally offered by Mack as a part of the newly designed Thermodyne family in November of 1938. So it was before the beginning of WW2. I'm not ready to share facts right at the moment but suppose they were also installed in commercial trucks after the war until newer generation of the same basic design came into produdtion. Worth to note the military version had some specialialities such as modified oil pan and pump to clear up the front drive axle since those were used in 6x6 trucks. Also they didn't have dual ignition being not a firetruck engine. But the 2nd spot in the block for the additional distributer drilling and the 2nd geared area on the engine shaft were all there. Quote Никогда не бывает слишком много грузовиков! leversole 11.2012 Link to comment https://www.bigmacktrucks.com/topic/60995-salt-lake-city-w-71/page/3/#findComment-444176 Share on other sites More sharing options...
CaptainCrutch Posted March 1, 2020 Author Share Posted March 1, 2020 (edited) 51 minutes ago, Vladislav said: No that engine was not military only. It was originally offered by Mack as a part of the newly designed Thermodyne family in November of 1938. I was referring to the updraft carb on a 707, not the engine itself. I know 707s weren’t military only, my firetruck has one and was just fixed up using parts off an engine from an OTR tractor. Edited March 1, 2020 by CaptainCrutch 1 Quote Who needs a back yard when you could have a Yard?! Link to comment https://www.bigmacktrucks.com/topic/60995-salt-lake-city-w-71/page/3/#findComment-444182 Share on other sites More sharing options...
Popular Post CaptainCrutch Posted March 4, 2020 Author Popular Post Share Posted March 4, 2020 Just stumbled upon this really nice pic of Dr. Bill’s old W-71. Supposedly this was taken just a few months ago at the Gerhart Show... 4 Quote Who needs a back yard when you could have a Yard?! Link to comment https://www.bigmacktrucks.com/topic/60995-salt-lake-city-w-71/page/3/#findComment-444375 Share on other sites More sharing options...
yarnall Posted March 4, 2020 Share Posted March 4, 2020 21 minutes ago, CaptainCrutch said: Just stumbled upon this really nice pic of Dr. Bill’s old W-71. Supposedly this was taken just a few months ago at the Gerhart Show... This picture was from 2018. It was parked at a different place in 2019. Not that it really matters. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/60995-salt-lake-city-w-71/page/3/#findComment-444377 Share on other sites More sharing options...
CaptainCrutch Posted March 4, 2020 Author Share Posted March 4, 2020 26 minutes ago, yarnall said: This picture was from 2018. It was parked at a different place in 2019. Not that it really matters. Is it normally at the Gerhart show? I’ve only ever gone on the Saturday once most people have left so I miss a lot of the trucks... Quote Who needs a back yard when you could have a Yard?! Link to comment https://www.bigmacktrucks.com/topic/60995-salt-lake-city-w-71/page/3/#findComment-444381 Share on other sites More sharing options...
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