ranchhopper Posted January 21, 2018 Share Posted January 21, 2018 I have a line on a running V12 Detroit I was kicking around the idea of putting it in the superliner. I know to some its just wrong to power a mack with a Detroit even though they did from the factory in the 70s. I'm no stranger to fabrication but am wondering how deep into it I will have to go. The truck has a fuller ten speed in it right now so the bellhousing should be right and I know exhaust and linkages will need to be changed. I should have enough room for the larger engine being a parade truck it should raise the cool factor a bit the truck has a newly done in frame rebuilt 300+ there should be a market for that to offset a little of the cost of the swap. 2 Quote Link to comment https://www.bigmacktrucks.com/topic/52269-v12-detroit-swap/ Share on other sites More sharing options...
storkmack Posted January 21, 2018 Share Posted January 21, 2018 Go for it! Quote Link to comment https://www.bigmacktrucks.com/topic/52269-v12-detroit-swap/#findComment-390212 Share on other sites More sharing options...
hatcity Posted January 21, 2018 Share Posted January 21, 2018 BLASPHEMY!!!!!!!!!!!!!!!!!!!!! Quote Success is only a stones throw away.................................................................for a Palestinian Link to comment https://www.bigmacktrucks.com/topic/52269-v12-detroit-swap/#findComment-390214 Share on other sites More sharing options...
Lmackattack Posted January 21, 2018 Share Posted January 21, 2018 the factory v12 Rs700Ls had cowl extension panels. I would assume the superliner may need them as well? 1 Quote Link to comment https://www.bigmacktrucks.com/topic/52269-v12-detroit-swap/#findComment-390218 Share on other sites More sharing options...
Swishy Posted January 21, 2018 Share Posted January 21, 2018 A screem n Detroit Diesel Mack Now that B a chiky puller with many variations of the Jimmy diesel surely U wouldn't need to stretch the hood may jack cab up a cuple inches !! any one got the dimensions of the V12 compared toa Mack 6 or V8? cya §wishy Quote Link to comment https://www.bigmacktrucks.com/topic/52269-v12-detroit-swap/#findComment-390220 Share on other sites More sharing options...
tjc transport Posted January 21, 2018 Share Posted January 21, 2018 12v-71T length 1778 mm, 70 in width 1168 mm, 46 in height 1390 mm, 55 in 12v-71T 1610 kg, 3542 lb can't find any good info for mack engine dimensions. Quote when you are up to your armpits in alligators, it is hard to remember you only came in to drain the swamp.. Link to comment https://www.bigmacktrucks.com/topic/52269-v12-detroit-swap/#findComment-390228 Share on other sites More sharing options...
Lmackattack Posted January 21, 2018 Share Posted January 21, 2018 1778mm is 70" or 5'.8" thats a pretty long hood I know a R700 and superliner have a BBC of 119 and a RS700 has a BBC of 117. if someone knows the length of the +3 cab you can do the math for hood length. Quote Link to comment https://www.bigmacktrucks.com/topic/52269-v12-detroit-swap/#findComment-390237 Share on other sites More sharing options...
ranchhopper Posted January 21, 2018 Author Share Posted January 21, 2018 You guys may scare me into saving a crap load of money and just forget it. Quote Link to comment https://www.bigmacktrucks.com/topic/52269-v12-detroit-swap/#findComment-390240 Share on other sites More sharing options...
Lmackattack Posted January 21, 2018 Share Posted January 21, 2018 I know the E9 takes up alot of the superliner hood with the turbos behind the engine. I would say for sure the V12 turbos would need to be placed up top or hang them each from the side. In theory the block is as long as a straight 6 Quote Link to comment https://www.bigmacktrucks.com/topic/52269-v12-detroit-swap/#findComment-390247 Share on other sites More sharing options...
Maxidyne Posted January 21, 2018 Share Posted January 21, 2018 For reference, the 14 liter Cummins is about 57" long and weights around a thousand pounds less. That Cummins won't fit in the 105" BBC R model, it needed the long hood R700. Quote Link to comment https://www.bigmacktrucks.com/topic/52269-v12-detroit-swap/#findComment-390248 Share on other sites More sharing options...
Swishy Posted January 21, 2018 Share Posted January 21, 2018 Ranchhopper m80 I feel sure we can spend u're money n waste u're time ......... bigtime LOL If n u lookn for an inch or 2 in length ( aint we all ) B inclined to shove the radiator 4ward partruding thru the front of the hood n over the bumper bar Butt Wadda Eye Know LOL cya §wishy 1 Quote Link to comment https://www.bigmacktrucks.com/topic/52269-v12-detroit-swap/#findComment-390251 Share on other sites More sharing options...
ranchhopper Posted January 22, 2018 Author Share Posted January 22, 2018 I'm wondering if an electric fan will save a couple inches of room I used one in my 37 chevy master deluxe when I put a 350 in it to save room. Quote Link to comment https://www.bigmacktrucks.com/topic/52269-v12-detroit-swap/#findComment-390258 Share on other sites More sharing options...
h67st Posted January 22, 2018 Share Posted January 22, 2018 If it was doable, a V12 Superliner would be a very cool truck. Quote Link to comment https://www.bigmacktrucks.com/topic/52269-v12-detroit-swap/#findComment-390265 Share on other sites More sharing options...
theakerstwo Posted January 22, 2018 Share Posted January 22, 2018 You need to call Rob Swallow and ask him about what he has done with his. Quote glenn akers Link to comment https://www.bigmacktrucks.com/topic/52269-v12-detroit-swap/#findComment-390266 Share on other sites More sharing options...
ranchhopper Posted January 22, 2018 Author Share Posted January 22, 2018 I saw two RS700Ls with V12s in them cool trucks I have one of those too could do the swap into either truck. Quote Link to comment https://www.bigmacktrucks.com/topic/52269-v12-detroit-swap/#findComment-390278 Share on other sites More sharing options...
Lmackattack Posted January 22, 2018 Share Posted January 22, 2018 If you were not working the truck electric fans should work. lots of car guys use them and some of the newer fans a gairly quiet and push /pull the air needed. that being said I always like a truck that can work and show... I think the KW A model Extended hood is 74" long you can use that as a reference to the superliner hood... If I was to do it and had the $$$ to play with I think I would move the cab back a few Inches and have the hood re glassed the extra length. It would still look like a stock superliner until you started looking it over closer. just my .02 Quote Link to comment https://www.bigmacktrucks.com/topic/52269-v12-detroit-swap/#findComment-390292 Share on other sites More sharing options...
ranchhopper Posted January 22, 2018 Author Share Posted January 22, 2018 2 hours ago, Lmackattack said: If you were not working the truck electric fans should work. lots of car guys use them and some of the newer fans a gairly quiet and push /pull the air needed. that being said I always like a truck that can work and show... I think the KW A model Extended hood is 74" long you can use that as a reference to the superliner hood... If I was to do it and had the $$$ to play with I think I would move the cab back a few Inches and have the hood re glassed the extra length. It would still look like a stock superliner until you started looking it over closer. just my .02 Good points I will give that some thought I do have a long frame the truck had a sleeper on it at one time. Quote Link to comment https://www.bigmacktrucks.com/topic/52269-v12-detroit-swap/#findComment-390299 Share on other sites More sharing options...
j hancock Posted January 22, 2018 Share Posted January 22, 2018 Some info to add to your design and engineering process data base. A DD 12V71 weighs 3,300 lbs. Just an FYI. DD music is like no other! Quote JimIt doesn't cost anything to pay attention. Link to comment https://www.bigmacktrucks.com/topic/52269-v12-detroit-swap/#findComment-390303 Share on other sites More sharing options...
Swishy Posted January 22, 2018 Share Posted January 22, 2018 Go with the Screem n Detroit music n u'll B beat n the chikies off with a big stik LOL cya §wishy Quote Link to comment https://www.bigmacktrucks.com/topic/52269-v12-detroit-swap/#findComment-390310 Share on other sites More sharing options...
ranchhopper Posted January 22, 2018 Author Share Posted January 22, 2018 Quote 7 hours ago, j hancock said: Some info to add to your design and engineering process data base. A DD 12V71 weighs 3,300 lbs. Just an FYI. DD music is like no other! That's another hurdle to figure out how I'm going to manage moving it around short of an I beam A frame holding it up over the engine bay. Quote Link to comment https://www.bigmacktrucks.com/topic/52269-v12-detroit-swap/#findComment-390328 Share on other sites More sharing options...
1965 Posted January 23, 2018 Share Posted January 23, 2018 I know an automotive 12V-71 is lighter than a marine or industrial type; the automotive type has stamped steel oil pan for 1 instead of cast & stamped steel sub pan for instance & flywheel housing could be aluminum instead of cast; the governor could be different too if not automotive, but no weight difference there 2 Quote Link to comment https://www.bigmacktrucks.com/topic/52269-v12-detroit-swap/#findComment-390333 Share on other sites More sharing options...
1958 F.W.D. Posted January 23, 2018 Share Posted January 23, 2018 Drugs will burn out your brain cells, son. Stop them now while you can. 2 Quote TWO STROKES ARE FOR GARDEN TOOLS Link to comment https://www.bigmacktrucks.com/topic/52269-v12-detroit-swap/#findComment-390336 Share on other sites More sharing options...
ws721 Posted January 23, 2018 Share Posted January 23, 2018 Sounds like an Awesome project. Why not go for it? Its a toy. What do you have to lose besides time? Any investment could be sold/traded off if it didn't work Quote Remember if it's got a hood it's no good! Link to comment https://www.bigmacktrucks.com/topic/52269-v12-detroit-swap/#findComment-390363 Share on other sites More sharing options...
tjc transport Posted January 23, 2018 Share Posted January 23, 2018 ain't the trucks down under thick with green leakers? maybe one of our down under fellers can post up some specs Quote when you are up to your armpits in alligators, it is hard to remember you only came in to drain the swamp.. Link to comment https://www.bigmacktrucks.com/topic/52269-v12-detroit-swap/#findComment-390368 Share on other sites More sharing options...
Swishy Posted January 24, 2018 Share Posted January 24, 2018 RE: thick with green leakers Yes thik heads Sum ol grumpy thik heads stihl use n the screemers ........LOL...........Like me Here a few pix of the engine room n office cya §wishy 1 Quote Link to comment https://www.bigmacktrucks.com/topic/52269-v12-detroit-swap/#findComment-390400 Share on other sites More sharing options...
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