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Author Topic: Will the Cummings fit  (Read 1979 times)
fraser8
Fraser
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1972 Prevost


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« on: September 27, 2011, 09:34:48 PM »

Will this Cummings fit in my 72 Prevost, it currently has a 8-71 with an Allison. Just asking as this truck us being parted out locally to me. Thanks, Fraser

Good running big cam cummings
855 cubic inch
Asking $2500 or best offer
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Fraser Field
Deroche, BC, Canada
Where the milk cows out number the people, but they can't vote
1972 Prevost, Detroit 8-71/740 Allison automatic, Jakes
Hobbies: restoring classic cars, www.oldambulance.com, arranging old car tours: www.coasters2010.com, www.canadiancoasters.ca
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TomC
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« Reply #1 on: September 28, 2011, 06:48:24 AM »

Like the Caterpillar 3406/C15/C16 and Detroit Series 60, the Cummins (NO G) Big Cam is a big block truck engine that is much taller then your 8V-71.  You'll probably have to make a dome above the engine protruding into what I assume is your bedroom to make it fit.  Plus it is a heavy engine-pushing 3,000lbs.  While a good engine-I think it is an overkill for a bus.  The better engine would be the Cummins ISM that weighs in around 2,200lbs (actually less then the 8V-71), is about the same height as the 8V-71 (although longer) and can be rebuilt up to a 500hp and 1550lb/ft torque.  The ISM is an electronic engine.  The Big Cam is a mechanical engine.  Good Luck, TomC
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Tom & Donna Christman. '77 AMGeneral 10240B; 8V-71TATAIC V730.
robertglines1
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« Reply #2 on: September 28, 2011, 07:02:49 AM »

 The  years before prevost put 60 series in their coaches the tag axle configuration prevented the use of longer engines in them also.   Dick Eagler and hard headed ken can fill you in on that better than I.  I know it would involve Major mods.   Bob
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Bob@Judy  98 XLE prevost with 3 slides --Home done---last one! SW INdiana
luvrbus
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« Reply #3 on: September 28, 2011, 07:14:57 AM »

Yep the tag creates problems for you some change the the tag to a 94 model and up I have a friend that installed a M11 in his Prevost lots of work redoing the original tag for the engine to fit

good luck
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Life is short drink the good wine first
fraser8
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« Reply #4 on: September 28, 2011, 08:01:17 AM »

I really appreciate your help on this, the price was right but I was unsure if it was the right engine for me. I'll pass on the Cummings and keep enjoying the the sweet sound of my Detroit..
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Fraser Field
Deroche, BC, Canada
Where the milk cows out number the people, but they can't vote
1972 Prevost, Detroit 8-71/740 Allison automatic, Jakes
Hobbies: restoring classic cars, www.oldambulance.com, arranging old car tours: www.coasters2010.com, www.canadiancoasters.ca
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Just Dallas
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« Reply #5 on: September 28, 2011, 09:11:15 AM »

What kind of engine is a "Cummings?"

I really appreciate your help on this, the price was right but I was unsure if it was the right engine for me. I'll pass on the Cummings and keep enjoying the the sweet sound of my Detroit..
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I'm just an old chunk of coal... but I'm gonna be a diamond someday.
luvrbus
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« Reply #6 on: September 28, 2011, 10:15:33 AM »

That is what you get with the spell check Dallas LOL
« Last Edit: September 28, 2011, 10:38:06 AM by luvrbus » Logged

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fraser8
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« Reply #7 on: September 28, 2011, 10:33:33 AM »

My deepest apologies to all the scholars on the site, I used the cut and past from the sellers advertisement. I guess I was thinking about comings and goings, but that is another subject. In my defense Cummings is in the spell check when you type in Cummins
In the future I'll be more attentive, LOL, I do appreciate your help, you save me from having a big Cummins in my car barn. Thanks again....
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Fraser Field
Deroche, BC, Canada
Where the milk cows out number the people, but they can't vote
1972 Prevost, Detroit 8-71/740 Allison automatic, Jakes
Hobbies: restoring classic cars, www.oldambulance.com, arranging old car tours: www.coasters2010.com, www.canadiancoasters.ca
Retired Paramedic
luvrbus
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« Reply #8 on: September 28, 2011, 10:39:13 AM »

Don't worry about it how do think I know about the spell check thing  lol
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Life is short drink the good wine first
Just Dallas
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« Reply #9 on: September 28, 2011, 11:38:21 AM »

Sorry, I was just picking on you. Clifford is right, but my way around it is to add the correct spelling to the spell check. Right Click on the "misspelled" word and click on "ADD"

Of course, if you are an internet exploder fan, that may not work. My experience is with Firefox and using Linux.

My deepest apologies to all the scholars on the site, I used the cut and past from the sellers advertisement. I guess I was thinking about comings and goings, but that is another subject. In my defense Cummings is in the spell check when you type in Cummins
In the future I'll be more attentive, LOL, I do appreciate your help, you save me from having a big Cummins in my car barn. Thanks again....
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I'm just an old chunk of coal... but I'm gonna be a diamond someday.
fraser8
Fraser
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1972 Prevost


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« Reply #10 on: September 28, 2011, 11:58:13 AM »

No offence. I appreciate a little jab, it keeps my mind mind young.
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Fraser Field
Deroche, BC, Canada
Where the milk cows out number the people, but they can't vote
1972 Prevost, Detroit 8-71/740 Allison automatic, Jakes
Hobbies: restoring classic cars, www.oldambulance.com, arranging old car tours: www.coasters2010.com, www.canadiancoasters.ca
Retired Paramedic
Stormcloud
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« Reply #11 on: September 28, 2011, 12:25:22 PM »

I'm sure you must have something there that the Cummins will fit into....
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Mark Morgan    near Brandon, Manitoba, Canada
1972 MCI-7     'PapaBus'  8v-71N MT654 Automatic
CrabbyMilton
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« Reply #12 on: September 28, 2011, 01:04:08 PM »

As a CUMMINS stockholder, I must protest that mistake in spelling. That's ok we all make mistakes BUT DON'T LET IT HAPPEN AGAIN or I'll scream. Smiley
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John316
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« Reply #13 on: September 28, 2011, 05:11:53 PM »

As a CUMMINS stockholder, I must protest that mistake in spelling. That's ok we all make mistakes BUT DON'T LET IT HAPPEN AGAIN or I'll scream. Smiley

Ahh, but once again, Cummins is Cumming to the top. LOL
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MCI 1995 DL3. DD S60 with a Allison B500.
Brassman
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« Reply #14 on: September 28, 2011, 08:34:54 PM »

To bad, a Cummins Big Cam will run just about forever.
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morefire
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« Reply #15 on: September 29, 2011, 04:31:35 AM »

I'd make it fit... but thats just me
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David G
Toronto, Ontario
2009 Bluebird 40' Coach
Cummins ISX-675HP!!
TomC
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« Reply #16 on: September 29, 2011, 07:46:08 AM »

Even though the ISX Cummins is a 15 liter compared to the Big Cam being a 14 liter, the ISX is actually a shorter engine then the Big Cam.  Hence the ISX would be an easier fitting engine.  Personally have always thought the NTC Big Cam engines to be junk-just don't get the longevity out of these engines that you can from a Caterpillar 3406B or a Detroit Series 60.

When I was driving, I ran into an owner/operator that told me his overhaul strategy with his Big Cam 3 400hp.  At 200,000 miles, he'd overhaul the back two cylinders; at 400,000 miles he'd overhaul the middle two cylinders; at 600,000 miles he'd rebuild the whole engine.  In this day and age-that engine would be toast compared to all the new electronic engines going sometimes over a million miles before any mechanical overhaul.  I had one driver come in and tell me he drove 150,000 miles a year and changed his oil on his Series 60 4 times a year-or every 37,500miles!  I also asked how many miles on the engine he had an said 1.3 million without rebuild yet! Guess I couldn't scold him for lengthy oil changes-could I! Good Luck, TomC
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Tom & Donna Christman. '77 AMGeneral 10240B; 8V-71TATAIC V730.
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