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Old 09-09-2016, 12:39 PM   #21
Skoolie
 
Join Date: Aug 2015
Location: Oregon
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Year: 1984
Coachwork: International Harvester
Chassis: S1700
Engine: 6.9l IDI
Rated Cap: 27 (adults)
Quote:
Originally Posted by EastCoastCB View Post
Seems like one only one in four I see at the auctions with 6.0's is running.

If you want something HOLY, well- Jesus is running a 6.9 with turbo and brownie box.
Yes I am. 😬 Im loving it too! I would say on a short bus a 6.9, even without a turbo would be satisfactory. Many of the weaknesses associated with the 7.3 were not issues with the 6.9. They have very thick cylinder walls etc. anyone who ends up getting a 6.9 would do well to get an 87 if they plan on rodding it at all. They had some updates for durability etc. plus, parts are super cheap and easy to get because so many people are still driving ford trucks with these engines. And auto parts store usually has them
In stock. No wouldn't get a used 7.3 unless I could get documents showing that they always used the appropriate coolant additives. The 7.3 is notorious for cylinder cavitation and there is no great way to to examine an engine for that problem beyond tearing it down and using ultrasound imaging haha. If you can, and you are shoppng newer buses get a 6bt. But I would stay away from 24valve cummins. While the 12 valve was and is a tremendously powerful and reliable engine, by comparison it's modern electronic counterpart is a finicky piece of junk. Not to say it isnt a powerhouse that many people swear by. But yeah, I actually love the 6.9. It has a really classic growl, idles smooth, and gives you a wider power curved than some other diesels. I attribute this to its v8 arrangement. If I weren't a weirdo who wanted to show the world that I could do something...unexpected...I probably would
Have shopped for a
Cummins...there is an infinite plethora of oem and aftermarket parts available.
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Old 09-09-2016, 12:41 PM   #22
Skoolie
 
Join Date: Aug 2015
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Posts: 156
Year: 1984
Coachwork: International Harvester
Chassis: S1700
Engine: 6.9l IDI
Rated Cap: 27 (adults)
I've never read anything particularly positive about the 6.0. In fact it seems here is an entire market that has developed for parts that are supposed to stop it from blowing up on you haha
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Old 09-09-2016, 01:01 PM   #23
Site Team
 
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Engine: 8.3l Cummins
Rated Cap: 78
As the famous saying goes, "There's no replacement for displacement."

Quote:
Originally Posted by Brad_SwiftFur View Post
The Cummins engines, both the 8.3 and 5.9 are pretty solid engines, I wouldn't expect more than about 300 HP from the 8.3 and about 200 or so from the 5.9.

Cap'nHooligan asked if one could get 600 HP from a Cummins 8.3. The short answer is "Sure, you can", but at what price? A couple days for a tractor pull setup. I've seen Dodge trucks build the 5.9 for insane HP, but they don't last long. For our purposes, you'll want to consider something considerably larger, like an ISX Cummins (Somewhere around 15-16 liter engine) but they can be factory spec'ed for up to about 600 and will last many, many miles at that rating. The Volvo I recently turned in had that engine and was showing close to 800K miles, and the engine still had a lot of life left in it.
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Old 09-09-2016, 01:48 PM   #24
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Originally Posted by Tango View Post
Without a doubt the only way to truly "bulletproof" a 6.0...is to replace it with a 466 or Cummins.
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Old 09-09-2016, 01:55 PM   #25
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Quote:
Originally Posted by Tango View Post
You can get close to 1,000 hp out of a Cummins 4BT...but figure on it lasting maybe one or two "pulls".
LOL.. that's probably very true.

But the 5.9 Cummins or 6BT, whatever you wanna call it, has a lot of room for improvement. Easily 500hp, and reliable. Same with the 7.3 L Powerstroke.

I had a van with the 7.3 in it, and when I sold it, it had right at 400k on the clock, I bought it when it had 180K. Shortly after purchase, I did lots of upgrades. I was getting roughly 575 at the wheels. And ran it like that for 200k miles, with 0 engine issues.

I def want a 5.9 engine. With the beefy Allison transmission and heavy duty rear end, I plan on a few upgrades. It will make getting to 70mph very fast and easy LOL
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Old 09-09-2016, 04:24 PM   #26
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Location: Olympia, WA
Posts: 83
Year: 2004
Coachwork: Collins
Chassis: E450 Ferd
Engine: 6.0L Diesel
Rated Cap: 20 window lickin Jeffies
Quote:
Originally Posted by cadillackid View Post
and dont forget the head bolt studs...
-Christopher
If you haven't yet blown the head gaskets, you don't need to pull the heads and change the head studs. That's a myth.
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Old 09-09-2016, 04:39 PM   #27
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Engine: DT360
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Quote:
Originally Posted by Goatherder View Post
If you haven't yet blown the head gaskets, you don't need to pull the heads and change the head studs. That's a myth.

so the head gaskets blow early on in the engine's life if they are going to? I always thought the issue was there only being 10 head-bolts asnd over time you could still blow the gaskets.. or were there updates in certain years which mitigated this issue?

I ask because there are a TON of IC-busses just coming on the used market with 6.0's in them.. nice busses for really nice prices other than the VT-365(6.0).. trying to figure out if there were actually "good years" or "better years" for that engine..

before I heard the wrath of skoolie-ville in here I almost bought a VT-365 bus that ran perfectly...

I also looked at one recently that had big issues (it was little older)...

-Christopher
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Old 09-09-2016, 10:51 PM   #28
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Engine: 6.0L Diesel
Rated Cap: 20 window lickin Jeffies
Quote:
Originally Posted by cadillackid View Post
so the head gaskets blow early on in the engine's life if they are going to? I always thought the issue was there only being 10 head-bolts asnd over time you could still blow the gaskets..

I also looked at one recently that had big issues (it was little older)...
-Christopher
Here's an explanation:
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Old 09-09-2016, 11:07 PM   #29
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Location: Olympia, WA
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Year: 2004
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Chassis: E450 Ferd
Engine: 6.0L Diesel
Rated Cap: 20 window lickin Jeffies
And another informative vid regarding which Powerstroke engine is best. A bit long winded, but this guy knows his sh!t.

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Old 09-10-2016, 05:20 AM   #30
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Hey Goatherder,
Fantastic information. I can not believe how bad the 6.0 have been talked about on this site and others...it would be interesting to get them in a room with this guy. Thanks for sharing. The guys in the shop always have the best information. I thank you again. Auction is today. I will shout out with my choice.
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