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Old 11-02-2015, 08:50 AM   #85
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Mel,
The video is interesting for a few reasons... Talks about engine mount fabrication and other stuff.
With the extra weight of the Cummins, are you planning to put stronger springs in the front end?
I did the bigger springs a while back. Raised the front about 2" w/o the air bags. Maybe I'll need the air bags with the extra weight.
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Old 11-02-2015, 08:52 AM   #86
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Mel,

Just got back from the PO, its in the mail as they say.

Gary
Thanks!!!
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Old 11-02-2015, 09:34 AM   #87
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Got some thing done on this again. the 454 is out of there to become next years project.
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Leaving that big void in the front of the AS.
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And got the head off.
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The engine hoist don't like the weight of this w/o the head.
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And it don't fit
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That 454 may become this years project...again

Got to remove the stop solenoid and bracket and maybe the throttle bracket.

Ordered a air/water intercooler from frozenboost.com. Got the 600hp system with the type 101 heat exchanger which will go under the bumper. After I get it and see want it looks like, may order another of the type 101 heat exchangers for a transmission cooler.

To be continued.
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Old 11-02-2015, 11:45 AM   #88
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Mel, that Cummins block sure looks to be a lot longer than a 454 block. Are you going to have to move the transmission back any to make room?
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Old 11-02-2015, 12:01 PM   #89
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I haven't got my tape measure out but remember the Isuzu is almost identical to the Cummins in displacement so the blocks must be pretty close. With the Isuzu the trans is moved back a couple of inches. The rear mount actually lives behind the cross member rather than on top of it.
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Old 11-02-2015, 12:10 PM   #90
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While I think of it Airstream used a "ring" type of spacer to adopt the Isuzu to the TH400 and the Isuzu maintains it's flywheel and ring gear that the starter drives and there is a "spud" about 4" in dia. mounted to the crankshaft/flywheel that the flex plate mounts to. The GM flex plate has it's own ring gear that does nothing.
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Old 11-02-2015, 12:34 PM   #91
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Just a point of order, an opinion, on such swaps....

If I were doing this swap I would remove practically ALL hoses, wires, etc. that cross over, under, or around the engine to be reinstalled and if necessary reworked and rerouted after the engine is set.

IMO it is easier to start with a blank canvas when transplanting an engine that is pretty much different in every way.


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Old 11-02-2015, 12:47 PM   #92
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454 to Cummins

If I were doing that swap....

I would think about cutting that front crossmember at a point fairly close to the frame rail on each side, (but not too close) to make the cross member bolt in and bolt out.

By doing this and removing the bumper, the many ins and outs you are going to have to do will be much easier, and also, future possible repair issues will be easier. (In and out with the head on would be cool).

Of course I really don't know if that will work on that vehicle, but I would be thinking about making that move if at all possible.


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Old 11-02-2015, 02:10 PM   #93
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If I were doing that swap....

I would think about cutting that front cross member at a point fairly close to the frame rail on each side, (but not too close) to make the cross member bolt in and bolt out.
On the 345 that I dismantled, it had at some point had a replacement engine installed. The front cross member had the rivets ground off and replaced with bolts. In the near future I will be installing a 454 in my Argosy and I've already ground off those bolts and removed the cross member. A mod worth making in my opinion.

Brad
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Old 11-02-2015, 02:23 PM   #94
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Brad
In the manual that I have for my 32.5 with the Isuzu it says to remove that cross member to re & re the engine.It says to grind off the rivets and replace with bolts
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Old 11-02-2015, 02:38 PM   #95
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Mel,
For your reference, here is some pictures I got from Dave(WXBouy), of his Original 6BT installed in his 345. Hope this is OK to post Dave...

Doghouse looks normal, like mine.


You can see the setback/position they mounted it in here.


And here, for reference, is the pic that GWBaker took of his engine swap...
And now I see that his MH was a '79, so the doghouse is different and explains the issues he had with the pushrods he mentioned.
Note how different the engine postion and maybe doghouse length is, and also note how the turbo/exhaust is mounted lower.

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Old 11-02-2015, 02:44 PM   #96
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That first pic of a Cummins installed is w/o intercooler and turbo looks rotated up compared to donor.

Mel hope you can run intercooler somehow.
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Old 11-02-2015, 03:19 PM   #97
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Brad
In the manual that I have for my 32.5 with the Isuzu it says to remove that cross member to re & re the engine.It says to grind off the rivets and replace with bolts
John, your comment prompted me to look at the service manual for the 1984 310. It basically says those front frame members need to be removed to remove/install the diesel engine in the chassis.

Attachment 251549

Looks like Mel is going to have to remove some frame members before he can stuff that engine in there.

I wonder why that 345 had the frame member removed? My Argosy has had the 454 removed and the frame member was intact.

Brad
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Old 11-02-2015, 03:33 PM   #98
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Frankly, I think I would remove it whether I HAD to or not.


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