440 ICD engine in my 40c?

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krusty
430 crawler
430 crawler
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Joined: Fri Apr 08, 2011 12:46 pm

440 ICD engine in my 40c?

Post by krusty » Sat Jul 25, 2026 4:23 pm

Yes...I have still not brought back my 40 crawler to life with a cracked block. Its really hard to find donors in Canada.

I hate AI.

Today AI told me the engine from the ICD would fit. So I went out and looked at the engine mount, sure as shart, it looks identical. May measure after dinner.

Anyone more knowledgeable?

Why do I have an ICD engine? One was forsale years ago, did an inframe and put it in a woodsplitter. Just because. It runs awesome. The water pump mount is cracked but I can either have it welded or put an oil cooler on instead. Should be easy to find.

So.....would the 440 diesel swap into a 40C without much headache? Worst case I try it and see 🥳

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Lavoy
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Re: 440 ICD engine in my 40c?

Post by Lavoy » Mon Jul 27, 2026 12:58 am

Extensive headache, requires substantially more than just the engine, and even if you get it in there, eat will eat the transmissiion in about 10 minutes.
Lavoy
Parts and restoration for antique and late model John Deere crawlers.
Owner and moderator www.jdcrawlers.com

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Stan Disbrow
350 crawler
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Joined: Fri Jul 15, 2005 3:13 pm
Location: Raleigh, NC

Re: 440 ICD engine in my 40c?

Post by Stan Disbrow » Tue Jul 28, 2026 6:48 am

Hi,

There were essentially three series of changes to the machine between the 40 and the 440. Most of the parts were changed according to the Parts Catalog.

The main area for your concern is from the small transmission to the large. The power was increased on the 420 from the 40, then again from the 420 to the 440. And that was the gas engine. The Diesel sports even more power from both the fuel change and the change from a 4-cycle to a 2-cycle.

I can see a Detroit 2-53 twisting every shaft and stripping every gear in a 40's driveline.

Heck, that 2-53 would rip up the ring and pinion gear on a 435 wheel tractor if one used it to pull rather than put that extra power out the PTO shaft.

Stan
There's No Such Thing As A Cheap Crawler!

Useta Have: '58 JD 420c 5-roller w/62 inside blade
Useta Have: '78 JD350C w/6310 outside blade
Useta Have: '68 JD350 w/6310, '51 Terratrac GT-25
Have: 1950 M, 1974 4320, 2005 x495, 2008 5045D, 2025 3025E

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