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440 vs 383 Questions

New Member
Posts: 29
From: Winchester, VA, USA
Registered: Dec 2001
posted 07-04-2002 09:10 AM

Okay, I am feeling a little stupid right now. I need to know the differences between the 383 and 440 engines. What parts are interchangeable (heads. intake manifold, exhaust)???

Moparts Member
Posts: 413
From: Annapolis, MD, USA
Registered: Aug 2001
posted 07-04-2002 09:18 AM

Not interchangable:
Block, crankshaft, pushrods, rods, pistons, intake manifold
Heads, cam, exhaust manifolds, oil pan, windage tray, timing chain & gears, water pump housing.
I'm sure others will add to this list. And no need to feel stupid. If we all knew this stuff we wouldn't need Moparts.

67 satellite
Moparts Member
Posts: 241
From: Andrews In.
Registered: Apr 2000
posted 07-04-2002 09:24 AM

The heads&rockers,ex. manifolds,fuel&oil pumps,oil pump drive,sheetmetal parts,motor mounts interchange between the two.SOME accessory brackets and dampers might interchange.The rest is different due to bore/stroke,crankshaft dimensions,and deck height differences.If I missed anything someone feel free to add it to the list.

451 Jim
Moparts Member
Posts: 1574
From: Lexington Park Maryland
Registered: Dec 2000
posted 07-04-2002 09:54 AM

Since the intake manifolds are different widths the valley pan and the valley pan holddowns (front and back) are different between the two engines also. The 440 holddowns can be trimmed to work on a 383 since the bolt hole spacing is the same.
The rod bearings are the same, but the mains are different.

Moparts Member
Posts: 1761
From: Walled Lake, MI
Registered: Oct 2001
posted 07-04-2002 09:59 AM

Distributor is different as well- RB block one is longer.
However...you can put a 440 crank in a 383. You just have to get it machined

info provided by members listed above


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