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Dodge 440-3 engine block

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Dodge 440-3 engine block Andy 7-8-01  
Can anyone tell me where i can get a dodge 440-3 engine block for my 78'executive coach, i live in northern california. or will a 440-1 block work? i have one of those. please email if possible i am desperate!
Re: dodge 440-3 engine block Harold 7-9-01  
Can anyone tell me where i can get a dodge 440-3 engine block for my 78'executive coach, i live in northern california. or will a 440-1 block work? i have one of those. please email if possible i am desperate!

I could be wrong but I think that the blocks are the same. The difference is in the crank and cam. Have you checked with a good mechine shop? a good shop will be able to tell you what is difference is. Harold
Re: Dodge 440-3 engine block Mark 9-25-05  
I know it's been many years but for anyone still looking for an answer to the differance between a 440 and a 440-3 this will help

What does the "-3" stand for at the end of 440 engines?

This is part of the block casting # 440-3 (the full # being 3698830-440-3) which is cast on the side of the block. This number is for 73-78 440's. As far as the -1 or -3 designation, the-3 would mean heavy-duty applications (such as an RV) and the -1 meaning light duty. Distinguishable differences include the -3 has a heavy-duty forged crankshaft that is slightly longer than in other 440s, the coolant passages in the block are larger, the block is taller, and the heads are slightly further apart. It seems that although many parts do interchange, as many or more do not. The distributor may be longer on the -3. Exhaust manifolds and headers may require some clearance room to interchange, and intake manifolds from the -1s can supposedly work on a -3 with a spacer.
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