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Will a 1940 Packard 8 be the same as a 1935?


Ed Luddy
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Looking for help/advice on subject I know nothing about. My friend has a 1935 Packard sedan that needs an engine. It's a 8 cylinder car. I know of someone else who has a 1940 straight 8 Packard engine/ transmission combo for sale in running condition. Are they fairly close as far as doing a retro fit? I'm trying to keep him from putting in the latest fad LS Chevy swap!

  Any help is greatly appeciated!

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Ed,

 

You need to determine just exactly what '35 Packard your friend has, 120, Eight or Super Eight? And what the '40 Engine/trans came out of, 120, 160 or 180? If both are 120's then it should be a relatively straight forward swap. Although the '40 trans will be a column shift while the '35 is a floor shift, so use the '35 trans. The other engines are inherently "different" but it should be possible to change them over.

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I think I can say that any 1940 engine won’t be an exact match for a 1935.  Super Eights, 37-39 were close and crankcases were the same, blocks with minor differences . 1940 was a different engine.  A rebuild of his engine may be in order...

 

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I'll second what Ozstatman says - it really depends! If it's a 120, it is almost a near bolt-in. Senior Packard, I know there are a lot more differences, but my knowledge ends there.

Good luck!

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Interesting that the 120 would swap, so my comment is incorrect for a 120.  I’m fairly certain Senior engines of those years are not a bolt in swap, surely someone know for sure...

 

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"Senior" engines 1939 and prior had separate aluminum crankcases together with a cast iron cylinder block which bolted to the rankcase. While 1940 and later 356's were a new design being "enbloc" with the crankcase and cylinders cast in one piece. I expect you knew that already.😉 I "think" the 356's had a yoke type front engine mount "similar: to the 120's. Whereas the engine mounts on the '39 Seniors and prior were different. Bellhousing and transmissions were also different.

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You guys pretty well covered it. However the spectre of a 356 in an early 120? Thanks for ruining my day! I'm going to be thinking of the possibilities now, I mean think about it, an early 120 with 12cyl HP? Be still my heart!

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On 6/1/2021 at 2:03 AM, Highlander160 said:

 However the spectre of a 356 in an early 120? Thanks for ruining my day! 

Packard issued General Service Letters for the retro fitting of 288 engines in RHD 120's if a replacement 120 engine was not available. if you can do it with a 288, then a 327 or 359 would also fit. If you could do it with a 288/327/359 then a 356 is also possible. This LINK will take you to the GSL's over on PackardInfo.com(Having trouble linking to them directly).

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