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Engine Swap
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   Forward Look Technical Discussions -> Engine, Exhaust, Fuel and IgnitionMessage format
 
Jay
Posted 2021-10-31 2:15 PM (#616454)
Subject: Engine Swap


New User

Posts: 4

Hi all,

Just picked up a 1957 Dodge Custom Royal, the 325ci Super Red Ram engine is seized.

Until I have time/money to rebuild it, I want to put in a small block 360 LA engine I have sitting in my garage.

What motor mounts will I need to do the swap?

Any insight would be appreciated!

Jay

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58coupe
Posted 2021-11-01 11:35 AM (#616472 - in reply to #616454)
Subject: Re: Engine Swap



Expert

Posts: 1740
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Location: Alaska
The 360 should have the mounting ears on the sides of the block and your 325 mounts should bolt up. you might have to modify the left mount because of the bolt spacing.
The big question is what transmission will you use as the original trans. will not bolt to the 360.

Edited by 58coupe 2021-11-01 11:37 AM
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mikes2nd
Posted 2021-11-01 9:45 PM (#616497 - in reply to #616454)
Subject: Re: Engine Swap


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i think they all fit up... my 392 went in place of the 325
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58coupe
Posted 2021-11-02 11:52 AM (#616502 - in reply to #616454)
Subject: Re: Engine Swap



Expert

Posts: 1740
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Location: Alaska
No The newer LA 318-360 will not bolt up to the 61 and older trans. without some kind of after market adapter. All of the 55-61 hemi and poly engines will bolt up but not the big block without the proper factory adapter. The 350-413 will bolt up to each other but even the B and RB have a different crankshaft mounting 61 and older vs. 62 and newer.

Edited by 58coupe 2021-11-02 11:56 AM
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wayfarer
Posted 2021-11-07 12:20 PM (#616617 - in reply to #616454)
Subject: Re: Engine Swap



Elite Veteran

Posts: 888
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Location: Peoples Republic of Oregon
Yeah, no, I do not think there is an adapter on the market yet...this is a very small market to serve.
That said, I have such a critter about half finished, just need to finish the block adapter piece.
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58coupe
Posted 2021-11-07 9:57 PM (#616632 - in reply to #616454)
Subject: Re: Engine Swap



Expert

Posts: 1740
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Location: Alaska
Gary, glad to hear you are working on an adapter for this swap, newer engine to older trans. There must be a few people that would be interested.
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wayfarer
Posted 2021-11-08 8:51 PM (#616657 - in reply to #616454)
Subject: Re: Engine Swap



Elite Veteran

Posts: 888
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Location: Peoples Republic of Oregon
Thanks for the encouragement. I started this project about 10 years ago and promptly found 'zero' interest....I'll dust off the pieces if I ever find a small foundry
that doesn't want my right arm as a down payment.
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57chizler
Posted 2021-11-09 12:16 PM (#616673 - in reply to #616657)
Subject: Re: Engine Swap



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Location: NorCal
Interested to see how you're dealing with the converter studs to threaded crank flange interface.
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wayfarer
Posted 2021-11-11 9:32 PM (#616724 - in reply to #616454)
Subject: Re: Engine Swap



Elite Veteran

Posts: 888
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Location: Peoples Republic of Oregon
...it took awhile to sort out the drive parts but I do have a viable solution. If you are ever in the area stop by and I'll show it to you.
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58coupe
Posted 2021-11-12 11:38 AM (#616742 - in reply to #616454)
Subject: Re: Engine Swap



Expert

Posts: 1740
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Location: Alaska
I have not tried but can you remove the studs in an older torque converter and install longer studs? That seems to me the first problem to solve.
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wayfarer
Posted 2021-11-13 8:18 PM (#616810 - in reply to #616454)
Subject: Re: Engine Swap



Elite Veteran

Posts: 888
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Location: Peoples Republic of Oregon
Even if the bolt pattern was compatible, longer studs would certainly then crash into the back of the block...there is precious little room between the flange and block on post-62 engines.
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Stroller
Posted 2021-11-14 10:15 AM (#616820 - in reply to #616454)
Subject: Re: Engine Swap


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Posts: 371
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With what it would take to put in an LA engine I'd use the mula and rebuild the other engine.
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