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Starting to buy everything I need for a 12 valve swap and I’m trying to find the best options for motor mounts. Heard of many people not being happy with the one from diesel conversion specialists. Also I plan on making 600-700 hp.
 

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I used a mount kit from Destined that utilizes common rail Dodge mounts, good mounts but they elevated the front of the engine higher than we liked so we modified the brackets to lower the engine about 1 inch at the mounts
If I did it over again I'd fab up some brackets to work with the Ford mounts
DCS makes good stuff but I'm not a fan of those hotrod biscuit mounts
 
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What’s the issue with the DCS mounts?
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I'm just not a fan of poly mounts, they transfer more engine vibrations to the chassis than rubber.
If I was going to use a biscuit type mounting system I'd use Peterbilt rubber engine mounts.
 

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I've also heard that you should have the same material transmission mount as you do engine mounts (meaning if the engine mounts are poly then the trans mount should be poly too).
Although I've broken this rule (in both directions) a few times before with no ill effects yet.
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I have used both Destroked mounts and DCS. I have to say I like the Destroked design much better. The DCS mounts are built nice but as said above the poly hockey pucks are garbage. The ones in my F-350 are only 1 year old and the are wearing out already. The Destroked mounts in my Excursion are 10 years old and using 20 year old dodge mounts and they are still in great shape.
 
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