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Old Jul 12, 2014 | 11:37 PM
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Randy Obrien
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frame perches

i need a set of frame perches for a 2wd 300 six cyl. truck. putting a 300 in place of the 390 in my 74 crew cab and the perches are too tall and to far rearward. i moved them to the next set of holes forward but the mount bolts still hit in front of the perches. i would get out the welder and add on to the front side of them because that would be easy enough to do but they seem a little to tall as well and shortening them would kinda suck. im not sure of why there is a difference because iv done this same swap on a 77 4x4 and all i had to do was move the perches forward to the next set of holes and they worked just fine.
 
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Old Jul 13, 2014 | 12:21 AM
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Here is a link to a page on perches but it say FE and I6 are the same ones just moved to different holes in the frame.

Comparison Photos of Engine Perches - FORDification.com
 
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Old Jul 13, 2014 | 05:45 AM
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Originally Posted by EP145
Here is a link to a page on perches but it say FE and I6 are the same ones just moved to different holes in the frame.[/url]
And get motor mounts for the 300.
 
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Old Jul 13, 2014 | 11:03 AM
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i have the mounts for the 300 and moved the perches forward already and i still cant get back far enough. i read that all the older crew cabs had the narrow frame like the high boys, would that make i difference on my perches? i thought moving them was all i had to do as well because iv done this swap before with no problems at all.
 
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Old Jul 13, 2014 | 03:59 PM
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Interesting I have know other ideas.
 
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Old Jul 13, 2014 | 07:27 PM
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me neither, iv changed motors in so many 73 to 79 fords that i forgot which was which anymore but i really dont remember having this problem on any other trucks.
 
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