300 to 351w swap

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jesse_h97

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I have an 83 with a 300 and standard transmission, and an 84 with a 351W automatic. I want take the engine and transmission out of the 84 and put in the 83. Has anyone done this? What I really want to know before I start this project, is if the motor mount holes will be the same and will the automatic transmission bolt up to the frame where the manual was.

 

BLADE262US

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Yes it will go in there the holes are stamped in the frame . You will need to completely remove the six mounts from the frame and when you pull both motors you will see exactly what has to be swaped . The V8 motor frame mounts are attached to the frame with acorn rivets so a torch is a must and then just bolt them in the other frame . And yes the tranny will bolt to the same crossmember . Sounds like you have everything you need to do it even a real live schematic . :D /emoticons/[email protected] 2x" width="20" height="20" />

 
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jesse_h97

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OK thats what I was hoping. have you done this before? what about reverse lights? just splice the external wires together as they come off the transmission?

 

BLADE262US

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LOL yes I have done that before look at the top right I think it is on the home page and theres a button there that says search put my name in there and look for a post that said LOOK WHAT I DID , That truck started life as an 81 F150 2 wheel drive with a 300 6 , I am fixing to put together another I have here and the frame was a 92 with a 300 6 so I have to take out all the mounts just like I told you and put in all the V8 mounts I have . As for the backup lights its the black with purple tracer wires that come from the switch there are 2 one has 12volts on it all the time and the other goes back to the lights . :D /emoticons/[email protected] 2x" width="20" height="20" />

 
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jesse_h97

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looks good, i prefer the 351 auto to the 300 manual when it comes to lager tires, i think i would just go through clutches.

 

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