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Old 03-27-2014, 21:21   #1 (permalink)
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New or rebuild

1974 LTD Triple white. Pretty good shape. 400 cid. Contemplating a replace or rebuild of motor. Any input is appreciated. Actually, if it's not crazy expensive, I'd like to replace with a 460.
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Old 03-28-2014, 07:37   #2 (permalink)
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Re: New or rebuild

It's difficult to respond to your post without a little more information, but generally, the 460 would be the way to go for more power and torque.
Either option is viable, but here are just a few of many things to consider.
How much experience do you have rebuilding and swapping engines?
What do you have for tools and shop area?
How much do you plan to spend?
A 460 swap would (probably) require another (C-6) transmission if you now have the cast iron FX trans. The swap would also require some fabrication and junkyard searching for hard to find (old) parts, not to mention front suspension mods to handle the increased weight.
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Old 03-28-2014, 09:20   #3 (permalink)
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Re: New or rebuild

Although I'm tremendously handy and adept at many things, in depth auto repair isn't one of them. That, coupled with the fact that I don't have the room or time to do it right dictates that I'll be paying someone else to do this. Does that change things?

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Old 03-28-2014, 17:24   #4 (permalink)
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Re: New or rebuild

A little.
Talk to the mechanic, get prices, then decide. "Speed cost money. How fast do you want to go?" (Stroker McGurk, circa 1948)
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Old 03-28-2014, 20:58   #5 (permalink)
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Re: New or rebuild

I think the physical fit of the 460 wouldn't be too difficult but as Baja suggested, there will be extra weight of which I think would be about 150lbs extra for the 460. It will depend on your transmission but the trans housing bolt pattern should be the same.
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Old 03-29-2014, 09:04   #6 (permalink)
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Re: New or rebuild

Big block is right, but my concern was the old FX transmissions seemed to crack and not be able to handle the torque of a 460, and I am not aware of any modifications to improve the trans.
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Old 03-29-2014, 09:22   #7 (permalink)
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Re: New or rebuild

Anybody know of any quality mechanics in the ATL area that they'd recommend?

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Old 03-29-2014, 16:06   #8 (permalink)
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Re: New or rebuild

Most repair shops shy away from modifying oldie-but-goodies. I would start hanging out at cruise night locations and get to know some local hot rodders. They'll usually steer you straight and will know who can rebuild or modify your car. Besides, it's a good excuse for a burger and fries.
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