460 swap on a 72 Mustang base

I currently have a 1972 mustang with the 302 that id like to do some modifications to but trying to decide what avenue to go, I have a 1985 f250 with the 460 big block that I will be doing a engine replacement on in the near future however Ive been debating using the old engine and having it rebuilt to put in my mustang. Im wondering if anyone has ever done this swap before if itll fit inside with factory mounting locations or if itll become a custom fabrication job and if it is possible what would be a good transmission to go with it?

I have a 460 in my 69 and it's a hoot. Cheap HP and tons of torque. The 429 came in 71 Mustangs, as far as I know it is a bolt in.
Lots of info here: http://429mustangcougarinfo.50megs.com/

The 71-73 were designed especially to accept the 429. Engine wise you only need 385 series engine mounts similar to 429. For the trans, I don't know what you have but you can have a pretty big bell housing as it was the case for the C6/429 combo without any firewall/tunnel issues. Drive shaft length depends again on your trans (and governor type/length if automatic). And you will have to find a set of headers that fits.
Good luck!

Call Roy. He can make the engine brackets to fit small block pads. 815-627-9410. I have the comp headers new if you need. $550 + freight

Roy built a pair of block brackets for me this past winter, though I had located a pair of the 429/71-72 Convertible frame mounts. The block brackets are the hardest part to find IMO. Immaculate work and very nice. He even milled a "R" and "L" into them. First class guy. Highly recommended!

t.kohlmeyer said:

Roy built a pair of block brackets for me this past winter, though I had located a pair of the 429/71-72 Convertible frame mounts. The block brackets are the hardest part to find IMO. Immaculate work and very nice. He even milled a "R" and "L" into them. First class guy. Highly recommended!

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Do you have a picture of the brackets and mounts you ended up using?
I'm trying to do the same thing that you've already done by the looks of it!

I can give you pics of mine. The man you want to talk to is Roy as listed above. Here's what he made for me.

Thanks! Those are some stout looking brackets. Do you (or anyone else here) have the dimensions? I'll make myself a set if I can get measurements.

Roy didn't charge a great deal and he has jigs made up to use any frame brackets you have, even the '73s. 71-72 both are the same, but the '73 are unique since Ford went to the retention style motor mounts due to federal regulations. Give Roy a call. He's a nice guy and you'll likely be surprised at the quote he'll give you. He starts with a C4 channel and welds ears on to attach to the motor mounts. They're heavy, but you'll likely never break them, even in drag racing applications. I know a few members are running his brackets.

You can also buy the engine mounts as a set online. They are listed under 429-460 conversion kit.not sure on the price.

You all work entirely too hard. A 460 in a 71-73 is a bolt in, it was designed for it.

For motor mounts, use the stock idolators that bolt to the block.

Then swap the brackets that bolt to the frame side-to-side, and elongate a couple holes.

For more see my post here.
https://7173mustangs.com/threads/351c-to-460-swap-opinions.44673/#post-450164