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Old 06-28-2012, 08:22 PM
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429 in 68 cougar j-code

Have 72 429 ,clean unstuck, need to find proper brackets and mounts for this swap. Motor came with what I assume are 390 pads but everything seems about 1 inch too low. Any ideas ?

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Old 06-28-2012, 09:26 PM
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I thought the J-coded Cougars were 302s, and the biggest engine they got was the Q-code(IIRC), and the 429
is wider than the FEs...
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Old 06-28-2012, 09:56 PM
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I am probably wrong on this, but I seem to remember the 1968 "big block" option for Mustangs, and Cougars was the FE series block. (390, 428)

About the only thing that the FE engines have in common with the 429 engine is they both need oil. I do not think the transmission will bolt up, the motor mounts line up, or much of anything else to fit.
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Old 06-29-2012, 08:30 PM
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Auto-Krafters used to offer a kit to do this,my car was a 302,had one in mid 70's and wasn't impressed with power! Anyway, kit became obsolete in nov. of 2011 so I know its possible, just need to find correct parts.
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Old 06-30-2012, 05:15 PM
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When they shoe-horned the 429 engine into the '69 Boss 429 there were quite a few mods to get it to fit. I don't know if its reasonable to make the same mods to your Cougar, and its probably going to require a lot of fabrication.

Bruce
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Old 07-01-2012, 06:14 AM
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It can be done MPG Heads - Motor Mount Header Kit

There is a yahoo user group with a bunch of guys who have done the same thing. 429-460Stangs : Classic Mustangs with 429/460 swaps

The 72 if stock is probably the least desirable 429 produced. It is the only year they had open chamber heads. I highly recommend a head swap, timing chain replacement with non-retarded early timing set and a distributor recurve.

Also notching the shock towers is highly recommended as well.
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