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  429 -4v Question

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Author Topic:   429 -4v Question
bobbyford72
Journeyman

Posts: 10
From: new jersey
Registered: Nov 2000

posted 05-22-2001 10:08 AM     Click Here to See the Profile for bobbyford72   Click Here to Email bobbyford72     Edit/Delete Message   Reply w/Quote
If a 72' 400m is replaced with a '71 429-4v, will the exhaust pipes bolt right up to the 429 exhaust manifold? I am planning on pulling my 400m out of my LTD and installing a 429 out of a LTD. I have not compared the exhaust manifolds yet. Any help would be appreciated.

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n2oMike
Gearhead

Posts: 1590
From: Spencer, WV
Registered: Jan 2001

posted 05-22-2001 11:32 AM     Click Here to See the Profile for n2oMike   Click Here to Email n2oMike     Edit/Delete Message   Reply w/Quote
I replaced a 400 with a 460 in a 73LTD back in high school and sold it to my brother.

My advice, find a parts car. In typical ford fashion, practically anything that can be different, is.

I remember replacing motor mounts, throttle cable, having a custom exhaust made... and a buncha' other stuff I can't remember right now.

A parts car will make all the difference. A lot of those big cars had 460's, so it shouldn't be too hard. Back then, the junkyards were littered with them. I purchased his running 460 complete (w/D0VE heads) for the grand sum of $125, and didn't have to even pull a valve cover.

Good Luck!

------------------
Mike Burch
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3
http://www.geocities.com/motorcitymustang/cmml/cmml_mburch.html
http://www.fortunecity.com/silverstone/healey/367

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DidgeyTrucker
Gearhead

Posts: 1060
From: Greenbrier, TN USA
Registered: Oct 99

posted 05-22-2001 02:09 PM     Click Here to See the Profile for DidgeyTrucker   Click Here to Email DidgeyTrucker     Edit/Delete Message   Reply w/Quote
I think you'll find the only thing that will bolt up will be the torque converter and the bellhousing. The motor mounts will probably be different. I doubt that the exhaust pipes will line up. Your accessory brackets will not interchange. I replaced a 400 with a 460 in a '78 F-150.

------------------
Tracy M&M #245
1956 F-100 Panel w/460
(3.70 9" for Saturday night, 2.75 for road trips)
1966 F-100 SWB w/351C
(3.25 pos)
Music City F-100's,
1966 GT-350 S/C
(2.78 1st & 3.70 TracLok 9")
Music City Mustang Club
Don't focus on the destination....make the JOURNEY the adventure
Visit my Web site: DidgeyTrucker's Website

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bobbyford72
Journeyman

Posts: 10
From: new jersey
Registered: Nov 2000

posted 05-23-2001 10:22 AM     Click Here to See the Profile for bobbyford72   Click Here to Email bobbyford72     Edit/Delete Message   Reply w/Quote
Thanks alot guys for the info. I have a few more questions.

Replacing motor mounts. Does this mean the lower mount on the frame? Is this mount on the frame welded or bolted? If bolted, a simple bolt up swap from donor car?

Also, does anyone know which set of headers can be used in this application? The car is a 1972 Ford LTD convertible with transplanted 1971 429-4v.
Thanks again.

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