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1 24th August 09:13
mach1cobrajet
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Posts: 1
Default 1981 f150 460 swap?


Looking throught the classifieds today i found a 1981 f150 step side
4x4 with 400 4spd. the truck has a bad clutch and needs a new one. i
know that the 400 and the 460 use the same transmission, but will the
4spd hold the power of the 460. Also how hard will it be to put a 460
in this truck and what parts will i need. the 460 i have is out of a
73 thunderbird with a set of 68 heads on it. Any help would be greatly
appreciated.
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2 24th August 09:13
my name is nobody
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Posts: 1
Default 1981 f150 460 swap?


The transmission for the 400 will work fine with a 460. Chances are the
exact same transmission was used behind both engines.
You will need a truck oil pan and oil pickup tube for that truck pan.
You may need different 460 truck motor mounts, they could be the same as the
400's.
Some of your accessories (alternator, air-conditioning compressor etc.) and
their brackets might need some modification.

Your decades old car application engine and water pump may not have outlets
in the same places as your existing radiator and hoses....

Hope this helps, and good luck with your project.
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3 24th August 09:13
snoman
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Posts: 1
Default 1981 f150 460 swap?


It should be a NP435 if it has the old 4 speed "granny gear" tranny
and it is up to the task.
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