Please help with an engine swap
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4wd High
Joined: Aug 2021
Posts: 9
Likes: 1
Please help with an engine swap
I have a 1981 F350 dump truck that blew a head gasket that cracked the block. This was a rebuilt 351 m and I would like to exchange the motor to keep the truck until this shortage is over and used trucks are more available. The problem that I am having is the lack of motors in 351 or 400. What would be needed to put another engine in it and which engine would work. This truck is mainly for farm work and hauling junk.
Thanks Nick
Thanks Nick
Tuned
Joined: Apr 2008
Posts: 331
Likes: 9
I have a 1981 F350 dump truck that blew a head gasket that cracked the block. This was a rebuilt 351 m and I would like to exchange the motor to keep the truck until this shortage is over and used trucks are more available. The problem that I am having is the lack of motors in 351 or 400. What would be needed to put another engine in it and which engine would work. This truck is mainly for farm work and hauling junk.
Thanks Nick
Thanks Nick
Moderator
Joined: Jan 2001
Posts: 56,977
Likes: 2,733
From: Virginia
You could put any engine in there if you got the transmission with it. Or the bellhousing if it's a manual transmission. A 460 would bolt to the motor mounts. It would bolt to the 351m bellhousing but you would have to check for flywheel clearance. Or just get a 460 bellhousing if the 460 flywheel rubbed.
Whatever engine you get, just make sure it's a rear sump style oil pan.
Whatever engine you get, just make sure it's a rear sump style oil pan.
Moderator
Joined: Jan 2001
Posts: 56,977
Likes: 2,733
From: Virginia
None of those engines are made anymore. But at least the others were stopped in the late 90's. The 351m/400 engines stopped production in the early 80's.
Tuned
Joined: Sep 2014
Posts: 469
Likes: 103
Powertrain products has long blocks.
I purchased a long block from them about 5 years ago.
I am at about 25k miles and am very happy.
I purchased a long block from them about 5 years ago.
I am at about 25k miles and am very happy.
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Mountain Pass
Joined: May 2012
Posts: 186
Likes: 1
From: Voorhees NJ
I can see from your profile that you’re in PA. I’m in the south Jersey area and have a used 351m. It’s missing some parts,but all in all a good motor. It’s your if you want it.
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