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400M compared to 460?
Senior User
Joined: Jan 2001
Posts: 223
Likes: 0
From: Coquitlam, BC Canada
400M compared to 460?
I was just wondering If anyone had a 400 and a 460 and how they compared?, as far as power, gas milage, overall performance?.
Thanks alot,
1979 F-250 400M 2wd,
Joe
Thanks alot,
1979 F-250 400M 2wd,
Joe
Posting Guru
Joined: Dec 1999
Posts: 2,351
Likes: 0
From: Benton County, MN
400M compared to 460?
The 460 is going to give you more power with a lot less add ons. From what I have heard from other guys on the board both of these engines weigh about the same. The 400 will probably take a little bit more to get as much pep out of it than a 460 and I could not mileage being any different between these two engines. But this depends on how either is built. My 2 cents
People who say it can't be done should not interrupt the person doing it.
People who say it can't be done should not interrupt the person doing it.
Senior User
Joined: Jan 2001
Posts: 223
Likes: 0
From: Coquitlam, BC Canada
400M compared to 460?
I'm just not happy the way my 400 is running right now and its almost time for a rebuild, and I can probably get a 460 for pretty much free but it needs to be rebuilt to.
Just trying to figure out the pro's and cons,
thanks again,
Joe
Just trying to figure out the pro's and cons,
thanks again,
Joe
Posting Guru
Joined: Aug 2000
Posts: 2,416
Likes: 4
From: PacNW
400M compared to 460?
Don't forget to add about $500 to the cost to swap in the 460. Motor mounts, accessory brackets, etc. That doesn't include the cost of the headers...
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Postmaster
Joined: Feb 2000
Posts: 2,759
Likes: 2
From: Auburn,Al
400M compared to 460?
why does he have to run headers?
1985 F-150/351Ho/4wd
1979 f-250 429(stout 460 on the way)/4spd/6in w/36's,Dana60/44hd,3.54 gears~4.11's comin soon
on a quiet night your can hear a chevy (lol,you can watch a dodge) rusting away
1985 F-150/351Ho/4wd
1979 f-250 429(stout 460 on the way)/4spd/6in w/36's,Dana60/44hd,3.54 gears~4.11's comin soon
on a quiet night your can hear a chevy (lol,you can watch a dodge) rusting away
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Posting Guru
Joined: Aug 2000
Posts: 2,416
Likes: 4
From: PacNW
400M compared to 460?
I didn't say he had to run headers but otherwise he'll have to scrounge around and find some stock manifolds that will fit the truck. Either way it's just more money he'll have to add to the cost of the swap.
