My wife and I just acquired this beauty and have decided to get her back on the road. We may have saved it from the scrap yard. What the heck, it was free not counting the near $200 to get her home.

We are on a tight budget and will be doing the vast majority of the work with reclaimed, used/scrounged and refurbed materials and parts.

Looking forward to the project and excited to find this valuble resourse to assist and document the endeavor.

Thanks in advance for your assistance.

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I admit I had to google it. Never heard of a Ford 400. Made from '71-'82 apparently. 

351m 400m modified  replaced the 360 390 fe engines share same bell housing as 460 was a cross between the 351cleveland and 429


Ford's use of the 400 block in the creation of the 351M engine has resulted in the 400 mistakenly being referred to as the "400M" or "400 Modified." This is despite the 400 having been the design basis from which the "modified" 351M was derived and it was in production several years before Ford used the "M" designation. Further confusion arises from Ford printing "351M/400" on the emission stickers for the engine. The "351M/400" referenced the engine family, but it may be confused as the engine name. Ford's official name for the 400 V8 contains no additional designations - the proper nomenclature is simply "400."

is it still 2 barrel or has it been converted to 4 and a later e4od for a 460 will behind it with stand alone computer

Thanks for the pricing and info Bob. You sure know your engines.

your  welcome Ive been a mechanic most of my life my grandfather started me out on small engines as soon as o could hold a wrench Ive worked on everything in between i hope i helped

Thanks Bob.

You think the 400 is enough to work on this beast?

up the cam to 480 lift if comp cams still have 484 lift 280 duration works great 4 bl manifold with 600 650 Holley double roller timing chain advance able to 4 deg advanced to compensate for the stock cam factory built in negative advance to pass emissions and high volume oil pump to compensate oiling issues as it ages be plenty of power last set i built was in 77 f350 pulling 30 ft 5th wheel pull i 70 Eisenhower at speed limit at 5 to8 percent grades

The 400 M get's HORRIBLE fuel mileage.

I have had a lot of em in 4x4 Vans.

The 400 M and 351 M blocks were the same height as the 460 block, but much shorter in length from front to back then the 460.  They were the same length as the 351 Cleveland and other Ford small blocks.  It was an attempt to create a "smaller" big block.  They also were able to use the 351 Cleveland head that they had designed, after discontinuing the original early 351C.

Hiya Jay-

Don't know if y'all did the repower yet, but an idea for ya is to check the Goodwill and Salvation Army Auto Auctions in your area, if you guys have anything like that near your town...

The Goodwill Auto Auction here in Columbus usually has at least one motorhome on the list, every time they have an auction. 

The last time we went over there and looked, our local GW Auction had a 1990-something Gulfstream 32 footer, it was in sorry cosmetic/structural shape (it apparently lived under a tree most of it's life, so the sides were de-laminating and the roof-edge seams were SHOT) 

BUT... it only had 29,000 miles on it, was an injected 454 with a 480LE auto, it ran and drove GREAT...

The whole shootin' match sold for $275.00!!!!

We were going to bid on it, and use the motor and trans to repower our Travco 320... but somehow FORGOT to go to the auction on the day it happened! Dernit.

Anyhoo... like I said, they usually have at least one motorhome at our local auction, they're usually super-low mileage, and they usually sell for a song.

The upside to it would be that you'd not only get a "new" engine, but more than likely a "new" generator, plumbing, cabinets, furniture, beds, tires, wheels, etc...

Just wanted to give you guys that idea, maybe it'd help.


Slick and Kathy Ramey

Columbus, OH




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