Found this ad....
THIS IS A COMPLETE 82 FORD 1 TON VAN WITH A GOOD FORD 351 WINDSOR V8 AND C6 AUTOMATIC TRANSMISSION.... I BOUGHT THE VAN AND DROVE IT HOME TO USE THE 351W AND C6 IN MY RESTORED 56 FORD F100.... THE VAN IS COMPLETE WITH GOOD TIRES AND BODY WHICH COULD BE SOLD.... THE MOTOR AND TRANSMISSION WERE EXCELLENT WHEN I DROVE IT HOME. I PLANNED ON MAKING THE SWAP WITHOUT REBUILDING EITHER AS I FELT THE MOTOR WAS FINE AS IS BASED ON MY INSPECTION AND WHEN I DROVE IT AND BOUGHT IT.... SELLERS INFORMATION WAS THAT THIS COMBINATION HAD BEEN INSTALLED IN THE VAN IN THE RECENT PAST BY HIS FATHER.... I HAVE REMOVED THE GRILL, FRONT BUMPER, RADIATOR, ETC FOR ACCESS TO THE ENGINE BUT ALL PARTS ARE IN THE CARGO PORTION OF THE VAN....I HAVE DECIDED THAT I MAY JUST REBUILD THE 312V8 Y BLOCK AND KEEP THE 56 F-100 STOCK AS ORIGINAL. THE ROLLING CHASSIS COULD ALSO BE SOLD, IF FOR NOTHING MORE THAN SCRAP AFTER REMOVING THE ENGINE....

VAN COULD BE PUT BACK TOGETHER AND DRIVEN AS EVERY PART IS THERE....I MAY JUST DO THAT WHEN IT WARMS UP. ...ORIGINALLY I WAS THIS IS A COMPLETE 82 FORD 1 TON VAN WITH A GOOD FORD 351 WINDSOR V8 AND C6 AUTOMATIC TRANSMISSION.... I BOUGHT THE VAN AND DROVE IT HOME TO USE THE 351W AND C6 IN MY RESTORED 56 FORD F100.... THE VAN IS COMPLETE WITH GOOD TIRES AND BODY WHICH COULD BE SOLD.... THE MOTOR AND TRANSMISSION WERE EXCELLENT WHEN I DROVE IT HOME. I PLANNED ON MAKING THE SWAP WITHOUT REBUILDING EITHER AS I FELT THE MOTOR WAS FINE AS IS BASED ON MY INSPECTION AND WHEN I DROVE IT AND BOUGHT IT.... SELLERS INFORMATION WAS THAT THIS COMBINATION HAD BEEN INSTALLED IN THE VAN IN THE RECENT PAST BY HIS FATHER.... I HAVE REMOVED THE GRILL, FRONT BUMPER, RADIATOR, ETC FOR ACCESS TO 1982 THE ENGINE BUT ALL PARTS ARE IN THE CARGO PORTION OF THE VAN....I HAVE DECIDED THAT I MAY JUST REBUILD THE 312V8 Y BLOCK AND KEEP THE 56 F-100 STOCK AS ORIGINAL. THE ROLLING CHASSIS COULD ALSO BE SOLD, IF FOR NOTHING MORE THAN SCRAP AFTER REMOVING THE ENGINE....

ONLY INTERESTED IN THE MOTOR AND TRANSMISSION BUT IT IS AN EXTENDED FORD E 350 VAN AND COULD BE USED AS A WORK VAN. IF IT SELLS I WILL JUST REBUILD THE 312 V8 IN THE 56 AND KEEP IT STOCK. IF IT DOESN'T I MAY GO AHEAD WITH THE MOTOR SWAP. I HAVE SEVERAL CLASSIC CARS SO THERE IS NO HURRY EITHER WAY AND CLASSIC CARS ALWAYS TEND TO BE ONGOING.

 

The 351W and C6 would give you good power but gas mileage isn't going to be great. Expect about 10-12 MPG. I'd also be leary of an engine I had not personally heard run unless you plan to rebuild it...

 

Re: MPG would it be any worse than a 390?

 

Probably not...

 

Hey Boby, are you already running an auto?

 

No, in fact my 3 speed with OD tranny is going out. My engine & granny is from 78 Granada straight six.

 

I have a carburated 351W/C6 in my '86. 10-12 mpg is just about right. I don't have a 390 now but have a 352/C6 in my '66, and it is about the same. I can make the mpg's worse if I enjoy take-offs on a continual basis.

GreatNorthWoods is right on with his mpg estimate. I don't drive very far so mpg's don't get me too excited. I will attest to the reliability of the C6 though. Do you know how long it has been sitting idle. Definately a fluid and filter change to start with.