351 vs 460
Lead Driver
Joined: May 2007
Posts: 5,613
Likes: 9
From: Flagstaff, Arizona
be prepared to get around 8mpg for either. 351 will have to work very hard to move those tires.....and the 460 will do a better job of it, but is a thirsty motor to begin with. What about a Diesel or V10? Changing gearing could help......but then the money you gain in mileage is already sunk into the gear changeout!
Posting Guru
Joined: Jul 2007
Posts: 1,433
Likes: 2
From: Spring Lake
Go with the 460, it's just all around better. Especially if it's one of those 351-M's. Those are just bad, the windsor aint a bad motor, but sounds a little weak for your application.
Think of it this way, if you lift ur truck 8 inches, you will most likely get better fuel economy hanging out the window just dumping fuel out of a gas can... if you are going to be broke, do it the right way
Think of it this way, if you lift ur truck 8 inches, you will most likely get better fuel economy hanging out the window just dumping fuel out of a gas can... if you are going to be broke, do it the right way
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Hotshot
Joined: Jun 2003
Posts: 12,340
Likes: 4,357
From: SW VA
38" tires and 3.55 gears? Both engine's will feel like 4-bangers with that combo. Get some gears first! 4.88's should work wonders.
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Postmaster
Joined: Jan 2004
Posts: 4,758
Likes: 7
From: colorado
yea... i had a '95 bronco with 32" tires a 3 inch lift, 3.55 grears and the 351 and that thing was an absolute PIG!!! there where times while towing my boat it couldnt get out of second gear in a strong head wind
Post Fiend
Joined: Feb 2007
Posts: 7,191
Likes: 4
From: Blairsville,Ga
Originally Posted by 5.4L to Freedom
Go with the 460, it's just all around better. Especially if it's one of those 351-M's. Those are just bad, the windsor aint a bad motor, but sounds a little weak for your application.
I still have one I bought new in '79 with over 250k miles pulling an 8k lb load on its back daily
Senior User
Joined: Dec 2007
Posts: 449
Likes: 0
my 77 250 4wd 8 ft narrow bed that i got new had a 351 m. it was locky to get 8 mpg, the 460 got 14!,,,i changed the late cam timing gears to the erly ones. its worth 25 hp and e z to do before you intal it. the only problem, you will tear up te transfer case blowing off the little chevy 350 trucks,,hehe. find a 350 trans & transfer case. a 77 or earlieris best. just got through it. the 460 is a real torque monster. you may have to rotate the case down to reduse the front shaft angle.