460 vs 351 Windsor
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Senior User
Joined: Oct 2005
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460 vs 351 Windsor
I have a 79 with a 460 and want to put a 351w in. Are the frame perches the same or do they have to be changed? Also if they have to be changed would any of you happen to have some you would sell?
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Senior User
Joined: Oct 2005
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I know the c6 won't work I have a 4 speed goin in it too. The 460 is useless for me all it does is use a lot of gas. I'd rather get good gas mileage and have a low first gear than have that big *** motor with a useless automatic on it's last leg any day
Senior User
Joined: Jan 2004
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From: denver
I cant speak about the 460 motor mounts, but the 351M/400 mounts are the same as 302/351 mounts. 300/390 mounts are different.
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Posting Guru
Joined: Dec 2009
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From: Mississippi
I have had 3 dentsides with V8s and none of them got what I would consider anywhere near "good" gas mileage. How bad is the 460? I had a 79 shortbed auto with a 351m and it didnt get any better than the 79 f250 with the same motor, as I recall 8- 12 mpg roughly.
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Lead Driver
Joined: Mar 2010
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From: West Virginia
my toy 77 super cab is getting a 460/c6. lol. So there goes your theory on the toy theory. lol.
Seriously though, gas mileage is much more a factor of tuning, gearing, and driving style than anything else.
Lifts and big tires will kill gas mileage no matter what, but with reasonable street tires, higher gearing to keep the rev's down, a carb that is properly tuned and jetted, and an alignment to make sure the tires aren't scrubbing at all, gas mileage shouldn't be that drastically different between motors. If fuel mileage is really the primary concern, I have a 300 straight six i'll sell you cheap. :-)
Or you could try swapping in a fuel injected 302 which will get about 150% of the mileage of the closest carb'd truck...
Seriously though, gas mileage is much more a factor of tuning, gearing, and driving style than anything else.
Lifts and big tires will kill gas mileage no matter what, but with reasonable street tires, higher gearing to keep the rev's down, a carb that is properly tuned and jetted, and an alignment to make sure the tires aren't scrubbing at all, gas mileage shouldn't be that drastically different between motors. If fuel mileage is really the primary concern, I have a 300 straight six i'll sell you cheap. :-)
Or you could try swapping in a fuel injected 302 which will get about 150% of the mileage of the closest carb'd truck...
Lead Driver
Joined: May 2007
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From: Costa Mesa, CA
My toy theory???? You are the one that said "It must not be a toy..."
I simply replied mine is a toy - a purpose built one and will get a 351w.
My "toy theory" is - it's your toy, put whatever the heck you want in it.
I just don't buy into the "gotta have the biggest, over weight, gas guzzling, blah blah blah" that goes on around here.
My stroked 351w weighs a heck of a lot less than a 460 and will still put out 500hp. good enough for what I'm gonna do with it
I simply replied mine is a toy - a purpose built one and will get a 351w.
My "toy theory" is - it's your toy, put whatever the heck you want in it.
I just don't buy into the "gotta have the biggest, over weight, gas guzzling, blah blah blah" that goes on around here.
My stroked 351w weighs a heck of a lot less than a 460 and will still put out 500hp. good enough for what I'm gonna do with it
Zombie Survivalist
Joined: Feb 2009
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From: Rock Springs, WY, USA
unless your truck is geared to low to begin with. if youre runnin 4.10s or 4.56s at highway speeds, some bigger tires will drop your rpms and help your fuel mileage. i know, ive done it.
not necessarily. a properly tuned carb motor will run right with an identical EFI motor for mileage. or do better in the case of the late 80s and early 90s ford fuel infection...
not necessarily. a properly tuned carb motor will run right with an identical EFI motor for mileage. or do better in the case of the late 80s and early 90s ford fuel infection...
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Joined: Feb 2010
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Im positive you wont be happy with the results. It will be a turd at best. Thus meaning you will be smashing the loud pedal to the floor to try and get it to move at what that big block did at 1/4 throttle and will be burning the same amount if not more gas. Those windsors are neato in a 2500 lb car but you put em in a 5000lb truck and the torque just isnt there. i get 11.5 mpg in a 85 f-250 with a 460 thats doin 75 down the highway. look into your tuning and keep in mind its not a civic. You want gas milage put efi and an e40d on that 460. 15 mpg. The cost in any of these changes will take you forever to get back out of the effect.