Hey guys, I ususally hang out on the '48 to '60 forum, but I have a '94 F150 too. It has 220,000 miles on it and still runs "ok" but dont have what I call plenty of power. It already gets crappy gas mileage 9-12 MPG's so I thought I might change it over to a 460? Anybody over here done it? I actually have an old 1970 model 429 engine that has 1owner 70,000 miles in a station wagon, but I'd have to update the heads so it would run on this junk gas we have now. I'd like to have the brackets from a latemodel 460 one belt drive to go on it (if they'd fit) I just wondered if anyone had done this swap and knew any pitfalls to watch out for? I'm not even above ditching the EFI stuff and going carb, but I'm afraid of losing my dash stuff? I Know the speedo is driven off my rear end diff speed sensor but dont know how much computer stuff would have to stay connected to keep it running? Any ideas? Thanks for any input.

 

My uncle had a 1995 F150 RC/SB 4x4, jacked up with a 460 in it (also started with a 351w oddly enough). Also had an automatic transmission, not sure which one though, but it had OD. It was technically a 460, I think it was a 482 or something goofy, bored over. Pushed 500+ horse, and 650 ft/lb of torque. His motor was a 70s block out of a car. He had a carb on it to avoid EFI headaches, and he had all aftermarket gauges (speedo, tach, volt, oil temp, oil pressure, fuel pressure). This was also his daily driver for several years. I know when he first did the swap he had tried to use the factory gauges and stuff but it was a giant headache. He had a serpentine belt system also. I'll have to ask him some more questions about it for you.

 

You'll need motor pads from a F250/F350. I'd stay fuel injected, unless emissions isn't an issue.

Best bet is to grab everything from an F250/F350 with a 460.

You will need a tranny from a 460; they are different.

 

That's easier to fix than put an 460 in the truck because the smallblock trans won't bolt up and the 8.8 diff won't last long. If you want to retain EFI that also means you'll need a EFI heads and intake for that old motor and a 460 computer and if you're lucky there won't be too many wiring changes to make.

Dash gauges don't go through the computer so it's not a hugh deal to get them working with a carbed motor but you do have to supply the correct inputs which means installing a temp sensor in the carb intake, a tach signal from the distributor, and a speed input from the rear axle.

 

That is kind of what I was thinkin so far. I'm not goin to be shredding the tires too much or too hard on it so the rear end will do just fine. I have the engine and trans out of the same car, so I have everything as far as that goes. Right now I could go either way carb or EFI? I'm just in the planning stages. I know I could just rebuild the 351w but its just never goin to be a powerhouse in that heavy of a truck. Its an extended cab but it does have a flareside bed on it so it may or not weigh more or less than a regular bed? Right now it has 3:55 gears in it but I may change them out for some higher ones if I go to the 429/460 carb cause I dont have an OD trans and will just adjust RPMs with the final drive ratio. Thanks for the help.

 

That is far from the truth. You can build a screaming small block that will outperform most big block trucks you come up against. Keep in mind that the small block doesn't weight as much as a 460, 429, or 7.3 or 6.9 diesel. You can always make the 351 into a 408 stroker and pull more than 400 horse.