I am swapping out my old 300 six and want to know if I would be better off going with a fuel injected 302 or should I go with a carbureted 351w. I was told buy a mechanic that the fuel injection would be better, but I just dont know. I use the truck mainly to haul wood and occasionally I pull a horse trailer with it. I want plenty of power, but I also dont want to spend thousands on gas. (Even though thats gatting hard to do with any motor any more!!!) Thank you for any help.
86

 

fuel injected 302...came in about everything ford made that was rear drive...easy to come by...better mileage(unless you've got some big **** tires) and they are still relatively cheap. good luck in whatever you do, personally, i think i've bout lost it, i've got a 460 i wanna put in my 300i6 88.
mike

 

Alot depends on your mechanical and electrical prowess in switching over to the fuel injected system. The fuel injected 302 would most likely get better mileage than the carbed 351 if correctly installed. If you have to hire the project done, it will probably cost big bucks.

DannyP
89 F-150 4x4 former EFI I-6 now carbed 351W, Edelbrock heads,cam,intake,carb.
MSD 6A, ZF, Sterling 10.25 with 3.55L's.

 

I was just wondering which of the motors would be better to swap in. What is the power comparison of the two? Thanks for the help.
86

 

Why not a fuel injected 351? For ease of installation, carbed motor goes best into carbed truck and EFI motor goes best into EFI truck. Swapping carb for EFI or vv can be done but is extra work. Some power numbers to give you an idea: 87 302 EFI 185hp/270ft-lbs, 86 351W HO 4V 210hp/310ft-lbs, 88 351W EFI 210hp/315ft-lbs.

1979 F150 Custom: nothing under the hood at all (again)
1987 F150 XLT Lariat: 88 351W EFI
75 351W: soon to have 91 heads, ?? cam, double roller timing chain, Edelbrock Performer intake & Holley carb and be put back in 79 F150
84 351W: waiting for ???
Chevy 454: going into 83 Delta 88???

 

Hey were did you get those 351 HO numbers? The correct numbers were 200hp and 300ft/lbs of torque.

Really the carb swap would be simpler than a efi swap. The 1989-older efi trucks have 3 fuel pumps and the intake pumps are low-psi. You can easily remove the third pump and run it to a 4barrel carb. I have a 1989 F-150 4x4 with a warnout 302. I have thought about a 351W, but will probably stick with a 302. I don't plan to use efi, and allready have a carb waiting.

I say if you just use your truck for lightwork and comutting, go with the 302efi.

 

Got the numbers from Chilton's manuals. Yes I know, they're not always right. But it's not my product so I don't have to stand behind it. ;-)

1979 F150 Custom: nothing under the hood at all (again)
1987 F150 XLT Lariat: 88 351W EFI
75 351W: soon to have 91 heads, ?? cam, double roller timing chain, Edelbrock Performer intake & Holley carb and be put back in 79 F150
84 351W: waiting for ???
Chevy 454: waiting for a truck (Mazda?Nissan?)