Ive read diffrent posts and i get mixed feelings. I own a 1987 Ford f 150 with a manual 4 speed. I have a 300 in it right now but i want more power to go. My truck is fuel injected so that would change things but what all is need to change from the 300 to the 351? and what cost might be? Also is it worth it should i jsut tell my truck and get a diffrent one? I want to know what diffrent parts in need to make the swap.

 

The buy another truck option is one you should really consider, since your truck is fuel injected. Too much trouble in my opinion to switch all the wiring and computer stuff around.

 

[updated:LAST EDITED ON 06-Feb-02 AT 07:01 PM (EST)]I am in the process of doing the same swap. The e40d is being replaced by a built C6, which is non computer controlled. At first i was going to make the truck carbed and screw the emmisions (it's a 1992) but then i decided on a Holly commander 950 digital standalone fuel injection system. The throttle body, computer, harness, and sensors are included in the kit for $1389. You also need a cheap laptop to hook to the ECU and program it. It is still technically illegal, it's designed for off-road use only but i doubt any cops know that. All you need to worry about is an inspection sticker. In some states if you put an old engine into a new truck the emmissions standards follow the year of the engine.

The C6 with the transfer case is the same size as the 2wd e40d (i'm also converting from 2x4 to 4x4) so it appears the mounts and driveshaft will line up. All i have to do is attatch some engine mounts in the right spot and i'm good to go. BTW if you go with the TBI fuel injection the351 might not fit under the hood without doing one of 3 things, installing a body lift ($150) or going with a Holly multiport system ($1000 more than the TBI) Or maybe installing a hood with a big scoop in the center.

-Jon

 

BTW the multiport system will also give you more HP and better gas milage so it may be worth the extra grand.

 

[updated:LAST EDITED ON 23-Feb-02 AT 09:45 PM (EST)]I'm in the middle of just such a swap, except mine is an 85 4x4. Here's what I HAD to change:
Motor mounts
Radiator and mounting brackets cause the inlet and outlets on the 351W are on the other side
Flywheel (my original clutch and pressure plate will work with the change I am told....if it does it'll be the first thing that worked to my favor).
Accesory brackets
New water pump and mechanical fuel pump (the others may have been ok but I wasn't willing to take the chance).
Distributor in the old 351W needed changing so I put in a new MSD billet distributor hooked to a MSD 6A ignition system.

I'm also replacing the entire exhaust beginning with Heddman elite shorty headers connected to true duals through two high flo cats and two flowmasters.
Intake on the 351W was a 2 barrel....since I had to buy a carb for the 351W anyway, I put on a Holley street avenger 670cfm mounted to an Edelbrock Performer intake.
Lucked into a set of heads from a 66 289 that had been ported and revalved with 1.94/1.50 valves with hardened seats. (Anybody need a set of D90E heads?)
Total cost so far........$4,800.00.
When I went into it I wanted as much as I could wring out of this without going overboard. I could have went with TFS twisted wedge heads, but didn't want to put a grand in just the heads.
But don't let this scare you off. There are lots cheaper ways to do this than the route I took. Mine just sorta took on a life of it's own. *evil chuckle*

 

I swapped the EFI 300 6 cyl. in my '87 for an EFI 302, which would be very similar to a 351 swap. The motor mount brackets are different, which is no problem on the 6 cyl. truck because they bolt on. All you need to do is swipe the brackets out of a small block truck - 302 or 351W. Either will work. That's the tricky part. They rivet the V-8 mount brackets to the frame so you'll have to cut a few rivets to get 'em off. After that, they bolt right in to the 6 cyl. truck. The holes are already there. The bellhousing bolt pattern and the clutch assembly is the same, so that's easy, but you WILL need a flywheel for whatever engine you use as the 6 cyl. is balanced different. As for the EFI, that is the easiest part. Get the computer and entire engine harness out of whatever truck you swiped the EFI manifolds from. It will all plug right in to your truck. Obviously, you'll also need different radiator, exhaust and accessory brackets, too. I thought it was easy, but I bought a wrecked truck for the parts, too.