i am about to swap the blown up 400 in my 73 long bed for an I6 and ive done alot of searching on here and came up with nothing so i was wondering when it comes to the motor mounts and towers am i gonna have change anything or can i use the towers in it
__________________
Yshua
never been towed but have towed plenty of chevys
The towers are not the same as the 300 I6, and the trans will need to be swapped if it's an auto and the bell housing will need to be changed if it's a std. trans. You may also run into driveshaft length problems. Good luck with the swap.
__________________
If it's a FORD, it's therapy. For anything else , it's called WORK.
76 F100 300 6
79 F150 302
79 F150 351M to a 429 (best sleeper ever)
79 F150 460 -current toy
well when i got the truck some one had put a 400 in it from a 77 i drove it a while till it gave up the ghost and then i bought a short bed with a 360 which is my daily driver but now i need somthing better on fule so im going with a I6 with a 4 speed
__________________
Yshua
never been towed but have towed plenty of chevys
I dont know why people like to bash the 300, sure its not the most powerful engine in stock form. But wow, a few mods and you have yourself a nice powerhouse with wicked low end and decent mileage. Motor mounts, bellhousing pattern, rad hoses (i recommend universals), ignition. I think thats all you really need to worry about to swap it in.
Just think it would be a downgrade going from the 400...
when you're worrying about mileage I'd rather have 15-18 than 8-10.
__________________
Kevin
1979 F100 4x2,
300 Inline 6,
3 speed manual,
9 inch rearend,
10 series Flowmaster,
Grant steering wheel,
JVC stereo in the glove box-the previous owner did that,
and some other stuff
"You got to drive that Ford like it's a stallion."-Jack Ingram & the Beat Up Ford Band
Don't know if your truck is 2wd or 4wd. But to do the swap you'll have to change out the motor mount frame bracket/towers. You'll need ones from a 65-79 truck with either a 240/300 inline 6 or a 360/390 FE big block. They use the same brackets. If your truck is a 2wd you'll need the towers from a 2wd truck. If it's 4wd you'll need ones from a 4wd. And then just use the motor mounts for your age truck with a 300.
And like it was already mentioned you'll also need the correct bellhousing/transmission.
Has anyone done a swap of a 4.6L or the triton 5.4L into a 70 something F series? I had a 99 f250 with the 5.4L triton, and it had great power and I was getting close to 17mpg in town when I took it easy....???
The 300s really arent that great on fuel, especially in stock form. I had a 73 1/2 ton with a 300, and a 84 chevy 1 ton with a 454, and they both got about the same mpg.
No one bashed it. Its a GREAT engine. Just think it would be a downgrade going from the 400...
Sorry.. I didnt mean to say that you bashed it, im just saying that it is an engine that doesnt get the respect it deserves. For the purpose of the swap it is a perfect choice.
Don't know if your truck is 2wd or 4wd. But to do the swap you'll have to change out the motor mount frame bracket/towers. You'll need ones from a 65-79 truck with either a 240/300 inline 6 or a 360/390 FE big block. They use the same brackets. If your truck is a 2wd you'll need the towers from a 2wd truck. If it's 4wd you'll need ones from a 4wd. And then just use the motor mounts for your age truck with a 300.
And like it was already mentioned you'll also need the correct bellhousing/transmission.
The 300 is a great engine.
alright man thanks for the info thats what i was really looking for but yeah 300 for gas milage my dad has the same setup that im putting in and he gets about 15 city and 20 highway and i really cant afford to drive the shortbed with 360 anymore it gets about 5 mpg
__________________
Yshua
never been towed but have towed plenty of chevys
I put a 300 6 into my 79 Bronco that had a 400. My mileage went from 10 to 15. Power wise, not much difference, though I only use it for snowplowing. You'll want 300 frame perches (or FE perches into the other holes) and a small bellhousing. Throttle cable for a 300, and the radiator can remain (400). here's a pic how I used the 300 rad. hose, and the 400 rad. hose and joined the two together using a "step-down" rad. heater. Also a flex hose on top.
__________________
"We are holding our own."--Ernest McSorley
The Good1948 F1: Flattie on the stand
The Bad1987 TC: Test fitting drivetrain
And the Ugly1962 Fairlane: Out in the cold
