300/351 swap
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New User
Joined: Feb 2002
Posts: 4
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From: St. Charles US of A
300/351 swap
I have a '79 F-250 4x4 with the original 300 I6, NP435, and NP205. I want to drop in a fuel injected 351 out of a 2wd '90 F-250. I've heard or read that the motor should bolt up to the tranny but I'm not sure. If not or if it's cheaper I might use the C6 out of the '90 and get a different tailshaft for the t-case. I should also be able to use the wiring from the '90 F-250. I'm not sure about the motor mounts either. Any info submitted would be greatly appreciated as i have no idea where to start with this conversion. So far all major companies I've talked to don't handle this kind of swap. Thanks
Fleet Owner
Joined: Jun 1999
Posts: 24,552
Likes: 74
From: Creedmoor, North Carolina
300/351 swap
Jeff, Companies don't take on that task only FTEs. You can cross lines with emissions standards and they don't want the liability.
Yes the 351W will bolt to the existing bell, but not the engine perches. 302/351W perches are easy to come by though, so finding a pair should be easy.
If you get an EFI, you need to get the wiring and computer that goes with it. Will it be cheaper to operate, no but it will have more power.
Happy swapping.
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John
jowilker email me
[link:www.ford-trucks.com/users/jowilker|My Club FTE Page] Member since 01 01
[link:www.ford-trucks.net/users/jowilker/NCFTE.html|NCFTO] North Carolina Ford Truck Owners Group
In the cool still quiet of night, you can hear chevies rusting away.
Yes the 351W will bolt to the existing bell, but not the engine perches. 302/351W perches are easy to come by though, so finding a pair should be easy.
If you get an EFI, you need to get the wiring and computer that goes with it. Will it be cheaper to operate, no but it will have more power.
Happy swapping.
http://www.clubfte.com/users/jowilker/USFlag.gif
John
jowilker email me
[link:www.ford-trucks.com/users/jowilker|My Club FTE Page] Member since 01 01
[link:www.ford-trucks.net/users/jowilker/NCFTE.html|NCFTO] North Carolina Ford Truck Owners Group
In the cool still quiet of night, you can hear chevies rusting away.
Senior User
Joined: Feb 2002
Posts: 499
Likes: 0
From: Michigan
300/351 swap
Go for it man. Don"t let anybody tell you no. I plan on changeing my truck over to a Power Stroke one day. I am still kicking my self for not buying a wrecked 1996 F250 Power Stroke 4X4 2 years ago, it had everything I needed and still run and it only had 40,000 miles on it.
1979 F350,4x4,NP435,5:13 gears,Detroit locker in rear with hardened shafts,ABR in the front,360 with 428 crank & rods,390 HP heads,Centerforce Dual Friction Clutch,MSD Ignition,39.5x18 Boggers,bucket seats out of a Lightning,& a Southern Body that is perfect.
1979 F350,4x4,NP435,5:13 gears,Detroit locker in rear with hardened shafts,ABR in the front,360 with 428 crank & rods,390 HP heads,Centerforce Dual Friction Clutch,MSD Ignition,39.5x18 Boggers,bucket seats out of a Lightning,& a Southern Body that is perfect.
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