EFI to CARB
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Freshman User
Joined: Sep 2006
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EFI to CARB
I have a 1990 f-150, and i was going to swap out the 5.0 with another 5.0, but the other one has a carb, what would I have to do to change to a carb motor instead of the original efi.
Junior User
Joined: Sep 2006
Posts: 53
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From: South Carolina
All you got to do is run a electric fuel pump for a carb. EFI pumps run at a higher pressure. Carb only needs about 5 to 7lbs.
Then you can trash all the computerized garbage.
I swapped out a 3.8 for an old school 302 in my '93 T-Bird but I had to cut a hole in the hood so that carb could get some fresh air. LoL
Then you can trash all the computerized garbage.
I swapped out a 3.8 for an old school 302 in my '93 T-Bird but I had to cut a hole in the hood so that carb could get some fresh air. LoL
Junior User
Joined: Sep 2006
Posts: 53
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From: South Carolina
Your going to need a shorter throttle and kick down cable and you may have to run a toggle switch for your coil.
I tried powering coil off some stock wiring and relay would trip out. Toggle solved that issue.
I tried powering coil off some stock wiring and relay would trip out. Toggle solved that issue.
Junior User
Joined: Sep 2006
Posts: 53
Likes: 0
From: South Carolina
Kick down cable on older vehicles is what make transmission go into passing gear.
On newer vehicles with AOD trans it controls the transmission's pump pressure so that it shifts right.
Do you have and AOD trans?
You may or may not get by cutting the throttle cable, depends on the linkage. I'm not familar with your trucks settup. I'm just going by what I had to do to my T-Bird.
On newer vehicles with AOD trans it controls the transmission's pump pressure so that it shifts right.
Do you have and AOD trans?
You may or may not get by cutting the throttle cable, depends on the linkage. I'm not familar with your trucks settup. I'm just going by what I had to do to my T-Bird.
Hotshot
Joined: May 2003
Posts: 11,141
Likes: 25
From: south louisiana
Originally Posted by ABA
Your going to need a shorter throttle and kick down cable and you may have to run a toggle switch for your coil.
I tried powering coil off some stock wiring and relay would trip out. Toggle solved that issue.
I tried powering coil off some stock wiring and relay would trip out. Toggle solved that issue.
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Senior User
Joined: Apr 2003
Posts: 148
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From: onatrio, canada
im in teh process of swaping a efi staight six for a carbed 302 i think i am just going to paower the coil form teh starter solinoid and run a inline fuse. i dont know if i iwll drop teh tanks and remove the intake pumps or what yet anyone have any suggestions.
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