84 motor into 87
Thread Starter
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Tuned
Joined: Aug 2003
Posts: 386
Likes: 28
From: Garnett, KS
84 motor into 87
I posted this in another section with limited feedback, so here it goes.....
I'm putting the 300 out of my (running) '84 F-150 into the chassis of my '87 F-150 that was originally equipped with a 302. The reason for doing this is that the 87 looks like a new truck compared to the 84 and it also is an extended cab truck. The EFI components are gone as far as anything that goes on the motor, and I don't want to go through the hassle and expense of finding replacements for an injection system that is probably inferior to anything available today. That being said, I'm going to rob everything I need off of the 84 and junk the truck. Now, I've spent about 2 hours looking over efi to carb topics on the site and this is what I assume I need to do :
1) Swap out fuel tanks, or take the pump off and be creative,
2) Run my current distr/coil/module and wire it in with the 87 harness -or- buy a stand alone distr/ignition box,
3) Current alternator should work with 87 (?)
4) Nothin with the trans because it will be manual
Is there ANYTHING else you guys can think of, or correct me on??? I appreciate the feedback.....
Frank
I'm putting the 300 out of my (running) '84 F-150 into the chassis of my '87 F-150 that was originally equipped with a 302. The reason for doing this is that the 87 looks like a new truck compared to the 84 and it also is an extended cab truck. The EFI components are gone as far as anything that goes on the motor, and I don't want to go through the hassle and expense of finding replacements for an injection system that is probably inferior to anything available today. That being said, I'm going to rob everything I need off of the 84 and junk the truck. Now, I've spent about 2 hours looking over efi to carb topics on the site and this is what I assume I need to do :
1) Swap out fuel tanks, or take the pump off and be creative,
2) Run my current distr/coil/module and wire it in with the 87 harness -or- buy a stand alone distr/ignition box,
3) Current alternator should work with 87 (?)
4) Nothin with the trans because it will be manual
Is there ANYTHING else you guys can think of, or correct me on??? I appreciate the feedback.....
Frank
Post Fiend
Joined: Oct 2003
Posts: 6,214
Likes: 13
From: New Jersey
You can swap the tanks, the fuel pumps, the wiring and various other things to convert the truck from EFI to carb, however, that's more work than to just get yourself the EFI bits out of the junkyard, slap it on your 300 (including the under-hood wiring harness and the computer), plug it together, and install it.
If you're really set on going carb, by all means, feel free, however I don't see any obvious advantages. Carbs require a choke (manual or electric), don't usually get as good as mileage as EFI systems (generally, there are exceptions), stuff like that.
I personally believe and plug-and-play junkyard harness is less work than dropping two tanks and changing all that stuff around. But that's me.
If you're really set on going carb, by all means, feel free, however I don't see any obvious advantages. Carbs require a choke (manual or electric), don't usually get as good as mileage as EFI systems (generally, there are exceptions), stuff like that.
I personally believe and plug-and-play junkyard harness is less work than dropping two tanks and changing all that stuff around. But that's me.
Posting Guru
Joined: Jun 2004
Posts: 1,781
Likes: 1
From: Central NY
I'm curious...
Why change tanks/pumps rather than install a carb level pressure regulator in place of the high pressure fuel pump the 87 would have?
Why change tanks/pumps rather than install a carb level pressure regulator in place of the high pressure fuel pump the 87 would have?
Last edited by Popa Tim; Feb 20, 2005 at 05:25 PM.
Thread Starter
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Tuned
Joined: Aug 2003
Posts: 386
Likes: 28
From: Garnett, KS
Originally Posted by frederic
You can swap the tanks, the fuel pumps, the wiring and various other things to convert the truck from EFI to carb, however, that's more work than to just get yourself the EFI bits out of the junkyard, slap it on your 300 (including the under-hood wiring harness and the computer), plug it together, and install it.
If you're really set on going carb, by all means, feel free, however I don't see any obvious advantages. Carbs require a choke (manual or electric), don't usually get as good as mileage as EFI systems (generally, there are exceptions), stuff like that.
I personally believe and plug-and-play junkyard harness is less work than dropping two tanks and changing all that stuff around. But that's me.
If you're really set on going carb, by all means, feel free, however I don't see any obvious advantages. Carbs require a choke (manual or electric), don't usually get as good as mileage as EFI systems (generally, there are exceptions), stuff like that.
I personally believe and plug-and-play junkyard harness is less work than dropping two tanks and changing all that stuff around. But that's me.
As far as advantages, I definitely agree. I mess with both systems just about every day, and EFI IS the way to go. I think in the future I might look into doing a stand alone/programmable injection system.
I was also wondering about doing the regulator thing. Is the high pressure pump in the tank and a low pressure on the frame or something?
Frank
Posting Guru
Joined: Jun 2004
Posts: 1,781
Likes: 1
From: Central NY
You got it backwards, low pressures are in the tank and the high is on the frame rail. So I'm thinking you might not need to do any tankwork but I'm not positive and I'm sure there are better experts out there than me.
Sure wishing you an hassle free transplant there!
Popa Tim
Sure wishing you an hassle free transplant there!
Popa Tim
