I have a 1983 f250 with the original 300 L6. My buddy has an L6 from a 1997 bronco with 54k original miles for only $850. I don't think I can really pass that up but I was wondering if there would be any issues I could encounter because of the age difference or anything that wouldn't make it plug and play with the wiring harness and fuel system and stuff like that.

 

The 93 being EFI will not have the hole for the fuel pump so have to go electric pump.
User your intake and exhaust manifolds or your intake amd the EFI exhaust manifolds & Y pipe.
there is other little things needed to run the EFI manifolds but is not hard to do.
Dave ----

 

Ok, I was thinking I would stay carbureted for now until I have some more cash to spend on a holley sniper EFI conversion. But I think $850 is a steal for an engine with only 54k miles

 

IMHO, it's always good to have a core engine in our hobby. The only thing is that the 4.9l in your Bullnose truck is the most indestructible engine ever built. You'll never live long enough to use the core engine unless you hit 100+.

 

you can stay with the carb but because the block is not machined for a fuel pump you have to go electric or machine the block for the pump. Then I don't know if the cam is setup to work the arm on the pump?

When I get on my computer and can type I will post more info.
Dave ----

 

Electric fuel pumps are easy to wire in. Get one like this.

 

Just make sure you wire it for safety. If the motor stops running the pump should stop also.

As I said you can run the EFI exh manifolds and the factory log intake / carb but a few things need to be done so it will run / work right.
1 is the hot air asst. choke. The EFI manifolds dont have a way to hook up the hot air to open the choke.
I took copper tubing and wrapped it around the manifold, do a few more wraps than I did, and hooked it to the carb like the factory did.



Because I did not do enough wraps when it got down into the 20's (F) the choke would not come off fast idle.
I took header wrap and covered the tubing & manifold to keep the heat in and it worked great.

You also need to heat the intake manifold floor or the fule will drop out if the mixture.
I bought a plate that has nipples for hoses and I run heater hose from motor to the intake> to heater core> back to motor.
You can see part of this in the first picture. Others have have made them and some dont run them at all.
So it is up to you what the motor may need.

The EFI manifold they say flow better so it adds a little power.
But you can bolt your manifolds to the EFI head and not have to deal with the choke air or heating the intake floor.
Dave ----

 

Oh if you go with the Holley EFI you will need to run a different intake manifold and you will need to heat it the same way as the factory one.
And you will want to run EFI exh manifold or a header so again need to heat the intake manifold.
Dave ----

 

He can get the sniper 2 barrel kit for the 2150 applications, and then run a 2 barrel to 1 barrel adapter on the original intake manifold.

 

The only way "I" would ever do that is if I had good 2150 carb sitting on a shelf, no intake to fit it and had to get it running.
I just cant see breathing thru a "straw" to help it make more power

I wonder if his carb icing is because of this miss match of carb & intake / adapter?
wrong thread.
There is someone that has a 2150 carb and the adapter to factory intake and it runs poorly when it starts and the carb keeps icing up.
Dave ----

 

Tons of good information in here. I agree with getting ahold of an additional low mileage engine, especially the bulletproof 300 for a great price. I am a huge fan of EFI, so this would be an upgrade (IMHO) and worth the trouble to get it installed. Like it has been said before in this forum, with enough time, money and patience anything can be done.