I'm wondering if anyone has put a carbed 300 in a fuel injected truck? can if be done semi easily? What all needs to be done in order to do it? Can i run the 5 speed behind it with the hydraulic clutch? Is it plug and play with wiring? Just doing some research for a possible project this summer. Any info would be great. Thanks ya'll

 

Guess it kind of depends if you want to run it carbed or EFI. Carbed it could be done with just a DSII swap, if EFI then you will need to swap the intake/exhaust. I think I would swap in the EFI head while I was at it as they were designed for use with it. You'll also need a block off plate for the mechanical fuel pump if your doing EFI. But other than that it should be plug and play, including the trans. Might have to swap flywheels depending on what it has and what your hooking to it.

 

I'm talking as in like taking the complete efi engine out and putting a whole carbed engine in the truck as far as wiring how hard is it to keep everything running right.

 

Don't understand whether you want to convert your truck to carb or use a carb block/head with EFI.

First one is easy. No wires to worry about.

Second one is a little harder. You have to move all the sensors over, block off the air injection holes, and ultimately either reduce the compression or find a way to let the computer make peace with the higher CR.

 

Just dropping the carb'd motor into a truck that originally had an EFI motor is a really simple swap. Just drop it in and hook it up.

The first of two issues I can think of would be the fuel. You'd either need to get a block off plate for the motor (where the mechanical fuel pump bolts to) and then get a fuel pressure regulator and use the stock EFI electric fuel pump. Or, remove the stock EFI pump and install the original mechanical pump.

The other may be stuff that is controlled by the computer, such as the speedometer, or the automatic transmission. That'd be determined by your setup and year of truck though.

 

What about the ignitions module and the ditributor power what do you tap into or what do you do? As far as the truck i'm looking to maybe put it in is a 90-94 f150 with the 5speed. Is the harness plug and play for anything?

 

I forgot about the wiring harness. I don't know on that part. I imagine you'd have to go with the Duraspark II ignition/module/coil, etc. but I don't know if it'll plug directly into the truck or not. I imagine not.

Someone who knows that side of the wiring may have more specifics.