I am thinking about going to the junkyard and finding an efi truck with low miles. pulling it , make sure the bearings and everything are good and putting on a barb intake and 4 barrel carb and doing it that way. The reason for me wanting to do this is I do not have the money for all the machine work and everything. Does anyone see any problems in doing this?

 

other then fuel pump not really. im not sure if the fuel injected ones have a spot for that or not

 

Ahh thank you that was one thing I will have to look into. What about wiring I know it will be different, but is there little enough witing I could just wire it myself because the po really messed up the wiring.

 

Why an EFI motor, just curious?

 

I have never converted a 6 from efi to carb, but I have a v8, and it's not too bad. On a v8 you just change out the timing cover from the old engine to the efi engine along with the fuel pump eccentric on the camshaft gear, and the fuel pump will bolt right on.

I used to pick efi engines because they had the lowest mileage at the time. Now they are getting so old I don't know if there is really any point.

 

on a 300 though its cast into the block.....the timing cover only covers the timing gears.

 

That was the logic I was thinking, but I was also along the same lines in that mileage might not be a concern anymore due to age. I would probably look for a wrecked truck first (probably there because of the wreck, not the engine), where a clean truck might be there because of the engine.

 

Sounds like we need a six cylinder expert. Hopefully they just put a cover on the efi block, and you could take the cover off and install the pushrod(if it has a pushrod?) and the fuel pump from the older engine.

 

If I recall correctly there is not cover. The opening has not been milled out. There is two holes for the bolts but no threads in them. You could make a hole and tap the threads if you wanted to. If you are already going to have the pan off of it.

 

While i understand the desire for low miles, 300-6's are well known to live happily past the 300K mark. with most of these trucks, its impossible to know the actual mileage, especially at a JY since the odometers only read to 5 places. you'll never know if it has 65K, 165K, or 465K miles. plus by staying with a carbed engine to start with, you're not immediately trying to go into swapping parts and getting things to match up. IIRC the intake and exhaust gaskets were not the same, i think the carbed had an extra hole. just my .02.

 

Yeah the reason I'm wanting to go with an efi motor is its newer and hopefully in better condition. I plan on dropping the pan and pulling the valve cover and head to make sure everything is in good working order. If I find a carbed motor that is in good working order I will use it but I was just wondering worst case senario.

 

If you get an efi eng and it isnt set up for a fuel pump you can always use an electric in-line pump.