My dad bought a 1984 ford f150 xl manual transmission. It came with a different engine that my dad says Is a straight six that Is fuel InJected, a few thing were changed In the truck to make this work. But how do I know what spark plugs to get, how do I know what oil this engine needs, what If something needs to get replaced etc. I dont think simply walking Into a auto parts store and saying I want spark plugs for a straight six engine would work because there Is probably different makes, models, engines etc. The guy gave us a case of 10w 30 oil that has probably sat a few years and might of even been for the old motor that was In the vehicle so Idk If It Is used for this motor. Idk what to say etc to the shop when I want spark plugs etc how do I know what gap or If I want a part Just saying straight six engine probably wont narrow the results. How would I figure out how many liters and hp this vehicle also has. Any way to find this out or know what engine.

 

This is the V6 forum for 97+ - I'll ask a moderator to move this to the pre-97 forum.

 

well strait 6 is a 4.9 liter. they all take 10w-30. i believe in 86 they had fuel injected. and 90% of the parts in the 4.9 are interchangeable but all ur matinance stuff should be the same. hp is roughly 120 and torque is roughly 260

 

Read these:

. . . . . .

The engine oil is for the local temperature - not the particular engine. Read this:



But varying one or 2 grades won't hurt the engine; if you suspect the engine is worn, you should go a grade higher anyway to help fill in all the worn places inside.

All 300ci/4.9L use the same spark plug with the same gap, but when you find out what year your engine is, try to find a VECI label for it in the junkyard.

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It doesn't matter what the original hp rating was - it won't make that much now, and it's not a hi-hp engine anyway. Don't try to make it one, or you'll be replacing it again. Mine is 100% stock (for what it is), and it'll push my 3-ton Bronco over 110mph for as long as I let it. It takes a few minutes to get up that fast, but it will get there. And it doesn't hurt it. Messing around with it to try to get more hp WILL hurt it.

I think losthillbilly's numbers are EXTREMELY ambitious - I think they were closer to 85hp & 100 lb-ft.

 

I think the truck easily has more than eighty five horse power and how do I find out what motor this even Is I dont know If Its a 4.9, this Isnt the stock motor this was a different motor put In the vehicle.

 

ford only had 4.9s in the truck they never had any other fuel injected strait 6

steve the hp and torque is from factory spec

 

Could It possibly not be a ford motor or something. I could post pictures. Of the truck.

 

What makes you think it's not a 4.9 liter Ford I-6? That engine was used in Ford trucks from 1965 to 1996. 1987 was the first year of the fuel injected version. It was also called the 300, because that's how many cubic inches it has.

 

if it has a bog aluminum plentum that start on the passenger side and goes over the valve cover its ford plus the valve cover and plentum should be stamped ford

 

Heres pictures of the engine.















Those are the pictures.

 

ford 4.9 but that looks like a carborated modle not fuel injected

 

Did they ever offer a 4.9 with TBI? That's certainly not port injection. Take the top off the air cleaner and see what's under there - a carb or a TBI. Smog pump isn't hooked up either.

I'm guessing that's the original stock engine or a direct replacement.

 

i dont ever recall a tbi on a 4.9 but i could be wrong

 

Any guesses on what engine this Is are ya sure Its a 4.9 and as far as the fuel Injection thats what we were told when we bought the vehicle and they said they changed a few things to make It work.

 

yea im sure its a 4.9 and i can tell the diconected the a.i.r. system the check valvs sittin open.