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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

300 straight 6, head question

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Old Aug 5, 2010 | 06:25 PM
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300 straight 6, head question

i bought a carburated, 300 from a guy and he said that he just put a new head on it. i installed it, and it ran like crap, after putting new everything on the motor, it still ran bad. my question is how can i find out if it is a head from a fuel injected motor it has 0f28 on it. the head is clean, and looks real good. but i have never found out why it ran so bad. when i put the motor in it ran bad, but did not smoke, but when i pulled it it ran bad, smoked, and had blow by. sorry so long, oh the motor is a 84. thanks for any onfo
 
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Old Aug 5, 2010 | 06:30 PM
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Can't tell you 100%, cause I just don't know (yet), but there 'should' be some numbers stamped into that head someplace. I'm not familiar enough to know the difference although I bought a head off of a fuel injected truck for $25 a couple of weeks ago (for my 84...kind of bizarre). If noone can answer it, I will take a closer look at it tomorrow at work, and compare it to mine....Post the numbers up, if you can find them or googling it might work too...

Frank
 
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Old Aug 5, 2010 | 06:36 PM
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You need the casting number off the head. This will tell you which version it is, although not necessarily what year. It will start with a D or an E.
 
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Old Aug 5, 2010 | 08:34 PM
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An efi head will have a few extra manifold bolt holes in it, but, it will run just fine on a carbed engine, all the industrial version 300's after 87 were set up that way.
 
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Old Aug 5, 2010 | 09:28 PM
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thanks for the info 82f100swb, i will put that head on a good block tomorrow. thanks again everyone.
 
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Old Aug 5, 2010 | 09:33 PM
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i have another question, should i keep the push rods, and lifters with the head im going to use. or just use the push rods? sorry about all the questions, but i want to get it right
 
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Old Aug 5, 2010 | 10:21 PM
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Always keep the lifters with the cam on the same lobes ...

-Enjoy
fh : )_~
 
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