Question about 1981 Ford F 100

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POSSIBLE TO convert 1973 ford F100 390 to inline 6

My husband bought a 1973 ford f100 4X4. It has a 390 in it. He wants me to find out if you can put an inline 6 in without to much trouble. What exactly has to be changed out if you drop in an inline 6. Is it to difficult?

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No not much trouble. However it depends on what Transmission you are using. If A stick, then you will need to change bell housing and you will need to use flywheel fro either a 302 V-8 or another strait 6. 300 or 240 which ever you are using will also need the hard mounts from another truck. The mounts are diferent from one with a 6 to one with a V8. Also the radiator if I remimber correctly is diferent in the way the hoses hook up. There will be a little more money to do this change. But it is easy once you make the plan and see what needs to be done. I have gone from a 300 6 to a 302 V8 in a 78 F-150. It was quite easy and i did it in a day. Any more questions ask.

Posted on Jul 14, 2008

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