Thread: ford fe 360 to 390 conversion

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Originally Posted by slugoz

I have a 1969 f-250 with a 360. I am looking to convert to a 390 crank, use original rods and punch it out a little. I have a set of pistons that have the valve indentations in it. Is is doable with 360 rods?
Thank you in advance.

Post the part number of the pistons and also the casting number of the heads (just above the exhaust ports, about halfway back from the front of the motor). I'm planning to figure your static compression ratio. With iron heads, it may be too high to support use on pump gas without detonation.
My batting average for having an ongoing conversation with a one-time poster isn't real good, so if I never hear from you again, good luck with the poke and stroke.