06 heads on an 05 engine????

[hawk270]

I bought a motor from an 06 F250.. I have an 05 F250 and my heads are shot. Will these heads work on my engine. I know they changed the bolt size around that time. I would like to send these out to get redone for my engine if they will work. Any input will be greatly appreciated.

Thanks,
Keith

[rdunagan]

as long as the bolt size matches up then yes you can. i think they might even have a dowel that works incase they dont but dont hold me to that. but as far as the head working they will.

[Fred@PMM]

Bolt size is the same the dowels are what is different, from January 06 and up the dowel is a 20mm. To use these heads all you need is a stepped dowel to fit your block which should be the old style 18mm dowels.

[Arctic Fox]

If someone was going to put the newer 20mm dowel heads on an 18mm block using the special stepped 18/20 dowels... which gaskets are you supposed to use... the 20mm gasket?

[rdunagan]

depends on what block it is but if the block is 18 then yes 18 if its 20 then put the 20's

[hawk270]

OK.. thank you guys.. I still dont quite under stand that if i use the 18/20 stepped dowels, that I have to use the 18mm head gaskets.. just my thinking, but wouldn't it have to be the 20mm ones instead?? I am not a mechanic now so don't hate on me. LOL. But that's just me thinking aloud.

Thanks again,

Keith

[rdunagan]

its been awhile since ive looked at a block but i think you are correct. thats my bad! good call

[Fred@PMM]

Use the gasket size of whatever the head is, the stepped dowel will pinch the gasket.

[hawk270]

Thanks a lot guys. I found a set of stepped dowels on ebay and got everything ordered.

Thanks again,
Keith