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04' Head Replacement

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Are the 04 Heads interchangeable with any other year 450 head? I looks like they are interchangeable from 02-06.

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07-08 went to smaller exhaust valves improving low-end torque.

'06+ Heads went to better valve seat material.

02-06 Cam towers can use the same cams, 07 and 08 each have their own specific cams.

You can exchange the whole cam tower any year to another year without issue.

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07-08 went to smaller exhaust valves improving low-end torque.

'06+ Heads went to better valve seat material.

02-06 Cam towers can use the same cams, 07 and 08 each have their own specific cams.

You can exchange the whole cam tower any year to another year without issue.

nailed it. :lol:

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