Baylinerchuck
Commander
- Joined
- Jul 29, 2016
- Messages
- 2,739
Is there a definitive list of changes over the years for the ole Iron Duke? Something that lists this head has these port sizes will only work with this manifold, etc. I think for the most part the 3.0 blocks are interchangeable with exception of the ring gear being different pre 90 vs post. It would be interesting to see the changes over the years and what works with what.
The reason for my curiosity:
Buddy of mine bought a 2003 Chap and found out through the S/N on the block that it’s from the late 80’s. Head is gray like it’s OMC, manifold appears to be 80’s as it has the bolted on endcaps with water jacket in one endcap. I think it’s going to be difficult to change over to a 2000 long block. Probably better to find a donor boat at this point. Who knows what was changed to put this late 80’s motor in.
The reason for my curiosity:
Buddy of mine bought a 2003 Chap and found out through the S/N on the block that it’s from the late 80’s. Head is gray like it’s OMC, manifold appears to be 80’s as it has the bolted on endcaps with water jacket in one endcap. I think it’s going to be difficult to change over to a 2000 long block. Probably better to find a donor boat at this point. Who knows what was changed to put this late 80’s motor in.
