Iron Duke Cylinder Head 1987-1988 Buick Skylark Somerset 10038808 & Valve Cover | eBay
Worst Engines of All Time: GM's 2.5L Iron Duke 4-Cylinder - YouTube
2.5L Iron Duke crate engine for sale - at Hershey til Thursday - Automobiles and Parts - Buy/Sell - Antique Automobile Club of America - Discussion Forums
The Pontiac 2.5L
Riding with the Iron Duke - Engine Builder Magazine
Jeep Engine: GM 151
iron duke a good motor or stay away?? | S-10 Forum
f-head out iron duke in | ECJ5
GWR Iron Duke class - Wikipedia
For the last time, the Iron Duke was not the same engine as the Chevy II four-cylinder | Hemmings
2.5 Iron Duke Is it The Same?? - Chevrolet Forum - Chevy Enthusiasts Forums
What Was The Iron Duke? | The Daily Drive | Consumer Guide®
Hot Rods - Iron Duke owners, will it work. | The H.A.M.B.