Re: Iron Dukes??
I am no expert (far from it!) but, I think that was the 4-cylinder engine that G.M. used for the first FWD X-cars, (Nova/Omaga/Ventura/Apollo) that were introduced in the early '80s.
It had the same bore-center spacing (4.4-inches) that the chevy small block (and, 4-and-6-cylinder Chevy II) engines had, so they probably used some of the same tooling to build it.
The upside was that Chevy V8 heads used the same bore-center spacing and I'd imagine, could be adapted, by moving the head bolts around...
But, Pontiac (remember THEM?) had a hi-po program for this little engine, and came up with a head that bolted on (aluminum) that was claimed to flow better than the Chevy stuff at the time.
For a pushrod 4-cylinder, this thing was about as good as it gets, IMHO...
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Bill
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