i was reading up on my fiero's 4 cyl engine called the iron duke and i came across this on wikipedia

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Racing versions

Though not a production engine, the Super Duty 4 racing engine was notable and widely publicized at the time. It was the basis for NASCAR's Touring Car series. The Super Duty 4 (usually called the "SD4") is still in use today for ARCA Racing.
A 2.7L 232 hp (173 kW) SD4 engine powered the 1984 Fiero Indy Pace Car to over 138 mph during the race. The SD4 was never available in production vehicles, however Pontiac's Performance Parts counter had all the SD4 parts available and one could garner a 2.7L 272 hp (203 kW) version and a 3.2L 330 hp (250 kW) version. All 2000 Indy Fiero replicas came with the 2.5L 92 hp (69 kW) Iron Duke engine.
The SD4 was the last in a line of high performance Pontiac "Super Duty" engines. Kansas Racing Products still makes the engines after buying the rights to make them from GM.
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Is it still possible to buy the parts for my engine to make it of the same horses?

Last I heard of you could.

Start saving http://www.kansasracingprod...roducts/Welcome.html

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quote Originally posted by insaneturtle: Is it still possible to buy the parts for my engine to make it of the same horses?

For your engine? No. The SD4 was not the same block as the Iron Duke. I know some have put the SD4 valve cover on there Duke, not sure about the SD4 head though. Even so, if you could put the SD4 head on your Duke you still wouldn't have a SD4 block and internals.

There are a few members on here with the SD4 in there cars. Maybe they will chime in as to what can be used with the Duke block.

[This message has been edited by Khw (edited 07-30-2010).]