If you have a sail boat and you want it to stay in one place just hook a chain to one of these bad boy and thow it over the side and your good to go. Try that with a SBC. They are just too hvy!

 

lol Gorn, you just had to say that didn't you.


really, the Iron Duke is a good engine for getting gas mileage and nothing else.

 

No it's not. :/ A friend of mine drives a Grand Am with one of those, and he does brag about his 27 mpg, at least until I remind him that my Camaro, which has twice as much engine, gets just 3 mpg less, and my Cobalt gets 10 mpg more, and has 45 more horsepower.

 

The Iron Duke made for a pretty good boat engine. We used to have a 23' deck boat and could pull 2 adult skiers. But our next one was a 19' with a Ford 302. It went a tad bit better!

 

Iron Duke was a 4 cyclinder designed in the early 70's. GM was still putting it in cars in 1990. The motor has its place but should have never been in a Camaro.

 

are you sure it's the Duke???

 

Yep. It's a 1990 Pontiac Grand Am LE coupe. 2.5L Tech IV, 110 hp, 125 torque. 3-speed automatic, and ~270,000 miles on the car.

This's it~
http://img.photobucket.com/albums/v6...bony/002-1.jpg

 

It was around 89 they added a rev spinning counter weight to reduce vibration that made the motor a little smother, they also put the oil filter in the oil pan to help with dry starting. With the exception of the bad years ,84-86 cracking blocks, the 2.5 was a work horse. In a world where a 2.8 V6 was 130 HP the 95 HP the 2.5 output was not that bad. It did a ok job in S10's when backed with a manual trans. It was a good engine back in the 70's. I had a friend who had on in a 76 Monza I think and it took a beating.
Pontiac really got the shaft with this one. They decided on the 2.5 for their Feiro cause of it torque and reliablity. At the chevy dealership was started seeing cracked blocks in S10 and FWD cars at a rate of maybe 1 in 20. The less then perfect cooling system in the Feiro pushed their engine failure rate to about 1 in 3. Some unlucky owners where on their 3rd motor before they left warranty. Its my opinion that this bad timing that killed the Feiro and made it one of GMs great money losing cars todate.

 

The factory picked up and used the name "Iron Duke" for the Pontiac engine (although it was really a Chevy based engine) but the name had been used years earlier by hot rodders referring to the iron four that came out in the 1962 Chevy II (shoebox Nova).
The 153cid four was basically just a 230 six with 2 cylinders chopped off.

 

i wonder how well it would take to boost???