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I believe you are thinking of the Quad 4 engine. These engines were quite common in the early 90s. They were strong little engines. I believe Oldsmobile set some land speed records with them in the Salt Flats. However, when these engines were used in the Cutlasses they had a tendancy to overheat and blow headgaskets. This would lead to the heads warpping and possible lower end damage. I rebuit the head on one of these Quad 4s for my uncle years ago. It wasn't too bad, I made a few hundred dollars. I also remember my best friend's sister had a Quad 4 that blew a head gasket. I believe she sold the car even though she liked it alot.
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