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it can but you have to put a 4.3 wiring harness in and a 4.3 chip and you may have to get adapters for you transmission

Correct, the 4.3 will not bolt to the 2.8 bellhousing.

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12y ago
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Q: Can a 4.3l engine out of a 1991 Chevy s10 blazer fit into a 1988 Chevy s10 truck that has a 2.8l engine?
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