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Hi Assuming it's the original engine, write down the Vehicle Identification Number or VIN (it is usually on your title certificate or etched into the windshield, or on some kind of sticker behind your windshield, and email Chevrolet with your make and model and the VIN number. They will probably reply. Phil

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Q: How can you tell if your Chevy V6 4.3 engine is TBI or MPI?
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