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Discussion Starter #1
I just bought a 96 GMC Sonoma. It`s the 4.3L with the "w" in the vin. Vortec SFI. SLS, zq8 package, Power everything, 3.08 rear axle ratio, locking rear differntial, baicaly all options. I originally thought it was CPI, but on the window sticker it said VORTEC 4300 V6 SFI. Whats a SFI? Whats the difference between the CPI?
 

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GM changed the injection setup in '96 similar to the previous CPI but you can find the differences on here.Sounds like youv'e bought a nice truck.
 

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Discussion Starter #4
I thought all 96+ were CPI, but i guess its SFI. Yea the truck is really so nice. The previous owner babied it. Bought it for 5gs even, with 57,000 miles.
 
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