What year is my motor
I have a new question, based on looking under my hood with the Haynes manual in hand. In chapter 2 C-6, picture 7.8, in a sidebar to the picture it says earlier models have twelve bolts for the upper intake manifold, newer models only have six. My car only has six bolts for the upper intake manifold, so uhhh, what year did GM make this switch? Also, my motor has 3400 SFI stamped on the upper intake manifold. Any ideas to pinpoint what year this motor is?
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