2.9 Liter HP. I installed a '87 TB, which is larger (58mm), in my '88 Bronco II. What a difference! I could sure feel it in the seat of my pants. On this web page it only states one HP rating for 2.9L engines, @ 140HP. However, with a larger TB that would add more HP, my question is, did the '86-'87 have more HP than the '88-'90?
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