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I got a B20 for my 122s Coupe swap/upgrade, but which B20 did I get? 120-130

I've worked on many '71 and '72 140's with carbs. They were still available--at least here in the northeast. 1973 marked the first year that the injected motors were standard across the board. I know there are folks on the BB who have production info--maybe posting the numbers from your motor would be of value. Since the carbed motors all came with the same "C" grind cam the only real difference between years is compression ratio--which can be determined by measuring the deck height of the head. From what I've seen as original -- Stromberg CD carbs on '69-70 and SU carbs on '71-72. -- Dave






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