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Oldsmobile Master
17,989 Answers
- Posted on Jul 21, 2010
Re: I need the firing order for my 1980 cutlass ls...
Fig. 5: 1975 and later;Oldsmobile built engines 260, 307, 403,
455. Firing Order: 1-8-4-3-6-5-7-2. Distributor rotation: Clockwise
Hope helps.
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