1963-1973 Mercruiser all Engines and Drives Service Manual Books 1 and 2, Page 893Get this manual
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V-8 TORQUE SPECIFICATIONS MerCru ise 270 TorqFtLbs 20 60 45 65 20 20 60 20 30 30 75 3 8-24 7 16 14 40 65 MerCru iser 31 TorqFt Lb s18 MerCrui er 325 Torq Ft Lb 20 20 85 MerCrui ser 390 TorqFtLb 20 20