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Reply to "oil capacity"

LPB,

4 qts in the pan & 1 qt in the filter, 5 qt total, is normal for a Cleveland with the oem oil pan.

You can run 1 extra qt in the pan, 6 qt total, without causing any problems. I recommend doing this. The Boss 351C installed in the 1971 Boss Mustang had a dipstick calibrated for 6 qts, using the same oil pan as the standard Cleveland engine.

Add the amount you wish to run, 5 or 6 qts, run the engine for 30 seconds, long enough to make sure the filter is full of oil, turn the engine off & let the car sit for 15 minutes to give the oil in the heads a chance to drain back into the oil pan. Take a reading with the dip stick. If there is no line where the oil level is, make your own using a triangular file, or lay the flat tip of the dipstick on a solid flat surface and make a line with a careful tap of a chisel (don't hit it too hard & knock the tip off the dip stick).

your fiend on the PIBB, George
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