HOW TO GRIND V-8 OHV ENGINE CYLINDER HEADS WHERE INTAKE MANIFOLD SERVES AS LIFTER VALLEY COVER
When resurfacing modern OHV cylinder heads it is necessary to remove material at "A" and "B", using the formula for the correct angles. (See How to Grind V-8 OHV Engine Heads)

After these type cylinder heads are ground it will be found that the center section of the intake manifold strikes the top of the block "C" before it contacts surface "B" of the cylinder head. To correct this condition material must be ground off the cylinder block at "C".

 The amount to be removed is determined in the following manner. Let us assume .015 was removed from surface "A". We multiply the amount by 1.71 to determine the amount to be removed at "C".

Example:   .015
        X 1.710 (Multiplier for Top
            015  Manifold Surface "C")
           105
          015 
         .02565 Amount to be removed "C"

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