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I'm deleting the oil cooler/heater from a 96 LT1. I have part GMPP 3952301 that the filter will screw on to. Question: does orientation front to back matter when bolting on the mentioned part? I see there is a hole machined into the block on one side and I don't know if that matters in terms of the direction the part is facing.

Also, the machined area on the block is 4" at the widest, while the filter gaskets I've checked are only 3.66" in diameter. The machined area on the block is wide enough to accommodate the smaller diameter filter gasket. I suspect this is not an issue, but would like confirmation from someone more knowledgable that me.

Thanks for the help.
 

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You remove the oil cooler adapter, the oil filter adapter is bolted into the block’s machined cavity it is retained by 2 bolts with no gasket. The filter adapter‘s outer opening should sit over the supply hole of the block cavity. Output is with the center filter attachment screw. The adapter will be a little inset with the machined cavity, the filter will seal on the machined pad of the cavity. It really doesn’t matter what direction it’s installed but the mechanic community prefers having the bypass valve inboard toward the oil pan.

Bogie
 
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