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10-01-2015, 08:50 AM | #1 |
Junior Member
Join Date: Apr 2014
Posts: 40
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Gm performance 305 block
Does anyone know why the GM performance 305 block (10243878) has 10mm bell housing and motor mount threads instead of the standard 3/8 16? Is there anything else dimensionally odd about the block? With priority main oiling and .260" thick cylinder walls, it sure seems like an improvement over your "fathers 305" block... Thanks, Patrick.
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