Block deck height
(Created page with "First, know that there are two deck heights on a motor. Block deck height is the measurement from the centerline of the main bearing bore to the flat part of the block deck wh...") |
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The main bearing bore (less bearings, but with caps snugged down) on a small block Chevy is 2.641". If we divide that by 2, we find that the radius of the main bearing bore is 1.3205". There is room to slide a 12" dial caliper down into the bore of #1, #7, #2 and #8 and snag one end of the caliper jaw on the edge of the main saddle, with the other jaw on the block deck at the edge of the cylinder. Measuring a stock block in this manner might give you a reading of 7.7045". Adding the main bearing bore radius to that figure results in a stock 9.025" block deck height. (7.7045" plus 1.3205" equals 9.025") | The main bearing bore (less bearings, but with caps snugged down) on a small block Chevy is 2.641". If we divide that by 2, we find that the radius of the main bearing bore is 1.3205". There is room to slide a 12" dial caliper down into the bore of #1, #7, #2 and #8 and snag one end of the caliper jaw on the edge of the main saddle, with the other jaw on the block deck at the edge of the cylinder. Measuring a stock block in this manner might give you a reading of 7.7045". Adding the main bearing bore radius to that figure results in a stock 9.025" block deck height. (7.7045" plus 1.3205" equals 9.025") | ||
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