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Old 01-06-2011, 08:21 PM
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What is the standard deck clearance on a SBC?

What is the standard deck clearance on a SBC with:
-stock crank (3.48" stroke)
-stock rods (5.7")
-flat top pistons
?
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Old 01-06-2011, 08:38 PM
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stock deck height of a sbc is 9.025, to get total height of your rotating assembly take the crank 3.48 divided by 2 (1.74), add 5.703 for the rod length (7.443), then add the compression distance of your piston to that and that will be your deck clearance
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Old 01-06-2011, 09:08 PM
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Quote:
Originally Posted by Silver Surfer
What is the standard deck clearance on a SBC with:
-stock crank (3.48" stroke)
-stock rods (5.7")
-flat top pistons
?
As mentioned above, the deck spec. is 9.025", but some might be 9.030" or more. Measuring it is the only real way to be sure for your particular block. Also, pistons can vary in compression height. Performance pistons generally have factory spec. compression height, while aftermarket, stock-type replacement pistons are usually decked .020" to compensate for overbore, head and/or deck milling, etc.

tom
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Old 01-07-2011, 05:37 PM
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how would one go about measuring for deck height to check?
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Old 01-08-2011, 05:44 AM
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Quote:
Originally Posted by crussell85
how would one go about measuring for deck height to check?
http://image.chevyhiperformance.com/...mage_large.jpg
http://www.chevyhiperformance.com/te.../photo_08.html

Measure parallel with the Piston Pin so you don't measure any Piston rock.
A Straight Edge and Feeler Gauges or if you want fancy a Piston Stop with a Dial Indicator can be used.
http://www.summitracing.com/parts/SUM-900188/
http://www.summitracing.com/parts/SUM-900060/
There's one in the center of this Pic>> http://image.chevyhiperformance.com/...mage_large.jpg the Dial Caliper is leaning against it.
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