383/388 Chevy stroker
(Created page with 'All small block Chevy blocks are the same measurement from the centerline of the main bearing journals to the deck where the heads bolt on, ~9.025". When we mix and match compone…') |
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It is commonplace for us hot rodders to cut the block decks to zero piston deck height and use a head gasket that compresses to around 0.040". This allows a squish of 0.040". Squish is the high speed jetting of fuel air mixture from the dead zone opposite the combustion chamber. When the piston approaches top dead center, the clearance between the crown of the piston and the underside of the cylinder head diminishes to just short of a collision. This squeezes or "squishes" the mixture that is there, across the cylinder toward the spark plug. This high-speed jetting of the mixture not only eliminates any dead spots in the chamber, but also creates turbulence to accomplish complete mixing of the fuel/air mixture so that there are no lean or rich areas in the chamber. Having the tight squish (0.035" to 0.045") will allow you to build a high performance street/strip motor that will run on pump gas without detonation. | It is commonplace for us hot rodders to cut the block decks to zero piston deck height and use a head gasket that compresses to around 0.040". This allows a squish of 0.040". Squish is the high speed jetting of fuel air mixture from the dead zone opposite the combustion chamber. When the piston approaches top dead center, the clearance between the crown of the piston and the underside of the cylinder head diminishes to just short of a collision. This squeezes or "squishes" the mixture that is there, across the cylinder toward the spark plug. This high-speed jetting of the mixture not only eliminates any dead spots in the chamber, but also creates turbulence to accomplish complete mixing of the fuel/air mixture so that there are no lean or rich areas in the chamber. Having the tight squish (0.035" to 0.045") will allow you to build a high performance street/strip motor that will run on pump gas without detonation. | ||
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