hunt3rm008 Posted December 3, 2012 Report Share Posted December 3, 2012 What does going to a 4mill or 10 mill actually do? I know it's a different crank but what specifically changes? Do you have to change the cylinders or pistons? Can you run a 4mill on a stock top end? What are the performance advantages when going 4mill or higher Quote Link to comment Share on other sites More sharing options...
Wildcardracing Posted December 3, 2012 Report Share Posted December 3, 2012 Increased crank stroke gives you a displacement and leverage advantage. Stroker motors if properly setup will have more hp and torque than the same build in a shorter stroke. 4mil cranks "can" be run without modification to the cylinders with the use of a spacer plate. However, the preffered method is to have the cylinders ported for the new stroke and use custom cut domes. Using a 10 mil crank would require extensive modification to stock cylinders if you can find a willing builder. I offer Stock stroke through +7 with stock cylinders. Any more than +4 stroke requires case modifications. Quote Link to comment Share on other sites More sharing options...
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