Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - Want more power out of 427
View Single Post
  #13 (permalink)  
Old 10-06-2012, 01:55 PM
techinspector1's Avatar
techinspector1 techinspector1 is offline
Last wiki edit: DynoSim combinations Last photo:
Join Date: Oct 2005
Location: Zephyrhills, Florida, USA
Age: 75
Posts: 15,336
Wiki Edits: 326

Thanks: 1,503
Thanked 2,020 Times in 1,560 Posts
Originally Posted by View Post
Most 427 BBC high compression pistons can't be cut to flat top safely.
I agree. I'm no engineer, but from what I've been able to put together over the years, good engineering practice dictates that the crown thickness will equal about 7% of the diameter for a naturally-aspirated piston. The crowns on dedicated blower pistons will be thicker than those on naturally-aspirated pistons, so you would want to be adding material, not cutting material away. I don't know what the percentage of crown thickness to diameter would be with a dedicated blower piston, but common sense tells me 8% to 9%.
Reply With Quote