C CoiledSkunk New Member May 31, 2007 13 0 0 May 31, 2007 #1 May 31, 2007 #1 The GT40X heads come in two different chamber volumes, 58 & 64cc. Which is needed to maintain the stock compression ratio?
The GT40X heads come in two different chamber volumes, 58 & 64cc. Which is needed to maintain the stock compression ratio?