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Author Topic: Need to figure something out. Pure Stang ¯ Member # 7251 posted                              I want to figure out what my comp ratio is going to be. the pistons are 9.5-1 with a 64cc head and my heads are 58cc's. how would i got about figuring this out? or if somone knows this off the top of thier head feel free to let me know. -------------------- HEART BREAKER R.I.P Willie Guzman (5ltrsvt) you will be missed brother. 04/24/87 - 11/23/2012 90 lx 347 RIP 86 gt 89 lx- next project Posts: 6497 | From: San Jose | Registered: Nov 2006  |  : svfreerider87 ¯ Member # 5748 posted                                 Turbo50 dan, this post needs your attention! haha he sent me a calculator that had everything I can't find it, but dan if you read this post it up! -------------------- Dreamspeed Motorsports Posts: 1685 | From: Sunnyvale | Registered: Jun 2005  |  : Pure Stang ¯ Member # 7251 posted                              yes post it up . where my gear heads at -------------------- HEART BREAKER R.I.P Willie Guzman (5ltrsvt) you will be missed brother. 04/24/87 - 11/23/2012 90 lx 347 RIP 86 gt 89 lx- next project Posts: 6497 | From: San Jose | Registered: Nov 2006  |  : JohnB Tech Moderator Member # 969 posted                              Is it zero-deck? What is the thickness of your head gasket? -------------------- 1965 Shelby Cobra 1993 Cobra 2012 F150 Raptor 2020 GT500 Posts: 6523 | From: Orlando FL/Redding CA | Registered: Mar 2002  |  : Pure Stang ¯ Member # 7251 posted                              i have no idea about the deck. the thickness if the gasket is .039. -------------------- HEART BREAKER R.I.P Willie Guzman (5ltrsvt) you will be missed brother. 04/24/87 - 11/23/2012 90 lx 347 RIP 86 gt 89 lx- next project Posts: 6497 | From: San Jose | Registered: Nov 2006  |  : 90gtvert ¯ Member # 8697 posted                              Assuming they are flat top pistons with a 64CC head volume and 9.5:1 compression, also assuming they are not zero decked (0.016 below deck) With a 58CC cylinder chamber volume wth .039 head gasket .021 Head Gasket ~10.4:1 for 302ci ~10.5:1 for 306ci .039 Head Gasket ~9.88 for 302 ~10.0 for 306 Mike Edited for new Head Gasket ... sorry [ January 27, 2009, 02:39 PM: Message edited by: 90gtvert ] -------------------- 90 GT Vert 93 GT http://www.110octanephotography.com Posts: 1889 | From: Bay Area | Registered: Oct 2008  |  : Pure Stang ¯ Member # 7251 posted                              sent pm -------------------- HEART BREAKER R.I.P Willie Guzman (5ltrsvt) you will be missed brother. 04/24/87 - 11/23/2012 90 lx 347 RIP 86 gt 89 lx- next project Posts: 6497 | From: San Jose | Registered: Nov 2006  |  :

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