unshrouding valves on LT1 heads...cc change?
unshrouding valves on LT1 heads...cc change?
Just wondering what you guys who run ported heads with unshrouded 2.02/1.6 valves get for chamber size with .010 milled heads. Need to know an aproximate number so I can finish my motor. Thanks
With the number of responses, it may become obvious the answer is debatable. It will depend on what the cc of the heads was to begin with, (54-57 1/2) and how much/to what degree of unshouding you actually do. 010" removal is worth about a cc and a half, so now the heads are 52 1/2-56 plus a guesstimate of 1 to 2 1/2 cc stock removal for unshouding. So now you end up with anywhere from 53 1/2 to 58 1/2.
Last edited by arnie; Jan 2, 2004 at 01:32 PM.
Oh well...gives me an idea...I guess the best thing to do is use a burette and figure it out. Kinda beats the point of using LT1 heads though, unless I deck them further, which I really dont want to do...
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