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		| RE: 390 Compression Ratio Question | 
	 
		| By Tim Johnson - 08/25/2002 12:31:00 AM; IP 216.222.116.96 | 
	 
		Iffin I rememberz rite, a 390 4bbl engine with those pistons was originally rated @ 10.5-1. Installing the larger chamber CJ heads dropped the compression to 9.5-1 or thereabouts. 
  Hope this helps!
  TJ  | 
	 
 
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