| Re: The "4.9 liter turbocharger, stage 1" thread.
yeah thats cool.. to lower the compression, youd want to get some quad-4 pistons, they fit and will give you about 9:1, of course getting some head work done will lower it slightly more, 8.6-7 to 1, thereabouts.. I woudl HIGHLY recommend geting LT1 1.94 in. intake valves for this when you get the head work done.. get new exhaust valves too
but for a 12 valve 6 cyl 3.8 buick...order them new |