Can someone double check what my compression ratio might be with a Lq4 with stock pistons (9.40:1) and 243 heads cut to 59cc with stock MLS gasket which is .054?? I've searched a few forums and no luck...
I think i'm going to be under 11 to 1 compression from what i understand..
Last edited by whitesilvy04; 12-28-2008 at 12:11 PM.
Engine Compression Ratio (CR) Calculator
Maybe that can help you a little.
If you havnt installed those heads yet I suggest havin a machine shop check those out. I have a set of 853 stage IIs from them that the valve job had a .008 run out (boderline is like.006), they set the guides up twice the clearance that it shoulda been and they claimed 290cfm but flowbenched 278cfm. I had to get all that fixed and had them ported to 308cfm now
1993 Gmc 02 ls1 Circle D 3400 stall, long tubes, 220/224 cam stage 3 heads, weiand intake, auburn posi, 389rwhp 352ft/lbs
should be around 11.3
but i would check the deck height on the 243s after you milled them
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it ain't that I'm too big to listen to the rumors, It's just that I'm too damn big to pay attention to 'em..That's the difference
thanks for the help and advice guys
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