help on raising compression on lq9 6.0...
#11
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thanks man, that helps alot,so this is based on using stock head gasket right? so now i need some 243's from somewhere cheap haha, so one more question could i mill the 243's lets say .20 if i wanted too...
#12
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Yeah that was all based on stock compressed height (GM MLS) gaskets.
For 243s, check out the Corvette Forum. Parts go cheap over there.
And yes, you can mill 243's. Patriot does 243's in 58cc chambers, so you've got plenty of room.
Honestly, though, I don't think you'll be able to tell any difference between 10.7:1 and 11:1.
#13
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I'm not sure how much you can mill b4 causing PVC problems but I would definatly use a cometic .40 gasket but be sure to spray it with copper gasket spray to keep it from blowing that will help with quench and compression
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With the stock 317's, it put out 337hp & 373ft lbs. With the 243's, it put out 355hp & 396ft lbs. So it basically gained 18hp & 23ft lbs from the swap.