highest compression ratio
#1
highest compression ratio
whats the highest compression ration u can run on the 5.3Ls while still using pump gas? and or how much can u shave off ur stock heads? everything else being stock in/on the block, thanks
#6
PT's Slowest Truck
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There are a few good dynamic compression ratio calculators on the net...I think I have one bookmarked on my computer at home (I'm at work now)...I'll try and check tonight. As strokerace03 mentioned, it's the dynamic compression ratio that you have to worry about...if you go with a big cam with a lot of overlap it will bleed off pressure and allow you to run a higher SCR...
#7
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Also how you tune makes a big difference too. My old LQ9 setup had around 11.5 static and if I remember correctly around 8.5 dcr and depending on how aggressive or weak I tuned the timing I could run 87 no problem.