Lowering my compression
08-10-2009, 01:05 AM
#1
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Lowering my compression Hi, considering adding a blower to my H/C/I ls6 in my Zo6. My compression is approx 11.2:1 and I would like to lower it. I am running AFR205's milled .024 and a .040 cometic gasket. How thick of a gasket can I run? I would like to at least bring it down to 10:1
08-10-2009, 08:34 AM
#4
Get a thicker head gasket. Keep those heads and just replace the pistons if you do not have a built bottom end already. Everyone will say well since you already have it out just replace everything like rods, bearings etc...It's up to you what you want to do. I would get a piston that will lower compression and can take some abuse. Replace the rod bolts while you are at it.
08-10-2009, 12:43 PM
#6
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selling the AFR's is an option, just really didnt want to since they are a nice head and I got them for next to nothing from a friend. Changing pistons at this time is not going to happen. Its in the plan but just not yet because when I tear it apart I am going to do it right. Studs, rods, pistons ect ect.....
08-10-2009, 01:04 PM
#7
You can run boost on the compression your at just dont get greedy. Keep it low with high octane fuel, meth kit if you have the $$$ and a safe tune. Then save up and build a nice forged, head/cam moter with 9.5:1 (+-) compression and turn up the boost. Also dont skimp on the fuel system... If your master plan is to make 550 + to the wheels go for a dual pump set up right away.
https://ls1tech.com/forums/forced-in...rocharger.html
https://ls1tech.com/forums/forced-in...rocharger.html
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08-10-2009, 02:03 PM
#8
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My plan was 5-7 PSI, with a meth kit. Probably going to use a racetronix pump with a BAP and 60lbs injectors for now, then I will install a custom boost referenced fuel system using a A1000 or somthing along those lines.
