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Old 02-28-2011, 08:30 PM   #1
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Default how much can i bore out a 6.0 iron block?

lets see.. i have a 2 spare motors.. 1 lq4 and one is a lq9..

i have one lq4 in my truck right now


so i want to bore this one out.. i heard 370cc = .30 over ?

is that all i can go over?

forged pistons and rods.. keep crank stock and boost it??

feedback much appreciated

thanks..
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Old 02-28-2011, 08:48 PM   #2
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tas bien guey , ya te esplique todo esto ase rato !
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Old 02-28-2011, 08:58 PM   #3
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stfu lol

but ur application is n/a

im trying to boost this fool.. haha
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Old 03-01-2011, 04:17 PM   #4
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ttt.....
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Old 03-01-2011, 04:24 PM   #5
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4.040 is the biggest I would go with boost
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Old 03-01-2011, 06:58 PM   #6
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IMO there isn't much extra to be had if you go +.030 or say +.060.
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Old 03-01-2011, 07:37 PM   #7
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You must sonic test to know for sure. I have seen a few over .300" thick that would easly take a +.100 bore and a couple that are less than .200" thick. Most are around .225-.250" thick on the thrust but get down to .100 between the cyls. Id only go +.005" unless testing.
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Old 03-01-2011, 11:38 PM   #8
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hmm.. i just say ima go .30 over and see where i go from there
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Old 03-02-2011, 12:05 AM   #9
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I would go 4.005 at first so if you have to rebuild the engine, you have another off the shelf piston size still left (4.030") without having to go to custom pistons ($$)
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Old 03-02-2011, 05:55 AM   #10
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AutoTec pistons have a 4.005'', 4.010'', and 4.020" both 3.622, and 4'' stroke dish or flat top.
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Old 03-02-2011, 05:55 AM
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