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5.3 to 5.7 Newbie question

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Old 03-25-2011, 12:16 PM
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Default 5.3 to 5.7 Newbie question
hi im in the middle of rebuilding a lm7 from a 01 sierra, ive searched on here and google and i cant find wat im looking for.... im debating on whether to give the shop the okay to bore it to the 3.898 to use ls1 pistons, will it require a tune to get running, how much will the extra bore effect the computer, will i be able to drive it to a shop so they can tune it...? all other components left stock. with the exception of a small 205/204 @.05" w/stock lift.


thanks for your patience.......flame suit on
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Old 03-25-2011, 02:10 PM
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anyone anyone? Bueller........Bueller.......Bueller?
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Old 03-25-2011, 09:27 PM
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Yeah it'll run just not the greatest...Start up on my ls1 was with the stock tune FWIW...
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Old 03-25-2011, 09:55 PM
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What's the overlap on that "small 205/204 @.05" w/stock lift" cam?
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Old 03-27-2011, 12:31 PM
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112 lsa, overlap -20 @.05" (cam card doesn't show me advertised duration.)
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Old 03-27-2011, 06:47 PM
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You should make the trip to the tuner just fine.
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