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Heads on a stock bottom end?

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Old Jun 23, 2012 | 06:07 PM
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2000xSILVERxWS6's Avatar
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Default Heads on a stock bottom end?

How much will a stock bottom end hold up against? Would there be any issues with raising compression on a stock ls1? Would a stock ls1 with +100,000 miles be able to handle stg 2.5or 3 heads (ls6 or 5.3) from tsp? I know it depends largely on the car in particular, but all opinions are appreciated, thanks guys.
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Old Jun 23, 2012 | 07:08 PM
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Its been done thousands of times. Just put H/C/I on my car at 125k miles
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Old Jun 23, 2012 | 10:34 PM
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Absolutely not going to be a problem if the car has been/is being maintained properly. There are countless guys on here with raised compression on their high mileage stock shortblock LS1's putting down strong numbers and they hold up just fine.
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Old Jun 24, 2012 | 12:25 PM
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Originally Posted by 2000xSILVERxWS6
How much will a stock bottom end hold up against? Would there be any issues with raising compression on a stock ls1? Would a stock ls1 with +100,000 miles be able to handle stg 2.5or 3 heads (ls6 or 5.3) from tsp? I know it depends largely on the car in particular, but all opinions are appreciated, thanks guys.
IMO do a compression and leak down tests. Based on the results you'll have a clearer idea of the health of your motor and how to proceed in modifying.
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Old Jun 24, 2012 | 12:45 PM
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You won't need stage 3 ported 243's. 2.5 at the most and you SHOULD be fine barring any problems already present you aren't aware of.
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Old Aug 28, 2012 | 07:59 PM
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hey guys just found this thread and you should do what im going to have done to mine if you canafford it. i have no buget im just saving for everything i like but i have talked to texas speed countless times and hours and have decided on doing 227 heads ms4 cam fast 102/102 and then go 383 . should yeild great results just saying
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