LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Compression

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Old Oct 7, 2003 | 03:48 PM
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badazzcamaro97's Avatar
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Compression

I need to know what the stock compression ratio and what would be the best piston to run to stay about the stock ratio.
Old Oct 7, 2003 | 03:50 PM
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Stock compression ratio in the LT1 is 10.4 to 1. Can't help you on piston choice.
Old Oct 7, 2003 | 04:46 PM
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What other changes are you making? Overbore for the new pistons? Anything else?
Old Oct 8, 2003 | 12:20 PM
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I plan on rebuilding to stock compression and add a vortech supercharger.
Old Oct 8, 2003 | 02:56 PM
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Not a great idea. With stock compression and 6psi of boost, your compression ratio will be around 14.8 to 1. Way to high for pump gas.
Old Oct 8, 2003 | 08:45 PM
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I was using the project shadow from PHR as a reference, they did the same, what should I do different?
Old Oct 8, 2003 | 09:08 PM
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Originally posted by badazzcamaro97
I was using the project shadow from PHR as a reference, they did the same, what should I do different?
Drop down to at least 9.0:1cr with a blower. Rule of thumb= you will always make more boost with boost than you will with compression.
Old Oct 8, 2003 | 09:15 PM
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If I was to run 9.0:1 compression with the vortech supercharger with 6psi, what kind of power would I be looking at
Old Oct 8, 2003 | 09:29 PM
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Originally posted by KCFormula
Drop down to at least 9.0:1cr with a blower. Rule of thumb= you will always make more boost with boost than you will with compression.
I think he meant you will make more power with a lower c/r and more boost, than a higher c/r and less boost.
Old Oct 8, 2003 | 09:31 PM
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Originally posted by badazzcamaro97
If I was to run 9.0:1 compression with the vortech supercharger with 6psi, what kind of power would I be looking at
That just depends on your setup. What heads, what cam, what exhaust, what tune....
Old Oct 8, 2003 | 10:05 PM
  #11  
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I would be running ported stock heads with a mild comp cam and 1.6 rockers
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