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compression ratio

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Old Jul 11, 2004 | 02:52 PM
  #1  
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88Z
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From: Atascadero, CA
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compression ratio

What kind of compression would i get with a stock L98 block and 083 heads milled .010?
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Old Jul 11, 2004 | 06:22 PM
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ede
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From: Jackson County
zero you'd need pistons and gaskets along with some other parts plus you'd need to know the specs if you had pistons and all the other parts
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Old Jul 11, 2004 | 06:58 PM
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Just for kicks let's say stock everything, which would make it 9.3, except for heads milled .010
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Old Jul 11, 2004 | 06:58 PM
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You may want to do a little search, I don't recall the cc's of those heads off the top of my head.
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Old Jul 11, 2004 | 07:00 PM
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C'mon guys, it's a freakin stock L98 with original heads, i'm just wondering how much milling them that much would change my compression ratio
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Old Jul 11, 2004 | 07:04 PM
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And quite honestly I freakin' don't know. I told you to search because I know RB has answered these type of questions before and that guy has all this sh*t memorized.

Seeing as I can't make him magically appear, the next best thing I can tell you is to search. Go to the tech area, get the regular info and then use google to figure it out. I'm not going to do that for you and it's not that difficult to do, just time consuming. Or you could wait and see if RB sees this, or you could PM him.
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Old Jul 11, 2004 | 07:08 PM
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Awesome, thanks for the advice. I tried doing a search on here, but i gotta admit, it was a half-assed attempt.
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Old Jul 11, 2004 | 07:10 PM
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The Technical articles don't come up on a search. They are off the Home page.
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Old Jul 11, 2004 | 08:06 PM
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From: Ontario, Canada
Car: 1988 Firebird S/E
Engine: 406Ci Vortec SBC
Transmission: TH-350/3500stall
Axle/Gears: 7.5" Auburn 4.10 Posi-Traction
milling the head .010" will chop off about 1.5cc's

If you use the same stock type .015" shim head gasket
as origional your cr will be 9.5:1

if you reinstall the head with a replacement .040" composite gasket your cr will be lower than stock even with the head milling. 8.98:1
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