C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

domed or flat pistons?

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Old Aug 15, 2003 | 03:33 AM
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Default domed or flat pistons?

how much extra performance would you get from dome pistons as opposed to flat?
im getting my engine re-built cause im gettin a little oil on one of my spark plugs..
thanks
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Old Aug 15, 2003 | 05:33 PM
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Default Re: domed or flat pistons? (aussie 84vette)

It's not that simple.
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Old Aug 15, 2003 | 06:03 PM
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Default Re: domed or flat pistons? (aussie 84vette)

piston choice depends on the compression ratio you want/need for optimum power

just changing your pistons on an 84 wont do anything but force you to use expensive gasoline
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Old Aug 16, 2003 | 01:51 AM
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Default Re: domed or flat pistons? (vader86)

cool thanks vader :)
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Old Aug 16, 2003 | 12:47 PM
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Default Re: domed or flat pistons? (vader86)

just changing your pistons on an 84 wont do anything but force you to use expensive gasoline
Wrong. It will increase compression ratio which will increase horsepower. But then you have to make sure you don't get spark knock, causing the ECM to take out timing which puts you back where you started in the first place.
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Old Aug 16, 2003 | 01:24 PM
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Default Re: domed or flat pistons? (flyersfan1088)

[QUOTE]just changing your pistons on an 84 wont do anything but force you to use expensive gasoline

Wrong. It will increase compression ratio which will increase horsepower. But then you have to make sure you don't get spark knock, causing the ECM to take out timing which puts you back where you started in the first place.[/QUOTE

:iagree: Thanks. I didn't wan't to start. :crazy:


[Modified by offershore, 6:25 PM 8/16/2003]
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Old Aug 16, 2003 | 02:47 PM
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Default Re: domed or flat pistons? (offershore)

Then theres the matter of quench. But I don't want to get into that either.

Flat is best. :D


[Modified by britvette, 8:45 PM 8/17/2003]
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Old Aug 19, 2003 | 04:41 AM
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Default Re: domed or flat pistons? (flyersfan1088)

yeah sounds abit complicated i might just leave them how they are.. thanks guys
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Old Aug 19, 2003 | 08:23 AM
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Default Re: domed or flat pistons? (aussie 84vette)

I would leave them flat, and build the compression up with the heads. Shave them a little.

:cheers:
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