flat top or dished

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12-24-2003 | 12:24 PM

zr8d

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Joined: Oct 2003

Posts: 123

From: boise, id

flat top or dished

I've got a '77 z and I'm looking at doing some head work, port & polish, bore, etc. Does my z have the flat top or dished pistons? What's the difference?

12-24-2003 | 05:44 PM

Z kWick

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I'm pretty sure the '77 L28 has #N42 dished pistons. The dished pistons tend to lower the compression in the cylinders. Hope that helps...

10-19-2004 | 11:30 PM

myxtaz

Registered User

Joined: Oct 2004

Posts: 92

From: Portland Or

Quote:

Originally Posted by zr8d

I've got a '77 z and I'm looking at doing some head work, port & polish, bore, etc. Does my z have the flat top or dished pistons? What's the difference?

'75----'78 all dished all F-54 blocks that are not turbo have flat topped pistons .