I've been doing some compression calculations and I need to know how far down in the cylinder bore is the piston at TDC? The block is a stock '88 LO3 305 and the rotating assembly is stock as well.

-Mark W.
'88 SC Camaro w/ 305 TBI

 

PS.
Does anyone know if these pistons are dished or flat-tops? I don't remember seeing any valve reliefs on 'em when I had the heads off and I didn't pay enough attention to the pistons to remember if they were flat or dished. If they are dished, anyone know how many cc's? Stock head gasket thickness is .020", right?

-Mark W.
'88 SC Camaro w/ 305 TBI

 

There's actually a name for that, it's called deck clearance. It varies slightly from one individual motor to another. Typically it's about .025-.030" in a stock motor.

I'm not sure about the piston configuration in a TBI motor.

Stock head gaskets, if they're composition, are more near .035"-.040". That's probably what you have.

------------------
"So many Mustangs, so little time..."
ICON Motorsports

[This message has been edited by RB83L69 (edited January 27, 2001).]