Re:

[bbell@csn.net (Bruce Bell)]

>	talking about compression ratio (cr)...what determines the cr in the 
>5tq?  pistons only, pistons and head volume, or head only.
>	Here's the story:  my '86 5ktq has from what i can tell a non-t head.
>	What cr do I have?  The block is original.
>
>	Thanks, ciao,
>
>	Phil Dupin

How can you tell it is a "non-turbo" head?  Does it look different? Casting
marks? If Some one used an early head then you have solid lifters, a
slightly smaller combustion chamber, valves that are considerably smaller
and oil/water galleys that don't match up unless welded properly. If your
head is newer (hydraulic lifters) then I agree with Scott. CR is most likely
the same and you have either 38 or 40mm intake valves and noi longer have
the sodium exh. valves.
  

Bruce

bbell@csn.net (Bruce Bell)