Head work for 4KQT (extended w/more Q's)

[JShadzi at aol.com]

In a message dated 9/27/00 11:38:31 AM Pacific Daylight Time, 
enzeder at home.com writes:

<< Some questions tumbling around in my head:
 1. Are there any sodium filled valves bigger than 33mm (say35-36mm) that'll 
 fit the MC engine?
 2. If yes, will these fit along side 40mm intake valves (have to ask).
 I've heard that in turbo'd engines, it's a good idea to increase exhaust 
 valve size to increase exhaust efficiency (and I suppose turbo efficiency). 
>>

    There is not another exh. valve bigger that I know of.  A 35mm valve, 
however, will fit next to a 40mm valve in normal trim.  
Javad