Can you change the valves and the valve springs in a 2001 spec LS6 head to the 2002-03 spec valve and spring? Or do you have to buy a whole new head/s?

 

From Soggin Dickey Gm performance Parts...

"Several questions have been asked about the price difference and why there are two different part numbers for the 2001 and 2002 bare LS6 cylinder heads. One of the most important facts to know about GM part numbers is that there are about four basic distinct styles of part numbers within the GM hierarchy(internal, industrial, service replacement, and racing), only two of these have any real concern to the typical consumer. One being service replacement part numbers, such as the 2001 and 2002 LS6 cylinder heads.

These parts have a very strict set of guidelines, as in zero tolerance from the engineering print and specification. Something as simple as tapping one threaded hole an additional 0.100" deeper will require a complete new set of prints, validation testing, and a new part number in the GM system. If a change is made in suppliers, even though the part is still being manufactured to the same engineering spec and nothing else has changed, a new part number can and more than likely will be generated. How a part is
packaged can cause part number changes! In a nutshell and without divulging any internal secrets, the 2001 head was a very limited production run. Small production runs equal increased cost. There was an anticipation by
engineering that a change might be required for the 2002 LS6 head to meet specific assembly line requirements, hence a new part number. The change had absolutely nothing to do with fit, form, or function of the LS6 cylinder head. It was also determined the '02 head would be used for the '03 models and that the new part number would also replace the 2001 service replacement part number when that stock was depleted. Therefore a lot more production and a lot less cost. For all practical purposes the bare cylinder heads are
identical.

Nicky Fowler
SDPC "




[Modified by kewlbrz, 10:45 AM 9/16/2002]

 

Thanks :cheers:

 

Damn, Shawn! You da' Man! A friend and I were looking at bare casting Z06 head prices this weekend and were wondering why there is such a big difference in '01 and '02 prices, '02's being cheaper.

Thanks! :cheers:

 

Once again Kewlbrz posts with the correct info...........he is the man . :yesnod: :yesnod: :yesnod: :cool: :cheers:


[Modified by binksZ06, 6:21 PM 9/16/2002]

 

:yesnod: :D :cheers: