ok guys i was online http://www.partsamerica.com/productd...artNumber=4177 looking for pn# 4177 from this forum http://web.camaross.com/forums/showthread.php?t=431689

and it said it wouldnt fit a 93z28 what do i need?

Thanks

- Mike

 

It probably said they wouldn't work because they are not within the stock heat range, they are one-step colder plugs. They will still thread into the heads though and colder plugs are generally the direction you want to go when spraying.

 

Tr6's fit just fine, use them in my 93.

 

Same here