not sure about 98's but I have a 99 and have issues with 100hp wet kit and I do have a vortech t-rex pump inline just in case. I am fine with 75hp jets but 100hp is still lean for whatever reason...again I am "wet" so I would think dry would definately need more fuel pump if not injector too.

 

Would I need a new fuel system for a Heads/cam/ls6 intake and a 75 tnt dry shot? The heads are stage 2 mms heads and a 224/224 112 LSA mms cam. Several people say the injectors will be fine since the 98's were a little bit larger, and its a good idea to add another fuel pump. I plan to spray like once a month if that.. and its just an 'in case I have to use it' type setup. Also what kinda of NA power would be lost if you tune the pcm for nitrous use, compared to tuning it for NA only? Thanks!
-dan

 

I thought the larger injectors started in 2000 <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />

 

Nope, the 99 and 00 model years had the smaller injectors. 98's had the larger injectors, then gm switched to smaller ones, then in 01 they switched back to the larger injectors and kept with it till the end of 02.
98 = ~28.6
99-00 = ~26.4
01-02 = ~28.8

Hope that helps.

Anyone else have a fuel system recommendation for me?
Thanks
-dan