98TA_vert

ok im running a stock bottom end with a set of tsp 5.3 stg 2.5 heads and a torquer v2 cam, weiand intake, flowtech headers do I use the stock heat range plug or go colder and is there any disadvantage to using a iridium plug i notice a lot of guys use tr55 v power i was thinking about going with the iridium IX's... btw i tried search a few times but i got tired of staring at a white screen for 5 minutes.

TIA
dave

gts500

man i used both the TR55 v and the IX and now am usin IX one step colder .

if you are not runing nitros on your car the stock heat range IX will be the ideal choice the TR55 v power just been the old school choise, now its iridium genration you cant go wrong with it .

JPH

iTrader: (2)

autolite #103.

Z28/2002

iTrader: (27)

I'm running the TR6s in my H/C TA

I also ran the Autolite 103s in my cam/spray Z28 with no problems