What affect will run one step colder plug have
01-13-2004, 01:41 PM
#1
On The Tree
Thread Starter
Join Date: Jan 2004
Posts: 120
Likes: 0
Received 0 Likes
on
0 Posts
What affect will running a one step colder plug have What affect will running a plug one step colder on my 01 Z28 have? Currently I have 60,000 mile on it and I'm getting ready to change the plugs. The engine is essential stock (MTI airlid with k&N, 160 thermo) but the gears have been changed to 4.11 and the suspesnion has been redone with spohn parts. I was looking at the Irdium IT20 because I believe that is one step colder than the IT16 stock heat range. Currently like all LS1 I do have a slight ping under hard accelration that nothing seems to get rid of. I thought the colder plugs might help a little with that. What are your thoughts? Thanks in advance for your help.
Last edited by AZ28DRIVER1; 01-13-2004 at 01:53 PM.
01-13-2004, 04:43 PM
#3
9 Second Club
Join Date: Nov 2001
Location: Bay Area, CA
Posts: 1,445
Likes: 0
Received 0 Likes
on
0 Posts
just make sure you are not running too rich a cooler plug could foul a lot easier..... but other than that I run TR6s gapped at .045 on my stroker.... a stock car, id go with the TR55.
01-13-2004, 06:57 PM
#6
TECH Senior Member
They won't hurt you. I've been running TR-6s NA for years with no problems. I like that they push the ragged edge of detonation up a smidge. That way I can run a little leaner (and leaner is meaner!) with a little more timing advance. 
