The 3.5" Pulley. - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

Reply
 
 
 
Thread Tools Search this Thread
Old 07-03-2009, 10:03 PM   #1
Senior Member
Posts like a Turbo
Thread Starter
 
Bwayney's Avatar
 
Join Date: Feb 2009
Location: Indiana
Posts: 260
Thanks: 0
Thanked 0 Times in 0 Posts
Bwayney is on a distinguished road
Default The 3.5" Pulley.

Currently i have a 02 SSEI with only 2 current mods: 180* T-stat and a Off the shelf tune from ZZP.

Could i safely run a 3.5" pulley with these current mods without risking KR?

If not, what other mods do i need to get?
Bwayney is offline   Reply With Quote
Old 07-03-2009, 10:23 PM   #2
Senior Member
True Car Nut
 
Black Pearl's Avatar
 
Join Date: Apr 2009
Location: STC, MN
Posts: 3,301
Thanks: 0
Thanked 1 Time in 1 Post
Black Pearl is on a distinguished road
Default

I believe you need spark plugs that are one heat range colder. I have NGK V-Power TR-55'* in mine, with a 3.4" pulley, 180 Stat and factory tune. All is well for me
Black Pearl is offline   Reply With Quote
Old 07-03-2009, 10:47 PM   #3
Retired Senior Admin

Expert Gearhead
 
Danthurs's Avatar
 
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Thanks: 0
Thanked 16 Times in 13 Posts
Danthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to all
Default

Every car is different. I can not say nor can anyone else if your safe with a 3.5" pulley. Only scanning will say for sure. 3.5" is the smallest I would recommend for a mostly stock engine. Chances are you should be fine. Ive seen two cars side by side, both with a 3.4" pulley, both with the same ZZP tune and basic support mods. One car with a PLOG, and 1.9:1 rockers had zero KR, like you would expect. The other car had headers and a XP hot cam. With that set up you should be able to run a 3.3, or even a 3.2 pulley, but he had 3* of KR with a 3.4. Like I said, every car is different.
Danthurs is offline   Reply With Quote
Old 07-03-2009, 11:34 PM   #4
Senior Member
Posts like a Turbo
Thread Starter
 
Bwayney's Avatar
 
Join Date: Feb 2009
Location: Indiana
Posts: 260
Thanks: 0
Thanked 0 Times in 0 Posts
Bwayney is on a distinguished road
Default

how do i scan for knock retard?? Where is a good place to buy colder spark plugs?
Bwayney is offline   Reply With Quote
Old 07-04-2009, 12:04 AM   #5
Retired Senior Admin

Expert Gearhead
 
Danthurs's Avatar
 
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Thanks: 0
Thanked 16 Times in 13 Posts
Danthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to all
Default

You will need something like a aeroforce scan gauge. I get my autolites at Menards.
Danthurs is offline   Reply With Quote
Old 07-04-2009, 12:14 AM   #6
Senior Member
True Car Nut
 
Purplehazeir's Avatar
 
Join Date: Sep 2008
Location: Arlington, WA
Posts: 7,979
Thanks: 0
Thanked 1 Time in 1 Post
Purplehazeir is on a distinguished road
Default

If you're going to drop pulley sizes, definitely get an Aeroforce Scan Gauge - it'* cheap insurance and if you have too much KR then you can go for a custom tune. I dropped to a 3.5 pulley and had no problems. I'm also running a 180T and 605 plugs. So far, no KR noted on my set up, but every car is different.
Purplehazeir is offline   Reply With Quote
Old 07-04-2009, 12:24 AM   #7
Senior Member
Posts like a Turbo
Thread Starter
 
Bwayney's Avatar
 
Join Date: Feb 2009
Location: Indiana
Posts: 260
Thanks: 0
Thanked 0 Times in 0 Posts
Bwayney is on a distinguished road
Default

I actually work at menards hah. the spark plugs there dont say 104 on them, they have iridium, iridum copper, heavy duty, etc. Which ones do i get?
Bwayney is offline   Reply With Quote
Old 07-04-2009, 12:28 AM   #8
Senior Member
True Car Nut
 
Purplehazeir's Avatar
 
Join Date: Sep 2008
Location: Arlington, WA
Posts: 7,979
Thanks: 0
Thanked 1 Time in 1 Post
Purplehazeir is on a distinguished road
Default

Use Autolite'*. 605'* (one heat range colder), 104'* (two heat ranges colder) or 103'* (three heat ranges colder). Because you dropped you T-Stat t0 180, run the 605'* like I am.
Purplehazeir is offline   Reply With Quote
Old 07-04-2009, 12:34 AM   #9
Senior Member
Posts like a Turbo
Thread Starter
 
Bwayney's Avatar
 
Join Date: Feb 2009
Location: Indiana
Posts: 260
Thanks: 0
Thanked 0 Times in 0 Posts
Bwayney is on a distinguished road
Default

i dont know where to find them however. they sell autolites at my work, but they dont say 104 or 105 on them, they just say autolite copper or iridum on them. Installing spark plugs are a bitch, well the ones in the back are.
Bwayney is offline   Reply With Quote
Old 07-04-2009, 01:07 AM   #10
Senior Member
True Car Nut
 
Purplehazeir's Avatar
 
Join Date: Sep 2008
Location: Arlington, WA
Posts: 7,979
Thanks: 0
Thanked 1 Time in 1 Post
Purplehazeir is on a distinguished road
Default

I get my plugs at Autozone or RockAuto. The ones in the back can be a bit challenging, but far from a bitch. A bitch would be replacing the plugs on a 1992 Chevy Astro van.
Purplehazeir is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
"ban him" in "new car" thread ga93sle Lounge 3 09-23-2006 09:23 PM
The difference between "guts" and "balls" sse1990 Lounge 8 08-31-2006 11:31 PM
Where is the "chime" / "dinger"? PPrash 1992-1999 6 11-21-2005 09:11 AM
'91 L "snakes" intake on a "C" engine ? padgett 1987-1991 5 07-21-2003 08:12 PM
"D" or "OD" ? BusMaster007 1992-1999 23 01-09-2003 03:09 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 01:43 AM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.