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RE: Pulley Size?

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RE: Pulley Size? - 1/30/2008 9:16:31 PM   
lav74

 

Posts: 178
Joined: 8/7/2007
Status: offline 		They will probably work ok, but not optimal.  The spark is too cold... it could cause misfires, and cause your plugs to wear out too quick.  Your gap will widen, and you'll end up seeing more misfires later on.

I made 234whp with no headers, and stock TB... when I added headers, I hit almost 250whp... still on 104 plugs with 10k miles on them.  :-)

_____________________________


2004 Supercharged SS
12.536@109.89mph
Mod List: http://www.clubgp.com/cgi-asp/detail.asp?intOwnerID=19183
RebuilT! - L67 block, SS4 cam, M112 hybrid @ 3.0", home-ported heads, TOGs, TLC

(in reply to ExplosiveSoundz)
Post #: 11
RE: Pulley Size? - 1/30/2008 9:21:39 PM   
ExplosiveSoundz



Posts: 1248
Joined: 6/4/2007
From: Latrobe, Pennsylvania
Status: offline
quote:

I made 234whp with no headers, and stock TB... when I added headers, I hit almost 250whp... still on 104 plugs with 10k miles on them. :-)


What was your mod list for that?

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(in reply to lav74)
Post #: 12
RE: Pulley Size? - 1/31/2008 4:33:54 AM   
lav74

 

Posts: 178
Joined: 8/7/2007
Status: offline 		234whp - CAI, 180*t, 104 plugs, 3"DP, hi-flo cat, u-bend/res removal, 3.4" pulley, DHP v1.0 PCM, no special tuning, WPUD pulley.

Add TOG headers, no other tuning, still canned PCM, 249whp.

_____________________________


2004 Supercharged SS
12.536@109.89mph
Mod List: http://www.clubgp.com/cgi-asp/detail.asp?intOwnerID=19183
RebuilT! - L67 block, SS4 cam, M112 hybrid @ 3.0", home-ported heads, TOGs, TLC

(in reply to ExplosiveSoundz)
Post #: 13
RE: Pulley Size? - 1/31/2008 5:07:59 PM   
Submariner

 

Posts: 47
Joined: 1/28/2008
Status: offline 		Which (If either) will give me more power Downpipe with the resonator removed or downpipe keep the resonator and replace the stock mufflers? If its a toss-up I'd rather have the car sounding sweet outside.


< Message edited by Submariner -- 1/31/2008 5:08:27 PM >

_____________________________

04 SS Intimidator #2643 of 4000.
Engine mods: ZZP 1.0 PCM, Wizaired CAI, Stainless Plog & 3" downpipe W/High Flow cat, Resonator removed, Autolite 104 Plugs, 180 drilled T-Stat
Misc mods: Lowered 1.3 Front 1.5 Rear, Tinted all around, Remote starter

(in reply to lav74)
Post #: 14
RE: Pulley Size? - 1/31/2008 5:35:53 PM   
lav74

 

Posts: 178
Joined: 8/7/2007
Status: offline 		The resonator is restrictive, as is the u-bend.  Get rid of both, keep your stock mufflers. Your stock mufflers are non-restrictive up until you pass 300whp.  The sound is not too bad at all.  If you must change your mufflers for the sound, it won't affect your performance whatsever, but if you leave the resonator, you can chop the mufflers off, and it still won't help things, because your resonator is choking things up, causing boost stacking, and higher temps in your manifolds... that's a perfect breeding ground for KR..

Hope that helps explain things.

_____________________________


2004 Supercharged SS
12.536@109.89mph
Mod List: http://www.clubgp.com/cgi-asp/detail.asp?intOwnerID=19183
RebuilT! - L67 block, SS4 cam, M112 hybrid @ 3.0", home-ported heads, TOGs, TLC

(in reply to Submariner)
Post #: 15
RE: Pulley Size? - 1/31/2008 5:40:50 PM   
ExplosiveSoundz



Posts: 1248
Joined: 6/4/2007
From: Latrobe, Pennsylvania
Status: offline
quote:

Causing boost stacking,


A HORRIBLE term someone made up from CGP. =)

But perfect for describing it....

And those mod's are great, for a 3.4 pulley. During the tune, I ran a 3.6.

I put the 3.5 on AFTER the tune. so who knows what kinda HP I run now..

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(in reply to lav74)
Post #: 16
RE: Pulley Size? - 1/31/2008 8:12:35 PM   
lav74

 

Posts: 178
Joined: 8/7/2007
Status: offline 		Probably not much more, unless you re-tuned.  With each change in induction, your existing tune will react differently, throw off your fuel trims, causing inefficiency, or possibly even KR if the fueling isn't right.  Should have tuned with the pulley that you planned on running.  If you were seeing any KR at all with the 3.6, you'll be seeing alot more if you go with a smaller pulley.

Did you do any scans for KR on the road with the 3.6, 3.5 or only while on the dyno?

_____________________________


2004 Supercharged SS
12.536@109.89mph
Mod List: http://www.clubgp.com/cgi-asp/detail.asp?intOwnerID=19183
RebuilT! - L67 block, SS4 cam, M112 hybrid @ 3.0", home-ported heads, TOGs, TLC

(in reply to ExplosiveSoundz)
Post #: 17
RE: Pulley Size? - 2/1/2008 12:54:19 PM   
Submariner

 

Posts: 47
Joined: 1/28/2008
Status: offline 		Great that explains alot. I'll add the downpipe and pull the resonator (Much cheaper than new mufflers). Along with the CAI I should be fine for now. What do I need to do if it does throw a P0420?

_____________________________

04 SS Intimidator #2643 of 4000.
Engine mods: ZZP 1.0 PCM, Wizaired CAI, Stainless Plog & 3" downpipe W/High Flow cat, Resonator removed, Autolite 104 Plugs, 180 drilled T-Stat
Misc mods: Lowered 1.3 Front 1.5 Rear, Tinted all around, Remote starter

(in reply to lav74)
Post #: 18
RE: Pulley Size? - 2/1/2008 12:59:26 PM   
lav74

 

Posts: 178
Joined: 8/7/2007
Status: offline 		isn't that the code to smoke a joint (420).

Seriously though, that work shouldn't make you throw a code unless your cat has a problem, or your sensor is bad.  I'd also recommend going with a 3" hi-flo cat.... find a 3" In/Out for $75.... since you're doing that whole section anyways, going 3" from the DP to past the resonator will help alot with getting the exhaust out.

_____________________________


2004 Supercharged SS
12.536@109.89mph
Mod List: http://www.clubgp.com/cgi-asp/detail.asp?intOwnerID=19183
RebuilT! - L67 block, SS4 cam, M112 hybrid @ 3.0", home-ported heads, TOGs, TLC

(in reply to Submariner)
Post #: 19
RE: Pulley Size? - 2/1/2008 2:53:44 PM   
Submariner

 

Posts: 47
Joined: 1/28/2008
Status: offline

ZZP has a 3" downpipe with a magnaflow hi flow cat which is what I'm going to order. I plan on taking the Monte to my local Midas and have them replace the resonator with a section of exhaust pipe.

< Message edited by Submariner -- 2/1/2008 2:55:28 PM >

_____________________________

04 SS Intimidator #2643 of 4000.
Engine mods: ZZP 1.0 PCM, Wizaired CAI, Stainless Plog & 3" downpipe W/High Flow cat, Resonator removed, Autolite 104 Plugs, 180 drilled T-Stat
Misc mods: Lowered 1.3 Front 1.5 Rear, Tinted all around, Remote starter

(in reply to lav74)
Post #: 20
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