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Old 05-06-2010, 09:28 PM   #1
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who has the 3.6 pulley on their maggie?

I am putting the kooks headers on my ls3 and looking to find out hownmany others have switched out the pulley....anybody have any problems? Good gains? Thanks!
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Old 05-06-2010, 11:02 PM   #2
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Most of the camaro kitts we sale have the 3.6 pully and every one seems to be happy.
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Old 05-06-2010, 11:14 PM   #3
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I am running a 3.4 9.5psi boost with no problems
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Old 05-06-2010, 11:21 PM   #4
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I am running a 3.6 pulley and have no problems either... Go for it...
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Old 05-07-2010, 01:37 AM   #5
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I am running a 3.4 9.5psi boost with no problems
Same here.

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Old 05-07-2010, 05:51 AM   #6
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I am running a 3.6 pulley and have no problems either... Go for it...

I noticd that you are also running a boost-a-pump.......were you runnning out of fuel or is this for another reason?
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Old 05-07-2010, 07:43 AM   #7
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a friends car has the kooks long tubes, rotofab cai, and a 3.6 pulley,, 52# injectors were at 100% duty cycle by 6000rpm, swapped out injectors for a set of 72#/hr and duty cycle is much better
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Old 05-07-2010, 08:07 AM   #8
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arent the stock injectors with the maggie 60#? Im not exactly sure what you mean by duty cycle. Im trying to figure out if i am going to need to do anything other than installing the headers / pulley and get a new tune?
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Old 05-07-2010, 08:28 AM   #9
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I have 3.6 on My L99 with ARH Headers Kats and a tune and started running lean at 6400RPM

I had to set rev limmiter at 6400.

My LS3 I couldn't put a 3.6 on it because I ran out of fuel at 5800RPM. Can't have that.

I just swapped fuel systems yesterday and put in an ADM control Module and pump set up and switched to a 3.6 as well as a Innovators west 10% overdrive Crank Pulley.

I Haven't been to the dyno for a re tune yet so we will see if the fuel system holds up.

I live where it gets cold in Fall and spring ( Don't drive it in winter) and I need to keep the a/f ratio in the 11's or I risk serious lean out conditions and we all know what happens than!

I kept the 3.6 on the L99 Just had to set limmiter down but still runs a little lean for my comfort. As soonas I figure out which way to go on fuel systems I will upgrade it as well along with adding the 10% overdrive crank pulley.

I have watched too many guys have belt slip with a 3.4 Time and time again That is why I went with the crank overdrive pulley. I know another guy running same set up and he is right at 10 LBs of boost. Boost a pumps have been failing. Check it out all the Big guys are either using Fastlane pumps or ADM set ups.

LPE is using ADM so Is Jannetty Now They have a ctsv Module and pumps so the system is set up for deul pumps . I have heard nothing bad about either but before upping the boost Make sure you keep an eye on A/F ratio. Depending on where you live or plan on driving you will risk lean out conditions with a stock pump if....You go lower than a 3.8 and have headers and exhaust. The more air you flow the more fuel you need. Some are tuning way too lean !

Here are my two Dyno's One L99 with 3.6 Base line 3.8 I am just border line with arh headers and Corsa exhaust. Lookat A/F ratio at bottom.L99 was running way lean on canned tune but I added headers and exhaust after canned tune that is why first pull was really lean.

Name:  dyno2.jpg
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Here is LS3 with 3.8 Couldn't go with 3.6 would have been out of fuel at 5,800.I have since upgraded fuel system and 3.6 pulley and 10% overdrive crank pulley. Dyno and tune the 18th will post results after the tune.

LS3 w/3.8 Kooks headers and Kats, Corsa exhaust.

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You can see it was running lean on Canned tune at end of RPM range. We fattened everything up and gained a little torque but Hp stayed almost the same. With More Boost and fuel torque should go through the roof on next tune.
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Old 05-07-2010, 08:41 AM   #10
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FYI. Injectors are big enough if you have fuel pressure.... They should be 60# at least that is what came with My Kits. They are LS9 or ZR1 injectors. Some after market injectors may work better but only because of the spray patter not because of them being bigger.

At least This is what I have been told by those in the know. Don't shoot the messenger and sorry if I am wrong on any of this. It is only what I have found out while trying to solve my A/F ratio issues in the quest for more SAFE POWER !
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Old 05-07-2010, 08:46 AM   #11
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so.....should I just put on the headers and get a tune and call it done......I really dont feel like changing the fuel system......? i think i just want to settle for the hp that the headers will free up and be ok with less boost and a better flowing /efficient motor. How does that sound?
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Old 05-07-2010, 08:46 AM   #12
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The way I understand it is - at about 500-550 rwhp you should look at adding more fuel. If I go any further with it, I will probably swap out the Boost-A-Pump with the ADM High Output Fuel System. I was also considering a meth injection kit, but when talking to someone about it, they convinced me it was not a good idea.

Oh, my 3.6 pulley is giving me 7.5psi of boost. I am thinking of changing to a 3.4 - I would like to get as close to 600rwhp as I can. The new pulley alone should be good for about 20rwhp. The weak link is the auto transmission. There really isn't many upgrade options out there right now for the trans, so I think I will sit back and wait a while and enjoy what I have. Believe me, I'm not complaining... But you know, you always want More - More - More...
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Old 05-07-2010, 08:50 AM   #13
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The way I understand it is - at about 500-550 rwhp you should look at adding more fuel. If I go any further with it, I will probably swap out the Boost-A-Pump with the ADM High Output Fuel System. I was also considering a meth injection kit, but when talking to someone about it, they convinced me it was not a good idea.

Oh, my 3.6 pulley is giving me 7.5psi of boost. I am thinking of changing to a 3.4 - I would like to get as close to 600rwhp as I can. The new pulley alone should be good for about 20rwhp. The weak link is the auto transmission. There really isn't many upgrade options out there right now for the trans, so I think I will sit back and wait a while and enjoy what I have. Believe me, I'm not complaining... But you know, you always want More - More - More...
Im ok with 550 rwhp or under as long as its safe and reliable. At that point im still looking at the max for the clutch....the stock fuel system etc. How are lingenfelter and slp getting 550 rwhp out of their cars without the boost a pump ?
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Old 05-07-2010, 08:57 AM   #14
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with a new cam - I think???
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Old 05-07-2010, 08:58 AM   #15
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Does the Camaro 2300 kit come with 1:1 pulleys in the rear or are they under driven like the G8 kits?
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Old 05-07-2010, 09:12 AM   #16
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i am so confused.....argh
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Old 05-07-2010, 09:20 AM   #17
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so.....should I just put on the headers and get a tune and call it done......I really dont feel like changing the fuel system......? i think i just want to settle for the hp that the headers will free up and be ok with less boost and a better flowing /efficient motor. How does that sound?
If it were me I would do the headers cats and exhaust. I would take a 3.6 pulley with me when I did my tune. If your AFR are exceptable put the 3.6 on it. They are only 50-60 bucks. If you can get away with putting it on which your tuner will tell you than put it on while its there. Same belt size no sweat. It will save you a retune later and if you don't need it there are plenty of guys out there that will take it off your hands for a minumal loss.
As a matter of fact I know a guy right now that would take it off your hands.

He is going to do what I just suggested to you. Boost a pumps are not working They are failing and wouldnt give you what you need to go bigger anyway. I would just leave it at what you can SAFELY Get out of your factory pump. By the way... you will loose a pound or two of boost with the headers which is not a bad thing. You will still increase HP without adding cylinder pressure.

550RWHP will be at the very top end of what you can get with a maggie and stock pump.( on LS3) I have seen more but most have either added cams or other mods or are running meth to compensate for lack of fuel. Or just running way too lean for my tastes( To each his own)

As my Dyno showed I was running out on my LS3 at 527HP with Lt. Cats,and exhaust. It will vary by temp humidity, altitude , dyno, but 550 will be on the hi end with out meth or more fuel.
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Old 05-07-2010, 09:50 AM   #18
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When they about the duty cycle, if they say the duty cycle is at 100%, that means your injector is maxed out and will not flow any more fuel other than what it is at. At this point , you can do two things to correct this 1-raise the fuel pressure to compensate 2- put a bigger set of injectors in. But just remember, if you do one or the other you better make sure the fuel delivery system can keep up. I work alot with the after market EFI systems like F.A.S.T. and Big stuff 3 . when I do a tuneup on a motor I dont try to let the duty cycle get past 90% , because now the tuning window is limited and also if the injector is maxed and its runs into a lean condition it has no extra fuel for correction.

Hopefully this helps
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Old 05-07-2010, 10:32 AM   #19
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When they about the duty cycle, if they say the duty cycle is at 100%, that means your injector is maxed out and will not flow any more fuel other than what it is at. At this point , you can do two things to correct this 1-raise the fuel pressure to compensate 2- put a bigger set of injectors in. But just remember, if you do one or the other you better make sure the fuel delivery system can keep up. I work alot with the after market EFI systems like F.A.S.T. and Big stuff 3 . when I do a tuneup on a motor I dont try to let the duty cycle get past 90% , because now the tuning window is limited and also if the injector is maxed and its runs into a lean condition it has no extra fuel for correction.

Hopefully this helps
Craig,

I've got the "60 lb" injectors that came with the TVS2300 and I have twin 342 Walbros intank. I logged a run this morning and right when my car was hitting redline (6600 rpms) my injector duty cycle was 90%. If I go down a couple of pulley sizes will my injectors stay close to 90% or will it push them over the edge? I've got plenty of fuel volume and pressure potential but I'm running the stock -6 line from the regulator to the fuel rail.

Thank you.
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Old 05-07-2010, 10:43 AM   #20
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i am so confused.....argh
Call me I will UNCONFUSE you.

Our Street Brawler Package uses a 3.6 pulley and fuel Pressure starts to fade a little bit at the very top but we have NO Problems with enough fuel 11.6 all the way to 6800.

The MSD Fuel Pump Voltage Booster is good insurance and easy to install, I have written a wiring schematic I include with each one I sell.

Your tune will need to be adjusted for the headers, with the headers you will lose 1 psi boost and with the pulley you will gain it back plus 1 so it is very safe.

Just finished a Street Brawler Package yesterday with a cam and few other goodies, I will be posting later with dyno sheet and video.

Ted.
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Old 05-07-2010, 10:58 AM   #21
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Craig,

I've got the "60 lb" injectors that came with the TVS2300 and I have twin 342 Walbros intank. I logged a run this morning and right when my car was hitting redline (6600 rpms) my injector duty cycle was 90%. If I go down a couple of pulley sizes will my injectors stay close to 90% or will it push them over the edge? I've got plenty of fuel volume and pressure potential but I'm running the stock -6 line from the regulator to the fuel rail.

Thank you.
When you say if you go down a couple sizes ,I have no idea how much boost that adds or the horsepower level gain you get, so its hard for me to answer that. At this point you should be alright with the 6 line ,but what we do is we monitor the fuel pressure with a electronic fuel pressure sensor that gets logged with all of our sensors, this way if the pressure drops at all during a pass we can tell its in the fuel delivery or if the injectors are to small or if we need to increase fuel pressure . For example. our base pressure is 75lbs and with every lb. of boost it will add 1 lb of fuel pressure , so if we are making 32lbs of boost going down the track we will have 107lbs of fuel pressure. We are using 16- 550lbhr Moran injectors. There at about 75% duty cycle.
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Old 05-07-2010, 11:18 AM   #22
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Sorry for being so vague.

Currently I'm at 6.5 lbs of boost and I would estimate my power to be around 500 rwhp maybe a hair below that. I haven't had it dyno'd yet so I don't know for sure. My commanded AFR is 11.4 at WOT and I'm within 3% (on the rich side) throughout a long third gear pull.

I'm currently running a 3.7" pulley with 1:1 ratio in the rear pulleys. I'm considering going down to a 3.4" or 3.5" pulley. A salesman at Magnuson claimed that each tenth of an inch reduction in pulley size is equal to a half a pound of boost. Based on that statement I would be around 8-8.5 lbs of boost.

I have an adjustable regulator set at 58 psi of line pressure. The regulator is in the trunk. I've hooked a pressure gauge up to the rail and it's got 58 psi at WOT at the rail too.

Thanks for any input and/or advice. I'm trying to learn all I can.
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Old 05-07-2010, 11:25 AM   #23
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arent the stock injectors with the maggie 60#? Im not exactly sure what you mean by duty cycle. Im trying to figure out if i am going to need to do anything other than installing the headers / pulley and get a new tune?

maybe some are shipped with different injectors,, this one had 52#@58psi gm ls9 injectors.( i even checked the part number of the injectors Bosch 0 280 158 187 )
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Old 05-07-2010, 11:34 AM   #24
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maybe some are shipped with different injectors,, this one had 52#@58psi gm ls9 injectors.( i even checked the part number of the injectors Bosch 0 280 158 187 )
That's what they are calling "60 lbs" injectors.
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Old 05-07-2010, 02:13 PM   #25
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Quote:
Originally Posted by JANNETTYRACING View Post
Call me I will UNCONFUSE you.

Our Street Brawler Package uses a 3.6 pulley and fuel Pressure starts to fade a little bit at the very top but we have NO Problems with enough fuel 11.6 all the way to 6800.

The MSD Fuel Pump Voltage Booster is good insurance and easy to install, I have written a wiring schematic I include with each one I sell.

Your tune will need to be adjusted for the headers, with the headers you will lose 1 psi boost and with the pulley you will gain it back plus 1 so it is very safe.

Just finished a Street Brawler Package yesterday with a cam and few other goodies, I will be posting later with dyno sheet and video.

Ted.

Ted,

I will call you
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