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Old 04-24-2010, 12:41 PM   #1
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Quick question on tvs pulleys

Stock diameter crank what psi would be seen on a stock ls3 with a 3.2" pulley and a 3.4" pulley. I can't seem to find that chart anywhere that gave that info out. I know i've seen it in the past.
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Old 04-24-2010, 01:11 PM   #2
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I think the 3.4 will be around 10psi and the 3.2 12psi but not 100 percent. Just what i remember.
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Old 04-24-2010, 01:13 PM   #3
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anyone able to verify this?
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Old 04-24-2010, 01:31 PM   #4
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The reason i say this is because i ordered the 3.6 and it is the 8psi pulley and i think the smaller you go it goes up 2psi.
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Old 04-24-2010, 01:52 PM   #5
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The boost will differ a little from car to car. I have the 3.6 and I pull 7.5 lbs. on the street. The 2 lbs. per pulley size sounds about right.
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Old 04-24-2010, 03:01 PM   #6
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This should answer all your questions.
The stock boost for any Magnacharger TVS 2300 Supercharger Kit installed upon any 2010 Camaro 6.2L V8 with a 3.80" Magnacharger Pulley installed on it is only 6 psi at wide open throttle.

PLEASE NOTE: If running Long-Tube Headers, you will loose 2 PSI of Boost and to gain that back, choose a pulley 2 sizes smaller!

- 3.60" pulley: expect 2.0 psi. more boost over stock pulley -Total boost 8.0 psi
- 3.40" pulley: expect 4.0 psi. more boost over stock pulley -Total boost 10.0 psi
- 3.20" pulley: expect 6.0 psi. more boost over stock pulley -Total boost 12.0 psi
- 3.10" pulley: expect 7.0 psi. more boost over stock pulley -Total boost 13.0 psi
- 3.00" pulley: expect 8.0 psi. more boost over stock pulley -Total boost 14.0 psi
- 2.90" pulley: expect 9.0 psi. more boost over stock pulley -Total boost 15.0 psi
- 2.80" pulley: expect 10.0 psi. more boost over stock pulley -Total boost 16.0 psi
- 2.70" pulley: expect 11.0 psi. more boost over stock pulley -Total boost 17.0 psi

WARNING: The only way to install the 2.70" Pulley is to have the Jackshaft Housing machined down for it to fit properly. Some Jackshaft Housing Castings are made differently in sizes and do vary, as to what the smallest pulley you can use without maching. The smallest size we recommend is 2.80", without any machining performed on the jackshaft housing casting area.
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Old 04-24-2010, 10:59 PM   #7
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if you lose 2 psi of boost with long tube headers why would you drop two sizes in pulleys if the next size down gives you 2 psi so in my case i have the 3.8 stock pulley with longtubes i would use the 3.6 to get the 2psi back right or am i missing something
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Old 04-24-2010, 11:01 PM   #8
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Exactly.
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Old 04-25-2010, 04:54 AM   #9
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just because you are loosing psi doesn't mean your not making more power than prior... Psi on roots blowers is not really a good thing.
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Old 04-25-2010, 04:55 AM   #10
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But thank you for the information, that is what i was looking for.
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Old 04-25-2010, 09:21 PM   #11
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On my LS3 we are installing a maggie with 1 7/8" AR headers with high flow cats and the 3.6 pulley, so I guess I should expect around 6 psi and 550 rwhp...? I'm keeping the stock internals and will be installing a meth kit, could I go with a 3.4 pulley?
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Old 04-26-2010, 10:45 PM   #12
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Quote:
Originally Posted by jrpxxii View Post
This should answer all your questions.
The stock boost for any Magnacharger TVS 2300 Supercharger Kit installed upon any 2010 Camaro 6.2L V8 with a 3.80" Magnacharger Pulley installed on it is only 6 psi at wide open throttle.

PLEASE NOTE: If running Long-Tube Headers, you will loose 2 PSI of Boost and to gain that back, choose a pulley 2 sizes smaller!

- 3.60" pulley: expect 2.0 psi. more boost over stock pulley -Total boost 8.0 psi
- 3.40" pulley: expect 4.0 psi. more boost over stock pulley -Total boost 10.0 psi
- 3.20" pulley: expect 6.0 psi. more boost over stock pulley -Total boost 12.0 psi
- 3.10" pulley: expect 7.0 psi. more boost over stock pulley -Total boost 13.0 psi
- 3.00" pulley: expect 8.0 psi. more boost over stock pulley -Total boost 14.0 psi
- 2.90" pulley: expect 9.0 psi. more boost over stock pulley -Total boost 15.0 psi
- 2.80" pulley: expect 10.0 psi. more boost over stock pulley -Total boost 16.0 psi
- 2.70" pulley: expect 11.0 psi. more boost over stock pulley -Total boost 17.0 psi

WARNING: The only way to install the 2.70" Pulley is to have the Jackshaft Housing machined down for it to fit properly. Some Jackshaft Housing Castings are made differently in sizes and do vary, as to what the smallest pulley you can use without maching. The smallest size we recommend is 2.80", without any machining performed on the jackshaft housing casting area.
No doubt these figures come from South Florida Pulley Headquarters at this link for additional help:
http://www.southfloridapulleyhq.com/...le_pulleys.htm
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Old 04-27-2010, 07:57 PM   #13
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Originally Posted by Carlos Garza View Post
On my LS3 we are installing a maggie with 1 7/8" AR headers with high flow cats and the 3.6 pulley, so I guess I should expect around 6 psi and 550 rwhp...? I'm keeping the stock internals and will be installing a meth kit, could I go with a 3.4 pulley?
This all depends on alot of variables. I have an LS3 and an L99 car Both with TVS 2300's Long Tubes and Flo though Cats as well as Corsa exhaust.

I did tunes and baselines on Both. I tried adding a 3.6 pulley on my LS3 but I ran out of Fuel at 5800 RPM. A Fuel pump upgrade is needed to get the benefit from the added boost. A lean out condition at 5800 RPM made the tune extremely unsafe. I had to go back to the 3.8 until I can get my Fuel system upgraded which I am working on Now. My L99 had no problem with the 3.6 pulley upgrade and started to lean out at 6400 RPM. It would still bennefit from more fuel for higher RPM usage and better shift point calibration but since it is my wifes car I chose to leave it alone. Runs awesome compared to pre tune and boost upgrade.

Here are my Pulls .....

Keep in Mind L99 has 3.6 Pulley LS3 Still Has 3.8 until I get more fuel

L99
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LS3
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Old 04-27-2010, 08:57 PM   #14
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Thanks for the info CARGUY; I forgot to mention I'm also installing a kenne bell boost a pump and a meth kit. Hopefully, the KB BAP will help me run the 3.6 pulley without running out of fuel.
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Old 04-27-2010, 09:45 PM   #15
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Originally Posted by Carlos Garza View Post
Thanks for the info CARGUY; I forgot to mention I'm also installing a kenne bell boost a pump and a meth kit. Hopefully, the KB BAP will help me run the 3.6 pulley without running out of fuel.
Don't shoot the messenger but I have been told that the BAP's are having issues with computers changing voltage continuosly and not giving a constant fuel pressure. I wish it was that easy or I would be all over it. I am
searching hi and low for Fuel pump options and I have found no one to that will recomend the BAP in the camaro as a very good option especially with the type levels of fuel you will be requireing.

Most have either adeded a secondary fuel pump in the fuel system some where which will require tapping into your fuel lines some where and bypassing your ecm or have added a dual pump system like fastlanes Deuce pump. I have had one of those on order for over a month now and they are in the middle of an upgrade and haven't given me any indication as to when those will be shipping. Last update I got was in three weeks ( That was two days ago) I have emailed them for an update but have heard nothing as of yet, Most are waiting for parts from GM because all their parts are GM components and the two pumps are staged and are a drop in replacement.

I have heard positive comments about their system except by one other manufacturer. I have heard they are reliable to 800HP

Just can't gert my hands on one.

Ordered an ADM dual pump system today which they claim are even more reliable than Fastlanes but If I sold tham I would too....they cost alot more too...Not sure of what the actual difference is but will find out soon. I have a scheduled Dyno tune the 18th with upgraded fuel sysytem 10% overdrive crank pulley and 3.6 maggie pulley. Should be an even 10lbs of boost with a safe tune on 93 octane. Just need the pump so I can get it all put together before the 18th.

I would however be very careful with The BAP in your situation. With the kind of Boost and fuel requirements you are going to need on a safe tune I would highly recomend you do some serious research on the fuel system side of things or you will be almost surely risking a quick melt down at high rpm's even for a short burst.

Again...Don't shoot the messenger, and its your car, but fuel delivery is a very important part of the equation and I think the money you spend on Pulleys Tunes etc will all be wasted if you don't get the fuel you need. It is very well documented that these cars run out of fuel quickly after the 500 to 525 horse range unless you run them very lean. I know in my neck of the woods where we get some very cool days and nights In spring and fall we need all the fuel we can get for that dense air charge.

Good luck with BAP but I think I would do a little more research with the kind of numbers you are looking for or you will most likely have an early and ugly meltdown and I would hate to see that happen to anyone.JMHO

Fair warning...not an expert by any means but I have researched it long and hard since I suffer from fuel deprovation!

I was told just today that LPE has switched to ADM's dual pump set up in there higher HP applications. Only hear say but from a reliable source.

Keep me posted on you results and I will do the same. I will be posting my dyno sheets as soonas I get my darn fuel pump from somewhere. Actually have three ordered right now but all are waoiting on GM components except ADM and even they are I had to get mine from one of their supliers who bought a bunch of them.
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Old 04-27-2010, 09:52 PM   #16
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This car has a 3.1" pulley, ported heads, 224/239 cam with .629 lift, 2" primery Kooks headers, 3" Exhaust, Rotofab intake, Ported TB.

Makes 9psi of boost





2.9" will be going on soon in the quest for 750 rwhp
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Old 04-28-2010, 07:18 PM   #17
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Don't shoot the messenger but I have been told that the BAP's are having issues with computers changing voltage continuosly and not giving a constant fuel pressure. I wish it was that easy or I would be all over it. I am
searching hi and low for Fuel pump options and I have found no one to that will recomend the BAP in the camaro as a very good option especially with the type levels of fuel you will be requireing.

Most have either adeded a secondary fuel pump in the fuel system some where which will require tapping into your fuel lines some where and bypassing your ecm or have added a dual pump system like fastlanes Deuce pump. I have had one of those on order for over a month now and they are in the middle of an upgrade and haven't given me any indication as to when those will be shipping. Last update I got was in three weeks ( That was two days ago) I have emailed them for an update but have heard nothing as of yet, Most are waiting for parts from GM because all their parts are GM components and the two pumps are staged and are a drop in replacement.

I have heard positive comments about their system except by one other manufacturer. I have heard they are reliable to 800HP

Just can't gert my hands on one.

Ordered an ADM dual pump system today which they claim are even more reliable than Fastlanes but If I sold tham I would too....they cost alot more too...Not sure of what the actual difference is but will find out soon. I have a scheduled Dyno tune the 18th with upgraded fuel sysytem 10% overdrive crank pulley and 3.6 maggie pulley. Should be an even 10lbs of boost with a safe tune on 93 octane. Just need the pump so I can get it all put together before the 18th.

I would however be very careful with The BAP in your situation. With the kind of Boost and fuel requirements you are going to need on a safe tune I would highly recomend you do some serious research on the fuel system side of things or you will be almost surely risking a quick melt down at high rpm's even for a short burst.

Again...Don't shoot the messenger, and its your car, but fuel delivery is a very important part of the equation and I think the money you spend on Pulleys Tunes etc will all be wasted if you don't get the fuel you need. It is very well documented that these cars run out of fuel quickly after the 500 to 525 horse range unless you run them very lean. I know in my neck of the woods where we get some very cool days and nights In spring and fall we need all the fuel we can get for that dense air charge.

Good luck with BAP but I think I would do a little more research with the kind of numbers you are looking for or you will most likely have an early and ugly meltdown and I would hate to see that happen to anyone.JMHO

Fair warning...not an expert by any means but I have researched it long and hard since I suffer from fuel deprovation!

I was told just today that LPE has switched to ADM's dual pump set up in there higher HP applications. Only hear say but from a reliable source.

Keep me posted on you results and I will do the same. I will be posting my dyno sheets as soonas I get my darn fuel pump from somewhere. Actually have three ordered right now but all are waoiting on GM components except ADM and even they are I had to get mine from one of their supliers who bought a bunch of them.
I may go ahead and change the BAP and install a dual pump system down the road. I'm also installing a meth kit, so hopefully that will help. Thanks for the great advice.
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Old 04-28-2010, 08:40 PM   #18
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carguy,
did your l99 use the stock airbox or do you have a cold air intake installed
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Old 04-29-2010, 09:52 AM   #19
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carguy,
did your l99 use the stock airbox or do you have a cold air intake installed
I am using a Hennesy CAI on Both cars....

That was about all that was available when I put the Maggies on. I got both cars from the dealer with Maggies installed. LS3 was an early order car with a Vin in the 4800 Range. At that point I was grabbing all I could find for the car in the way of Parts but was happy with the out come. I only changed Headers and cats to ARH on L99 Everything else was originally the same.

Now I have 3.6 pulley on it.

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Old 04-29-2010, 10:04 AM   #20
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I may go ahead and change the BAP and install a dual pump system down the road. I'm also installing a meth kit, so hopefully that will help. Thanks for the great advice.
I have read several posts on different forums and if memory serves me right the BAP will work for a while if installed downstream of the pump module or computer but than begins blowing fuses. If it is installed before the BAP doesn't like the modulating voltages that the fuel moduel sends and plays havoc with the BAP. I will try and find those posts a copy them to this page.

Hope it all works out for you...You may be right on the meth injection I have no experience or knowlege on the effects of that and would be interested in hearing how you come out. I think BAP will work for a while down stream but have heard several guys say they eventually start blowing fuses.

I have a ADM Dual pump Kit on its way be here tomorrow begin install on Monday so I will see what happens with it. Its getting good reviews so far....Time will tell. I think I will wait on the L99 until I get some solid first hand experience. Not a cheap upgrade between the pumps and time to install but will be worth it as it paves the way for future upgrades and keeps me from worrying about dangerous lean out conditions.

As soon as I get the pump and pulleys installed and get to my tune on the 18th I will post the dyno results so others can determine if the investment is worth while.
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