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Old Feb 16, 2007 | 04:41 PM
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Default Maggie #'s

what will a M112 Maggie do with a 2.9 inch pulley...plus the ECS snow kit on a Stock LS6 with long tubes,x-pipe,intake,highflow cats,corsa axle back,HD springs,Lingenfelter blower cam???

The rwhp and tq with a 3.0 pulley is 487/464!


checked the pulley it's a 3.0

Last edited by BoostedFRC; Feb 16, 2007 at 06:29 PM.
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Old Feb 16, 2007 | 05:33 PM
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I don`t have an exact comparision since I have an LS1 C5 but I am running almost exactly the same bolt on`s/cam, etc.
Before numbers w/ stock LS1 TB and maf, 3.1 pully: 444rwhp 434rwtq
added the following up-grades:
100mm LPE maf, Maggie LS2 air bridge, 90mm maggie snout w/90mm ported A&A/GM TB, 2.9 pully.
490rwhp = +46hp
486rwtq = +52tq
Change to a 2.9 pully alone should be around +25-30rwhp on your LS6
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Old Feb 16, 2007 | 05:56 PM
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R.P.
How does the 100mm MAF drive?? Any issues? Does it drive like the stock MAF??
Originally Posted by R.P.
I don`t have an exact comparision since I have an LS1 C5 but I am running almost exactly the same bolt on`s/cam, etc.
Before numbers w/ stock LS1 TB and maf, 3.1 pully: 444rwhp 434rwtq
added the following up-grades:
100mm LPE maf, Maggie LS2 air bridge, 90mm maggie snout w/90mm ported A&A/GM TB, 2.9 pully.
490rwhp = +46hp
486rwtq = +52tq
Change to a 2.9 pully alone should be around +25-30rwhp on your LS6
Reply
Old Feb 16, 2007 | 06:31 PM
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any belt slip issues with a 2.9 pulley??
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Old Feb 16, 2007 | 07:44 PM
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lower curve is ls1 with about the same mods and 2.9, the higher curve is adding ECS overdrive crank.



More Than Zero
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Old Feb 16, 2007 | 09:38 PM
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American HP, no driving impression yet, the car is still at A&A due to my requested last minute header and exhaust upgrades (switching from QTP tri-y headers/RT cats to American Racing/cat system.)
A&A didn`t mention any issues with the dyno/road testing, just that "she runs pretty dam stout for a maggie!"

BoostedFRC, the 2.9 pully is a Reichardt Racing (not sure if I spelled that right) cross-grooved pully, same type as the 3.1 I ran previously, these pullies grip very well so I don`t expect any slipping issues with the 2.9
A&A did not mention any slipping issues on the dyno or the road tests.

I`m scheduled to pick the car up next Wed and have a run the following Sat, so I`ll have a first hand opinion in a couple of weeks.

Rag-Top Rick
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Old Feb 17, 2007 | 11:57 AM
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Originally Posted by R.P.
American HP, no driving impression yet, the car is still at A&A due to my requested last minute header and exhaust upgrades (switching from QTP tri-y headers/RT cats to American Racing/cat system.)
A&A didn`t mention any issues with the dyno/road testing, just that "she runs pretty dam stout for a maggie!"

BoostedFRC, the 2.9 pully is a Reichardt Racing (not sure if I spelled that right) cross-grooved pully, same type as the 3.1 I ran previously, these pullies grip very well so I don`t expect any slipping issues with the 2.9
A&A did not mention any slipping issues on the dyno or the road tests.

I`m scheduled to pick the car up next Wed and have a run the following Sat, so I`ll have a first hand opinion in a couple of weeks.

Rag-Top Rick
did you have to change the belt when you went to a 3.0 to a 2.9???
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Old Feb 17, 2007 | 02:06 PM
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Originally Posted by BoostedFRC
did you have to change the belt when you went to a 3.0 to a 2.9???
Not sure, I`ll ask when I pick the car up on Wed!
Just to clarify, went from a 3.1 to 2.9
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Old Feb 17, 2007 | 02:53 PM
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Originally Posted by BoostedFRC
did you have to change the belt when you went to a 3.0 to a 2.9???
Nope.

We usually will break the 500 rwhp mark with those mods relitively easily, your timing might be very low. (just a guess)


btw, from your original post, Snow's alky kit has plastic lines and is not compatable with 100% meth, far different from the one we sell.
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Old Feb 17, 2007 | 09:21 PM
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Originally Posted by R.P.
I don`t have an exact comparision since I have an LS1 C5 but I am running almost exactly the same bolt on`s/cam, etc.
Before numbers w/ stock LS1 TB and maf, 3.1 pully: 444rwhp 434rwtq
added the following up-grades:
100mm LPE maf, Maggie LS2 air bridge, 90mm maggie snout w/90mm ported A&A/GM TB, 2.9 pully.
490rwhp = +46hp
486rwtq = +52tq
Change to a 2.9 pully alone should be around +25-30rwhp on your LS6
That is my next mod 100mm maf and LS2 air bridge with a 2.5 pulley.
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Old Feb 18, 2007 | 11:40 AM
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Anyone know what the max rpm that you can run the maggie at? OR, has anyone actually damaged there maggie yet with over revving?
Of course from what I have read, the only draw back spinning the maggie up higher is it becomes more and more less effecient in compressing air, and will just heat the air up more and more.
Any word on the cost of a MP122 conversion?
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Old Feb 18, 2007 | 04:07 PM
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What was done to allow the 100mm LPE maf to function with your 98 vette's computer. From everything I read the 98's computer is electronically less advance than the later years. The MAF table on the later years has a wider frequency range.

Originally Posted by R.P.
I don`t have an exact comparision since I have an LS1 C5 but I am running almost exactly the same bolt on`s/cam, etc.
Before numbers w/ stock LS1 TB and maf, 3.1 pully: 444rwhp 434rwtq
added the following up-grades:
100mm LPE maf, Maggie LS2 air bridge, 90mm maggie snout w/90mm ported A&A/GM TB, 2.9 pully.
490rwhp = +46hp
486rwtq = +52tq
Change to a 2.9 pully alone should be around +25-30rwhp on your LS6
Reply
Old Feb 18, 2007 | 06:23 PM
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Originally Posted by TriniJoe
What was done to allow the 100mm LPE maf to function with your 98 vette's computer. From everything I read the 98's computer is electronically less advance than the later years. The MAF table on the later years has a wider frequency range.
Since the car was tuned by A&A/Charlie I`m not sure what extra measures if any were required to tune the 100mm maf on my 98.
I know LPE has a "base calibration" that can be down-loaded and then fine-tuned from there but I don`t know if A&A used the LPE or their own data. A&A didn`t mention the car was a bitch to tune so I suggest calling them and LPE for more info.

I can tell you that if you are using a Vararam you will need to trim/shorten the ends of the LS2 air-bridge to fit the 100mm maf and 90mm tb/Maggie snout conversion.
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Old Feb 18, 2007 | 06:49 PM
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Originally Posted by FunCool
That is my next mod 100mm maf and LS2 air bridge with a 2.5 pulley.
What kind of numbers would you see with a 2.5 pulley vs the 3.0 or 2.9?
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Old Feb 18, 2007 | 07:05 PM
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Originally Posted by LKGRenegade22
What kind of numbers would you see with a 2.5 pulley vs the 3.0 or 2.9?
The h/p gain is marginal, but the t/p will be huge! Every time I change a pulley the seat of pants is amazing. This way when I but a 3.73 gear in the car on a role I will smash all my friends with AUTOMATICS!!
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