Generation III Internal Engine 1997-2006 LS1 | LS6
Sponsored by:
Sponsored by:

MMS 229 v2.1 is in

Thread Tools
 
Search this Thread
 
Old Mar 16, 2002 | 08:18 PM
  #1  
Fireball's Avatar
Thread Starter
TECH Senior Member
20 Year Member
iTrader: (21)
 
Joined: Nov 2001
Posts: 8,484
Likes: 0
From: Cecil County Raceway!!!
Default MMS 229 v2.1 is in

well haven't really "tested" it yet but so far so good. Found idle immediately with the factory 800 rpm idle speed. No surging or anything whatsoever. Its definatley choppy but nothing that I'd consider severe haha. Might lower the idle speed some just to see what I can do for idling <img border="0" alt="[chug]" title="" src="graemlins/gr_chug.gif" />

There is a definate loss in torque below 3500 rpm but in the low gears that is counteracted with my mechanical torque (BIG GEARS)

LS1edit is due to arrive tuesday sometime, I'll spend some time wednesday playing with it some <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

I'll keep you all informed on track times (hope to go next weekend <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> )
Reply
Old Mar 16, 2002 | 09:15 PM
  #2  
Raughammer's Avatar
D(irecto)r Pepper
 
Joined: Nov 2001
Posts: 1,952
Likes: 0
From: Houston Raceway Park...in TEXAS.
Default Re: MMS 229 v2.1 is in

Killer... now after the edit... GO TO THE TRACK! <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

Keep us informed bud.
Reply
Old Mar 16, 2002 | 09:29 PM
  #3  
VINCE's Avatar
Shorty Director
20 Year Member
iTrader: (1)
 
Joined: Nov 2001
Posts: 8,259
Likes: 4
From: Valrico, Florida
Default Re: MMS 229 v2.1 is in

You guys are going all out.. This is going to be a crazy year..
Reply
Old Mar 17, 2002 | 09:39 AM
  #4  
Ragtop 99's Avatar
TECH Senior Member
iTrader: (7)
 
Joined: Nov 2001
Posts: 9,491
Likes: 1
From: Bethesda, MD
Default Re: MMS 229 v2.1 is in

Have you done some ATAP runs to see how far off you are?

Is the idle significantly worse than you B1 or just a bit rougher?
Reply
Old Mar 17, 2002 | 09:45 AM
  #5  
Fireball's Avatar
Thread Starter
TECH Senior Member
20 Year Member
iTrader: (21)
 
Joined: Nov 2001
Posts: 8,484
Likes: 0
From: Cecil County Raceway!!!
Default Re: MMS 229 v2.1 is in

Its not that I don't think its far off, its that I don't have the limiter for this cam yet. I'm still stuck at 6600 rpm from HPP3. This cam don't really peak until 6800.

As for idle...its quite a bit choppier than the B1 but its definately not as choppy as Scotts (V2.0)
Reply
Old Mar 17, 2002 | 10:09 AM
  #6  
ONYXSS's Avatar
TECH Enthusiast
 
Joined: Nov 2001
Posts: 699
Likes: 0
From: Maryland
Default Re: MMS 229 v2.1 is in

Brian, are you sure about that? Peaks at 6800??

That would have you shifting over 7000 <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />
Reply
Old Mar 17, 2002 | 10:46 AM
  #7  
Fireball's Avatar
Thread Starter
TECH Senior Member
20 Year Member
iTrader: (21)
 
Joined: Nov 2001
Posts: 8,484
Likes: 0
From: Cecil County Raceway!!!
Default Re: MMS 229 v2.1 is in

yeah...according to mike morgans dyno he posted for a cam only 229, it peaked about 6800.

I'm planning on 6800 shifts right now until my new motor is ready <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
Reply
Old Mar 17, 2002 | 10:56 AM
  #8  
TimZ28's Avatar
TECH Regular
 
Joined: Jan 2002
Posts: 414
Likes: 0
From: Orlando, FL
Default Re: MMS 229 v2.1 is in

What is the advertised duration and intake centerline?
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Mar 17, 2002 | 01:03 PM
  #9  
Fireball's Avatar
Thread Starter
TECH Senior Member
20 Year Member
iTrader: (21)
 
Joined: Nov 2001
Posts: 8,484
Likes: 0
From: Cecil County Raceway!!!
Default Re: MMS 229 v2.1 is in

bastard. haha...I'll get on that <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

until then I'll do what I do in HPP3....short tire + 4.56
Reply
Old Mar 17, 2002 | 01:07 PM
  #10  
Fireball's Avatar
Thread Starter
TECH Senior Member
20 Year Member
iTrader: (21)
 
Joined: Nov 2001
Posts: 8,484
Likes: 0
From: Cecil County Raceway!!!
Default Re: MMS 229 v2.1 is in

well...didn't have a vacuum gage handy before the swap so I went ahead and got the MAP and Barometric readings from Atap for the 229

vacuum: 30.2 (barometric) - 15.9 (MAP) = 14.3 inHg

IAC pintle: 79-81
idle speed: 773-832 rpm
Reply
Old Mar 17, 2002 | 05:09 PM
  #11  
TimZ28's Avatar
TECH Regular
 
Joined: Jan 2002
Posts: 414
Likes: 0
From: Orlando, FL
Default Re: MMS 229 v2.1 is in

I can see that cam holding to the high 6k range but I don't see you peaking at 6800 with a cam only setup. Would love to see some dyno graphs when you get it all worked out.

Tim
Reply
Old Mar 17, 2002 | 05:15 PM
  #12  
Jason99T/A's Avatar
I can shift faster than you.
iTrader: (21)
 
Joined: Nov 2001
Posts: 5,133
Likes: 0
From: Baton Rouge, LA
Default Re: MMS 229 v2.1 is in

Fireball, I would be curious to see your dyno results. What valvesprings are you using? Let us know when you get some track times. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
Reply
Old Mar 17, 2002 | 05:25 PM
  #13  
Fireball's Avatar
Thread Starter
TECH Senior Member
20 Year Member
iTrader: (21)
 
Joined: Nov 2001
Posts: 8,484
Likes: 0
From: Cecil County Raceway!!!
Default Re: MMS 229 v2.1 is in

running isky double springs (MTI double spring package)
Reply
Old Mar 17, 2002 | 07:01 PM
  #14  
LS1derfull's Avatar
TECH Addict
 
Joined: Dec 2001
Posts: 2,298
Likes: 2
From: new england
Default Re: MMS 229 v2.1 is in

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by TimZ28:
<strong>I can see that cam holding to the high 6k range but I don't see you peaking at 6800 with a cam only setup. Would love to see some dyno graphs when you get it all worked out.

Tim</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I just looked at dyno and it peaked at 6200 and maintained peak to 6400, this cam shouldnt need more than 6800 shifts, IMo. At 6900 motor lost 20 hp, peak torque is at 4800, this is a pretty common power band and shouldnt really be that hard to utilize.
Reply
Old Mar 17, 2002 | 07:04 PM
  #15  
LS1derfull's Avatar
TECH Addict
 
Joined: Dec 2001
Posts: 2,298
Likes: 2
From: new england
Default Re: MMS 229 v2.1 is in

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by TimZ28:
<strong>I can see that cam holding to the high 6k range but I don't see you peaking at 6800 with a cam only setup. Would love to see some dyno graphs when you get it all worked out.

Tim</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I just looked at dyno and it peaked at 6200 and maintained peak to 6400, this cam shouldnt need more than 6800 shifts, IMo. At 6900 motor lost 20 hp, peak torque is at 4800, this is a pretty common power band and shouldnt really be that hard to utilize. This was with no cats also so i think that would raise peak slightly also.
Reply
Old Mar 18, 2002 | 12:14 AM
  #16  
Fireball's Avatar
Thread Starter
TECH Senior Member
20 Year Member
iTrader: (21)
 
Joined: Nov 2001
Posts: 8,484
Likes: 0
From: Cecil County Raceway!!!
Default Re: MMS 229 v2.1 is in

duration at .006: 281
C/L: 111
duration at .050: 230
Reply
Old Mar 18, 2002 | 12:26 AM
  #17  
John B's Avatar
Moderator
20 Year Member
Photogenic
Photoriffic
Liked
iTrader: (10)
 
Joined: Nov 2001
Posts: 3,264
Likes: 21
From: Phoenix, AZ
Default Re: MMS 229 v2.1 is in

Fireball, you're going to be disappointed when you learn that LS1_Edit only takes gear ratio's up to 4.56! Better have Ken make a software revision for you <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
Reply
Old Mar 18, 2002 | 07:01 AM
  #18  
Fireball's Avatar
Thread Starter
TECH Senior Member
20 Year Member
iTrader: (21)
 
Joined: Nov 2001
Posts: 8,484
Likes: 0
From: Cecil County Raceway!!!
Default Re: MMS 229 v2.1 is in

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by LS1derfull:
<strong>[QUOTE]I just looked at dyno and it peaked at 6200 and maintained peak to 6400, this cam shouldnt need more than 6800 shifts, IMo. At 6900 motor lost 20 hp, peak torque is at 4800, this is a pretty common power band and shouldnt really be that hard to utilize. This was with no cats also so i think that would raise peak slightly also.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">well, that graph really looks like it peaks around 6250 but holds essentially a flat line from 6250 to 6750 rpm. then it falls. This is why I was saying peak at 6800. My plan is to set my shift light to 6800 and I usually nail it within 100 rpm to my shiftlite. so 6800-6900 shifts should work.
Reply
Old Mar 18, 2002 | 01:19 PM
  #19  
Fireball's Avatar
Thread Starter
TECH Senior Member
20 Year Member
iTrader: (21)
 
Joined: Nov 2001
Posts: 8,484
Likes: 0
From: Cecil County Raceway!!!
Default Re: MMS 229 v2.1 is in

thats why I did this...its not what everyone else has done. dyno testing will let me know where it peaks <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
Reply
Old Mar 18, 2002 | 02:13 PM
  #20  
Jason99T/A's Avatar
I can shift faster than you.
iTrader: (21)
 
Joined: Nov 2001
Posts: 5,133
Likes: 0
From: Baton Rouge, LA
Default Re: MMS 229 v2.1 is in

Brian, when do you plan on dynoing?
Reply



All times are GMT -5. The time now is 02:16 PM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE