Dynamometer Results & Comparisons Dyno Records | Dyno Discussion | Dyno Wars

Ported 241's and Cutout Results

Thread Tools
 
Search this Thread
 
Old Mar 11, 2010 | 11:25 AM
  #1  
asthmamax11's Avatar
Thread Starter
On The Tree
15 Year Member
Photogenic
Liked
 
Joined: Dec 2008
Posts: 101
Likes: 25
Default Ported 241's and Cutout Results





Red is with Cutout open
Solid 6 whp and 7 wtq gain from the cutout

I made 409 whp and 394 wtq before the ported 241's and cutout. Note that I also have a 12 bolt with 4.10's now as well. So if I factor in the loss from the 12 bolt I would guesstimate a 30 whp gain from the ported 241's.

2002 Trans Am 6-speed
Advanced Induction ported 241 heads
Custom Comp Cam
Bolt-Ons
12 bolt w/ 4.10's
Reply
Old Mar 11, 2010 | 12:06 PM
  #2  
smok'nZ's Avatar
MASS seller approved
15 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (160)
 
Joined: Apr 2006
Posts: 1,960
Likes: 3
From: OKLAHOMA
Default

nice numbers what size cam
Reply
Old Mar 11, 2010 | 01:49 PM
  #3  
Titanws6's Avatar
TECH Resident
15 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (35)
 
Joined: Nov 2007
Posts: 762
Likes: 0
From: Rowlett, TX
Default

Nice results, looks like Josh has it dialed in just right
Reply
Old Mar 11, 2010 | 05:58 PM
  #4  
asthmamax11's Avatar
Thread Starter
On The Tree
15 Year Member
Photogenic
Liked
 
Joined: Dec 2008
Posts: 101
Likes: 25
Default

Originally Posted by smok'nz
nice numbers what size cam
228/232
Reply
Old Mar 11, 2010 | 06:01 PM
  #5  
Gregorya24's Avatar
Launching!
iTrader: (13)
 
Joined: Jan 2008
Posts: 285
Likes: 0
From: Charleston, SC
Default

nice i made 470rwhp on ai's 241's
Reply
Old Mar 12, 2010 | 11:15 AM
  #6  
FrankSSCamaro's Avatar
Teching In
 
Joined: Feb 2010
Posts: 35
Likes: 0
From: San Diego, CA
Default

what exhaust setup do you run?
Reply
Old Mar 12, 2010 | 12:24 PM
  #7  
asthmamax11's Avatar
Thread Starter
On The Tree
15 Year Member
Photogenic
Liked
 
Joined: Dec 2008
Posts: 101
Likes: 25
Default

Originally Posted by FrankSSCamaro
what exhaust setup do you run?

Pacesetters with Magnaflow cb and a summit Cutout
Reply
Old Mar 12, 2010 | 01:13 PM
  #8  
FrankSSCamaro's Avatar
Teching In
 
Joined: Feb 2010
Posts: 35
Likes: 0
From: San Diego, CA
Default

damn, im gonna get some cutouts....it cant hurt. 7WHP is hard to argue with
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-1

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-2

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-3

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

 Verdad Gallardo
story-4

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

 Pouria Savadkouei
story-5

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

 Verdad Gallardo
story-6

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-7

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-8

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-9

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

 Verdad Gallardo
Old Mar 12, 2010 | 07:26 PM
  #9  
spdygon's Avatar
On The Tree
iTrader: (1)
 
Joined: Jul 2007
Posts: 172
Likes: 3
Default

may be wrong but i have seen setup like that be near 450whp.
or does a set of after market heads make that big of a diffrence?AFR,TF,etc.
Reply
Old Mar 12, 2010 | 07:47 PM
  #10  
zlicious94's Avatar
TECH Apprentice
iTrader: (1)
 
Joined: Jan 2007
Posts: 321
Likes: 1
From: Troutdale,OR
Default

AI ftw!! They are doin big things with lt1's and ls1's
Reply
Old Mar 13, 2010 | 01:44 PM
  #11  
Titanws6's Avatar
TECH Resident
15 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (35)
 
Joined: Nov 2007
Posts: 762
Likes: 0
From: Rowlett, TX
Default

Originally Posted by spdygon
may be wrong but i have seen setup like that be near 450whp.
or does a set of after market heads make that big of a diffrence?AFR,TF,etc.
Yes they do, they flow even more than a ported 241, especially with a FAST. That would put you at 450
Reply
Old Mar 13, 2010 | 07:09 PM
  #12  
Damian's Avatar
LSX Mechanic
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (89)
 
Joined: Nov 2001
Posts: 10,396
Likes: 14
From: Atlanta
Default

Let me clarify a few things here...

Bruce was a ding dong and went to the dyno without me ( ), so I wasn't able to dial the setup in. If I was present with him on the dyno I could've probably got the car in the 430-435rwhp and 400'ish TQ range.

Which is a respectable # for Stage 1 241's, 12 bolt/4:10's, stock intake, and a rather small 228/232 cam. The heads have stock valves.

We'll get some better #'s when Bruce and I can schedule a time to go together to the dyno for some adjustments. These are preliminary #'s.
Reply
Old Mar 13, 2010 | 11:32 PM
  #13  
asthmamax11's Avatar
Thread Starter
On The Tree
15 Year Member
Photogenic
Liked
 
Joined: Dec 2008
Posts: 101
Likes: 25
Default

definately preliminary #'s. I'm still impressed the ported 241's gave me as much as they did though!
Reply
Old Mar 14, 2010 | 04:25 PM
  #14  
Damian's Avatar
LSX Mechanic
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (89)
 
Joined: Nov 2001
Posts: 10,396
Likes: 14
From: Atlanta
Default

Yep.

Nice big fat TQ curve though. Thats what matters.
Reply
Old Mar 15, 2010 | 08:06 AM
  #15  
Detoxx03's Avatar
10 Second Club
iTrader: (14)
 
Joined: Jan 2007
Posts: 7,336
Likes: 74
From: Woodward Avenue
Default

Thats a pretty good gain from the stock heads
Reply
Old Mar 16, 2010 | 08:45 PM
  #16  
TTA1437's Avatar
On The Tree
15 Year Member
Photogenic
iTrader: (7)
 
Joined: Mar 2007
Posts: 146
Likes: 0
From: Montgomery, AL
Default

Great numbers! Sweet combo and I love the Keep it Simple Stupid rule that you are using with maximizing those parts.

Awesome man! Let Damian tune it. Post a video if you can.
Reply
Old Mar 17, 2010 | 06:26 PM
  #17  
mike c.'s Avatar
10 Second Club
iTrader: (1)
 
Joined: Mar 2002
Posts: 4,031
Likes: 2
From: mi
Default

Nice. Graph has a steady pull to it.
Reply
Old Mar 29, 2010 | 11:17 AM
  #18  
kinglt-1's Avatar
TECH Senior Member
20 Year Member
Liked
Loved
Community Favorite
iTrader: (26)
 
Joined: Jul 2005
Posts: 5,898
Likes: 255
From: Ft. Wayne, IN
Default

Nice numbers! Ai does great work!!
Reply
Old Mar 29, 2010 | 04:00 PM
  #19  
mike c.'s Avatar
10 Second Club
iTrader: (1)
 
Joined: Mar 2002
Posts: 4,031
Likes: 2
From: mi
Default

My exhaust sucks so bad I gain 17hp from a open cutout. I have kook 1 7/8 w/custom build off road and the power killer is the b&b tryflow catback. The b&b sucks for power...
Reply
Old Mar 29, 2010 | 06:24 PM
  #20  
WeathermanShawn's Avatar
TECH Enthusiast
iTrader: (1)
 
Joined: Dec 2005
Posts: 549
Likes: 0
From: Denver International Airport, Colorado USA
Default

Originally Posted by Damian
Let me clarify a few things here...

Bruce was a ding dong and went to the dyno without me ( ), so I wasn't able to dial the setup in. If I was present with him on the dyno I could've probably got the car in the 430-435rwhp and 400'ish TQ range.

Which is a respectable # for Stage 1 241's, 12 bolt/4:10's, stock intake, and a rather small 228/232 cam. The heads have stock valves.

We'll get some better #'s when Bruce and I can schedule a time to go together to the dyno for some adjustments. These are preliminary #'s.
Bruce, why were you being such a ding-dong?

Let us know how it goes. I am always curious to see how much cutouts affect HP/TQ.

Nice ride!
Reply




All times are GMT -5. The time now is 06:14 AM.

story-0
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-1
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-2
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-3
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-4
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-5
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-6
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-7
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-8
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-9
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