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

H/C/I low Dyno Numbers??

Thread Tools
 
Search this Thread
 
Old Jan 17, 2019 | 04:49 PM
  #21  
Chris25's Avatar
TECH Resident
iTrader: (1)
 
Joined: Sep 2013
Posts: 774
Likes: 114
From: Clearwater, FL
Default

Originally Posted by Dylan Latshaw
-15 what do you mean?
Flowmasters seem to choke cars up. most cars that pull em and run a straight through design gain on the Dyno. Also your car definitely would benefit from 3" exh
Reply
Old Jan 17, 2019 | 04:51 PM
  #22  
Chris25's Avatar
TECH Resident
iTrader: (1)
 
Joined: Sep 2013
Posts: 774
Likes: 114
From: Clearwater, FL
Default

Originally Posted by Dylan Latshaw
bbk headers. I ported the heads
Swap those bbks for the SE 17/8 headers and 3" true duals and ditch the ls6 intake for a ported fast 92 and 92mm tb and FTP 98mm lid with a 85mm maf. Bet that thing would scream.
Reply
Old Jan 17, 2019 | 05:22 PM
  #23  
jhshnh's Avatar
TECH Resident
10 Year Member
Photogenic
 
Joined: Oct 2014
Posts: 898
Likes: 71
Default

Originally Posted by Dylan Latshaw
bbk headers. I ported the heads
Hand ported?
Reply
Old Jan 17, 2019 | 05:30 PM
  #24  
Dylan Latshaw's Avatar
Thread Starter
On The Tree
 
Joined: Oct 2013
Posts: 135
Likes: 0
Default

Originally Posted by Chris25
Swap those bbks for the SE 17/8 headers and 3" true duals and ditch the ls6 intake for a ported fast 92 and 92mm tb and FTP 98mm lid with a 85mm maf. Bet that thing would scream.
lol I wish I had 3k to spend 😁
Reply
Old Jan 17, 2019 | 05:37 PM
  #25  
G Atsma's Avatar
TECH Senior Member
5 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2016
Posts: 22,304
Likes: 3,619
From: Central Cal.
Default

You don't need to go that far; nice ideas though, huh?
Anyway, when you can, put a 3" or 3.5" mid pipe to a same-size muffler and tailpipe. While not totally optimum, it would be a huge improvement over what you have, and will make the power a lot closer to your original expectations.
Reply
Old Jan 17, 2019 | 05:45 PM
  #26  
98CayenneT/A's Avatar
TECH Junkie
10 Year Member
Photogenic
Liked
Loved
 
Joined: Nov 2013
Posts: 3,913
Likes: 366
From: White Bear, Mn
Default

4in. flow master y pipe merger into 4in. cutout
Reply
Old Jan 17, 2019 | 05:50 PM
  #27  
Dylan Latshaw's Avatar
Thread Starter
On The Tree
 
Joined: Oct 2013
Posts: 135
Likes: 0
Default

Originally Posted by G Atsma
You don't need to go that far; nice ideas though, huh?
Anyway, when you can, put a 3" or 3.5" mid pipe to a same-size muffler and tailpipe. While not totally optimum, it would be a huge improvement over what you have, and will make the power a lot closer to your original expectations.
deffinantly. If I had the money that's what is do. I found a 3in magnaflow full exhaust for 225. Might do that. Just need a 3in y pipe.
Reply
Old Jan 17, 2019 | 05:56 PM
  #28  
G Atsma's Avatar
TECH Senior Member
5 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2016
Posts: 22,304
Likes: 3,619
From: Central Cal.
Default

Either that or a Flowmaster merge with the inlets sized like the legs of your Y, and a 3" outlet. Any muffler shop can weld all that together. You shouldn't need a whole new Y.
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 Jan 17, 2019 | 06:22 PM
  #29  
Dylan Latshaw's Avatar
Thread Starter
On The Tree
 
Joined: Oct 2013
Posts: 135
Likes: 0
Default

Originally Posted by G Atsma
Either that or a Flowmaster merge with the inlets sized like the legs of your Y, and a 3" outlet. Any muffler shop can weld all that together. You shouldn't need a whole new Y.
I think my y pipe is 2.5in aswell..
Reply
Old Jan 17, 2019 | 06:36 PM
  #30  
Darth_V8r's Avatar
Moderator
10 Year Member
Liked
Loved
Community Favorite
iTrader: (4)
 
Joined: Jul 2014
Posts: 10,450
Likes: 1,873
From: My own internal universe
Default

Originally Posted by Dylan Latshaw
deffinantly. If I had the money that's what is do. I found a 3in magnaflow full exhaust for 225. Might do that. Just need a 3in y pipe.
Won't be enough to reach full potential.

Originally Posted by 98CayenneT/A
4in. flow master y pipe merger into 4in. cutout
This is your best option
Reply
Old Jan 17, 2019 | 06:46 PM
  #31  
HioSSilver's Avatar
10 Second Club
20 Year Member
Liked
Loved
Community Favorite
iTrader: (8)
 
Joined: Aug 2002
Posts: 6,128
Likes: 645
From: Winchester, VA
Default

1 word

Speed engineering true duals

Reply
Old Jan 17, 2019 | 07:03 PM
  #32  
Chris25's Avatar
TECH Resident
iTrader: (1)
 
Joined: Sep 2013
Posts: 774
Likes: 114
From: Clearwater, FL
Default

Originally Posted by Dylan Latshaw
lol I wish I had 3k to spend 😁
Honestly headers and true duals 500$ from speed engineering used fast 92 can be found for a good price now and days eBay 92mm tb used truck maff descreened and a used 98mm lid.
Reply
Old Jan 17, 2019 | 07:23 PM
  #33  
G Atsma's Avatar
TECH Senior Member
5 Year Member
Liked
Loved
Community Favorite
 
Joined: Jun 2016
Posts: 22,304
Likes: 3,619
From: Central Cal.
Default

Originally Posted by Chris25
Honestly headers and true duals 500$ from speed engineering used fast 92 can be found for a good price now and days eBay 92mm tb used truck maff descreened and a used 98mm lid.
Great ideas! My main thought with my suggestions was something he can do much sooner considering he's operating on a tight budget. A (2) 2.5" into a 3" or 3.5" merge, into a like size midpipe and muffler is more budget friendly than changing out his whole system. Doing this before anything else will gain a ton of power. If/when the budget allows, all the other stuff can follow.
Reply
Old Jan 18, 2019 | 12:31 AM
  #34  
Dylan Latshaw's Avatar
Thread Starter
On The Tree
 
Joined: Oct 2013
Posts: 135
Likes: 0
Default

Originally Posted by Chris25
Honestly headers and true duals 500$ from speed engineering used fast 92 can be found for a good price now and days eBay 92mm tb used truck maff descreened and a used 98mm lid.
ok so 2k for all used parts that will probably gain me 20ish horsepower... or i can keep my good 92mm tb. Good ls6 intake, aftermarket maf, new bbk headers etc and add a full 3in exhaust for 50 bucks and a 100 dollar y pipe.. That'll gain me 10-15sh horsepower. 5-10 horsepower isn't worth all the time later and money it's take.. I could get a nitrous kit for 600 bucks and make 100 more hp....i have the supporting mods to do so...
Reply
Old Jan 18, 2019 | 12:34 AM
  #35  
Dylan Latshaw's Avatar
Thread Starter
On The Tree
 
Joined: Oct 2013
Posts: 135
Likes: 0
Default

Originally Posted by G Atsma
Great ideas! My main thought with my suggestions was something he can do much sooner considering he's operating on a tight budget. A (2) 2.5" into a 3" or 3.5" merge, into a like size midpipe and muffler is more budget friendly than changing out his whole system. Doing this before anything else will gain a ton of power. If/when the budget allows, all the other stuff can follow.
I'll probably do something like this. Thabks guys! I talked to a tuner in Asheboro and he mentioned how bad CAM is..... so I'm going to put a new exhaust on there. Do a couple little things and send it to him to hopefully get my numbers to where I thought they'd be... above 425
Reply
Old Jan 18, 2019 | 03:49 AM
  #36  
madmike9396's Avatar
TECH Junkie
15 Year Member
Liked
Loved
Community Favorite
iTrader: (29)
 
Joined: Jan 2009
Posts: 3,392
Likes: 220
From: North Carolina
Default

Were gonna help him get his car straightened out.

for those that dont know the place he took his car CAM Carolina Auto Masters is filled with a bunch of idiots and i dont understand how this place is still in business.

if you ever hear anyone saying their gonna use that shop please steer them clear of those retards. Way to many horror stories I've heard and read about that place
Reply
Old Jan 18, 2019 | 04:22 AM
  #37  
99 Black Bird T/A's Avatar
TECH Senior Member
20 Year Member
Liked
Loved
Community Favorite
iTrader: (4)
 
Joined: Nov 2001
Posts: 8,638
Likes: 1,501
Default

Dylan,

Having a pair of cut outs added directly off of the header is inexpensive. For track or dyno uncap the cut-outs. Electric is nice but manual is less expensive.

My RS had a similar exhaust issue because the shop notched the Y pipe collector to fit a certain type of subframe connector. At the end of the project money was very tight. Replacing the exhaust etc wasn't an option. The twin cutouts were worth 20 whp on the dyno. The gains were from the start of the dyno pull to the end. Gained every where. Torque also increased for the whole dyno pull. Way to loud uncapped for the street, basically like open headers.

A friend gained ~30+ hp with a similar set up. He had a stock I pipe /mid-life and cat back. With your current set up I would expect 20 to 30 whp.

If you want twin electric cuts off of the headers are an option with a lot of flexibility but more expensive.
Reply
Old Jan 18, 2019 | 06:04 AM
  #38  
Darth_V8r's Avatar
Moderator
10 Year Member
Liked
Loved
Community Favorite
iTrader: (4)
 
Joined: Jul 2014
Posts: 10,450
Likes: 1,873
From: My own internal universe
Default

Check our mavn thread in gen iii internal and gains going to SE duals before assuming 20 hp
Reply
Old Jan 18, 2019 | 06:06 AM
  #39  
Chris25's Avatar
TECH Resident
iTrader: (1)
 
Joined: Sep 2013
Posts: 774
Likes: 114
From: Clearwater, FL
Default

Originally Posted by Dylan Latshaw
ok so 2k for all used parts that will probably gain me 20ish horsepower... or i can keep my good 92mm tb. Good ls6 intake, aftermarket maf, new bbk headers etc and add a full 3in exhaust for 50 bucks and a 100 dollar y pipe.. That'll gain me 10-15sh horsepower. 5-10 horsepower isn't worth all the time later and money it's take.. I could get a nitrous kit for 600 bucks and make 100 more hp....i have the supporting mods to do so...
I was just throwing out an idea and you also have to take into account the money saved selling your ls6 intake headers and exhaust. Your right it seems expensive but this is a pay to play sport. The others have valid points with a good budget in mind.
Reply
Old Jan 18, 2019 | 07:29 AM
  #40  
Darth_V8r's Avatar
Moderator
10 Year Member
Liked
Loved
Community Favorite
iTrader: (4)
 
Joined: Jul 2014
Posts: 10,450
Likes: 1,873
From: My own internal universe
Default

Originally Posted by Dylan Latshaw
I'll probably do something like this. Thabks guys! I talked to a tuner in Asheboro and he mentioned how bad CAM is..... so I'm going to put a new exhaust on there. Do a couple little things and send it to him to hopefully get my numbers to where I thought they'd be... above 425
Will not happen if you are set on 3 inch Y and 3 inch cat back.

Personal experience -- Mamo 220 heads, arguably the best available for a 5.7, 227/235 cam, 1-7/8 headers, 3 inch Y and cat back, all kinds of optimization. 395 rwhp. Talk about PISSED. Tuner exact words -- something is wrong with your exhaust.

With open headers, 470. Add X pipe, 3 inch true dual, light clutch, 496.

Yes duals are expensive, but cheaper than buying a cheap exhaust and THEN duals. Believe it or not we are trying to SAVE you money.
Reply



All times are GMT -5. The time now is 11:19 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