GM Engine & Exhaust Performance EFI | GEN I/GEN II/GEN III/GEN IV Engines |Small Block | Big Block |

Anyone here hitting 450-500 RWHP with a single 3" exhaust pipe?

Thread Tools
 
Search this Thread
 
Old Apr 15, 2010 | 10:02 PM
  #11  
Mangled03gmc's Avatar
Baltimore Whore
20 Year Member
iTrader: (95)
 
Joined: Apr 2004
Posts: 16,820
Likes: 2
From: In a van DOWN BY THE RIVER
Default

Originally Posted by 1slow01Z71
You talking about lil sis?
Gah I dunno, one of his trucks, that was making big powa
Reply
Old Apr 15, 2010 | 10:04 PM
  #12  
1slow01Z71's Avatar
Tin Foil Hat Wearin' Fool
iTrader: (36)
 
Joined: Oct 2004
Posts: 23,204
Likes: 4
From: Austin, TX
Default

The rcsb white gmc with a 370/pt-88? If so it has a cutout, when I saw it at SAR you could see the exhaust blowing the burnout smoke off to the side under the truck back in Feb when I saw it.
Reply
Old Apr 15, 2010 | 10:07 PM
  #13  
hirdlej's Avatar
Thread Starter
TECH Junkie
iTrader: (31)
 
Joined: Dec 2004
Posts: 3,471
Likes: 1
From: Minneapolis, MN
Default

I don't want to use a cutout. I just want to keep the setup as quiet as possible using magnaflow mufflers. The problem is, running a true dual setup with magnaflow muffs doesn't leave me a lot of room since I'm a RCSB. I'd have at least another $500-$600 in exhaust going to a true dual setup. If I go with a single 3" setup, I already have that catback setup. I'd just need to tie into what I have and be done.
Reply
Old Apr 15, 2010 | 10:11 PM
  #14  
hirdlej's Avatar
Thread Starter
TECH Junkie
iTrader: (31)
 
Joined: Dec 2004
Posts: 3,471
Likes: 1
From: Minneapolis, MN
Default

With my new cam, heads and headers coming, I just want to make sure the exhaust will easily support 450-500RWHP. If so, I'm golden. That's why I was checking to see what guys were able to squeeze out of a 3" setup/.
Reply
Old Apr 15, 2010 | 10:12 PM
  #15  
1slow01Z71's Avatar
Tin Foil Hat Wearin' Fool
iTrader: (36)
 
Joined: Oct 2004
Posts: 23,204
Likes: 4
From: Austin, TX
Default

Sounds like you already knew the answer to your question before you asked it then? You dont want to spend the moeny on duals, you dont want a cutout, that only leaves keeping what youve got. I fail to see what is wrong with using a cutout but whatever you want.
Reply
Old Apr 15, 2010 | 10:14 PM
  #16  
1slow01Z71's Avatar
Tin Foil Hat Wearin' Fool
iTrader: (36)
 
Joined: Oct 2004
Posts: 23,204
Likes: 4
From: Austin, TX
Default

Originally Posted by hirdlej
With my new cam, heads and headers coming, I just want to make sure the exhaust will easily support 450-500RWHP. If so, I'm golden. That's why I was checking to see what guys were able to squeeze out of a 3" setup/.
Patrick G gained 15rwhp on a H/C/I 346 by just adding a flowmaster collector with a 4" cutout. Search over on tech you will find that a single 3 is not enough for the hp you want. There will be power left on the table.
Reply
Old Apr 15, 2010 | 10:15 PM
  #17  
hirdlej's Avatar
Thread Starter
TECH Junkie
iTrader: (31)
 
Joined: Dec 2004
Posts: 3,471
Likes: 1
From: Minneapolis, MN
Default

No, I don't know if anyone using a 3" catback pushing decent power. That's why I'm asking. I could do a cutout but I only do my driving on the street. I want my full power potential at all times.
Reply
Old Apr 15, 2010 | 10:16 PM
  #18  
1slow01Z71's Avatar
Tin Foil Hat Wearin' Fool
iTrader: (36)
 
Joined: Oct 2004
Posts: 23,204
Likes: 4
From: Austin, TX
Default

Originally Posted by hirdlej
No, I don't know if anyone using a 3" catback pushing decent power. That's why I'm asking. I could do a cutout but I only do my driving on the street. I want my full power potential at all times.
Thats what the little electric button is for
Reply
Old Apr 15, 2010 | 10:16 PM
  #19  
GMCtrk's Avatar
TECH Senior Member
iTrader: (27)
 
Joined: Jul 2004
Posts: 12,275
Likes: 19
From: Dallas
Default

Specs on the new setup? I'm curious how a new cam and heads is going to gain 100 rwhp.

Regarding the exhaust, why don't you be the test dummy? Much like you I question the ability of a single 3" catback to support 450 rwhp....however, seeing stock48 go 9s on a 3.5" pipe makes me think 3" is more than enough.
Reply
Old Apr 15, 2010 | 10:22 PM
  #20  
1slow01Z71's Avatar
Tin Foil Hat Wearin' Fool
iTrader: (36)
 
Joined: Oct 2004
Posts: 23,204
Likes: 4
From: Austin, TX
Default

Having a power adder changes everything, exhaust scavenging expecially in a turbo setup is no where near as critical as an NA engine.
Reply



All times are GMT -5. The time now is 06:08 PM.