Exhaust Post your questions and suggestions about stock or aftermarket exhaust setups. Third Gen exhaust sound files and videos!

What kind of exhaust for 400 horses

Thread Tools
 
Search this Thread
 
Old Mar 1, 2001 | 08:38 AM
  #1  
Brandog87GTA's Avatar
Thread Starter
Member
 
Joined: Mar 2000
Posts: 201
Likes: 0
From: chatt,TN,US
What kind of exhaust for 400 horses

I have hedman headers with a custom 2 1/2 inch Y pipe on each side which connect to a 3? inch main pipe that leads to my two chamber flowmaster which exits with two 2 1/2inch pipes. Is this an adequate exhaust for my application? Or can I do something better?

------------------
Bright red 87 GTA with I have stock 3.27 gears,stock converter,B&M shift kit, TRW forged 9.75:1 pistons,comp cams pushrods, edelbrock valvesprings, 462 camel hump heads with 2.02in/1.60ex redrilled for angled plugs, 3 angle valve job, ported and polished, performer RPM intake, mallory fp regulator, edelbrock 750 CFM carb, hei ignition(new) with 10,000 volt coil,No cat, flowmaster 2 chamber mufflers, hedman full length headers, edelbrock cam with 488/501
Reply
Old Mar 1, 2001 | 11:26 AM
  #2  
91Bird305's Avatar
Supreme Member
25 Year Member
 
Joined: Oct 1999
Posts: 2,977
Likes: 1
From: Davison / Troy ,Michigan
Car: 1991 Pontiac Firebird
Engine: 3.8
Transmission: 700r4
Axle/Gears: Dana 60
Hmm, well maybe u could get a bigger Y-pipe with a 3" collector at the bottom and are u sure the exaust cat-back is a 3" system? Cause how does a 2.5" collector fit onto a 3" cat-back? Anyways, if u have a 2.5" cat-back u need to upgrade it to either a 3" at least of a 4" but no higher than that.

------------------
Eric Natzke
91 Firebird 305 TBI
"It Ain't Stock"
http://members.aol.com/j007golden/91firebird.html
For info on certain parts or mods go to the site below
http://members.aol.com/j007golden/modeval.html
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Hotrodboba400
Firebirds for Sale
3
Dec 10, 2019 07:07 PM
IROCtometal
TPI
2
Sep 20, 2015 11:08 PM
IROCtometal
TPI
3
Sep 9, 2015 10:01 AM
Hotrodboba400
Firebirds for Sale
0
Sep 2, 2015 07:28 PM
z28guy134
Engine Swap
1
Sep 1, 2015 11:50 PM




All times are GMT -5. The time now is 04:39 AM.