which exhaust tube diameter
10-08-2015, 10:10 PM
#1
Junior Member
Thread Starter
Join Date: Aug 2015
Location: Virginia
Posts: 30
Likes: 0
Received 1 Like
on
1 Post
Car: 1985 T-Top RS
Engine: 350
Transmission: currently a T-5
Axle/Gears: 3.23
which exhaust tube diameter
Have an 85 z28 that I have dropped a crate motor that is rated 290hp. I have read many threads and I am unsure if I should use 2.5 or 3 inch pipe. A little help please.
10-09-2015, 01:13 AM
#2
Supreme Member
Join Date: Apr 2006
Location: Northern, CA
Posts: 4,482
Likes: 0
Received 8 Likes
on
8 Posts
Car: 1989 Iroc-Z Camaro
Engine: TBI,5.0
Transmission: Automatic 700R4
Axle/Gears: Eaton Posi,3.42,LPW Ultimate Cover
Re: which exhaust tube diameter
There are many , many here that build there car taking into consideration and upgrade in power some day. There are those that plan for "a lot" more power and will run true duals with long tube headers. Some use 2.5 pipe to keep backpressure/velocity/etc.
That is the only time 2.5in IMO should be considered.
A nice true 3" system with "shorty" headers is what IMO should be used for power in the range your in.
That is the only time 2.5in IMO should be considered.
A nice true 3" system with "shorty" headers is what IMO should be used for power in the range your in.
Last edited by Ron U.S.M.C.; 10-09-2015 at 01:25 AM.
10-09-2015, 12:59 PM
#5
Supreme Member
iTrader: (2)
Join Date: Mar 2014
Location: South Ms
Posts: 4,419
Received 721 Likes
on
490 Posts
Car: 89 Firebird
Engine: 355 TBI
Transmission: 700R4
Axle/Gears: 10 Bolt.Posi-3.73s
Re: which exhaust tube diameter
There are many , many here that build there car taking into consideration and upgrade in power some day. There are those that plan for "a lot" more power and will run true duals with long tube headers. Some use 2.5 pipe to keep backpressure/velocity/etc.
That is the only time 2.5in IMO should be considered.
A nice true 3" system with "shorty" headers is what IMO should be used for power in the range your in.
That is the only time 2.5in IMO should be considered.
A nice true 3" system with "shorty" headers is what IMO should be used for power in the range your in.
10-10-2015, 03:31 PM
#6
Re: which exhaust tube diameter
The only thing I HATE about the 2055's are the collectors. When I had mine I measured the collectors and they were only 1.75!! That's why for a budget build I use the 2460's, a Doug's D901 y pipe modified with a 3 inch outlet. Much better flow in my opinion
Thread
Thread Starter
Forum
Replies
Last Post
EvilMunky707
Engine/Drivetrain/Suspension Wanted
2
11-30-2015 03:00 PM