Flowmaster restriction?
#1
Senior Member
Thread Starter
Join Date: Sep 2000
Location: Crystal Lake Il
Posts: 840
Likes: 0
Received 0 Likes
on
0 Posts
Car: '98 Z
Engine: LS1/6
Transmission: 4l60E
Flowmaster restriction?
I Bought a 3 inch flowmaster kit for my car when it still had the 305 in it. Its a 3 inck setup with a 2.5 inch exit, I'm confused why they didn't just make the whole thing 3 inch. Now that I had edelbrock TES, and a 3inch cat I'm wondering if this 2.5 inch exhaust is causing a noticeable restriction. About the only thing this tailpipe is good for is the sleeper look, but the lopey idle and hoodscoop kind of offset it now. I figure it'll cost me about a hundred dollars to get a 3 inch flowmaster muffler and tailpipe and I want to know if you guys think it'll be worth it
------------------
91 RS W/carbed 350, Vortec heads, performer rpm, Comp cams Xtreme energy 268 grind. BFG Drag radials. 3.42 posi,Corvette servoed 700r4, ****ty stock converter
13.24@104
------------------
91 RS W/carbed 350, Vortec heads, performer rpm, Comp cams Xtreme energy 268 grind. BFG Drag radials. 3.42 posi,Corvette servoed 700r4, ****ty stock converter
13.24@104
#2
Senior Member
Join Date: Mar 2000
Location: Red Bud, Illinois
Posts: 669
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1989 IROC-Z
Engine: 383
Transmission: Pro-Built 700R4 2400 ACT Stall
Axle/Gears: 2.77 Borg Warner 9-Bolt
I say get away from flowmaster, i've heard better reports of other cat-back systems liked dynomax and hooker aero chamer mufflers. I myself felt a reduction in HP when i installed my flowmaster cat-back. Maybe someone else would like to elaborate on this.
------------------
89 IROC-Z 350 TPI
-Flowmaster Catback
-Performance Resource Chip
-Rebuilt 700R4 Tranny
With the goodies to go
-K&N Airfilters
-Ported Plenum
-2.77 Gears (not much to brag about but eh, its there)
------------------
89 IROC-Z 350 TPI
-Flowmaster Catback
-Performance Resource Chip
-Rebuilt 700R4 Tranny
With the goodies to go
-K&N Airfilters
-Ported Plenum
-2.77 Gears (not much to brag about but eh, its there)
Thread
Thread Starter
Forum
Replies
Last Post
[Sold] Flowmaster exhaust system
Night rider327
Engine/Drivetrain/Suspension Parts for Sale
4
10-09-2015 09:25 AM