![]() |
|
![]() |
#1 |
People know me
Join Date: Jun 2007
Location: Hermiston, oregon
Posts: 840
|
single exaust?
Well I was wanting to go dual exaust on the blazer, but got to thinking what about a single 3" exaust? anyone done it? happy? or should i go dual 2 1/2 exaust like I had on my shortbox with 3" flowmasters
__________________
1972 k/5 blazer CST 4X4 Crate 350, th350/205, dana44with trac-loc/14 bolt with detroit locker, 4 wheel discs 4.56s, 8" suspension lift using 73-87springs, 1" zerorate custom front crossmember, HAD CV drivelines and driveshaft e-brake, full cage, PRP seats, Full autometer gauges, 38x14.5x16 Toyo M/Ts, 16x10 Polished aluminum rockcrusher wheels 1967 longbox 4x4, Strong 400/400/208, 44/12bolt 4.10s, 6" lift, 35" Toyo M/Ts on corvette rally wheels |
![]() |
![]() |
![]() |
#2 |
Active Member
Join Date: Feb 2006
Location: sa tx
Posts: 851
|
Re: single exaust?
Go with the 2 1/2 dual you will be happy and it will run better.
__________________
1972 K5 Blazer ALL ORIGINAL paint & engine, A/C, Tilt, 4sp, AM/FM, Tow Hooks, Aux Battery Tray, Tach, Vacuum 2004 FORD FX4 SuperCrew 2005 CTS-V 12 sec family car ![]() 2008 Buick Enclave AWD, Nav, & DVD, Wife LOVES it! |
![]() |
![]() |
![]() |
#3 |
Senior Member
![]() Join Date: May 2006
Location: Philadelphia, Pa. 19454
Posts: 9,508
|
Re: single exaust?
2 1/2" ramhorns and the same size exhaust pipes is what I'm installing now, well once I get my floorboards and frame rails painted... J.
__________________
Semper Fi...Uncle Sam, you da man All parts offered to help are free, unless otherwise noted Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training SAFETY FIRST AS usual, off topic They say your mind goes second, can't remember the first Jim Last edited by jaros44sr; 11-07-2007 at 04:54 PM. |
![]() |
![]() |
![]() |
#4 |
People know me
Join Date: Jun 2007
Location: Hermiston, oregon
Posts: 840
|
Re: single exaust?
it is stock ramhorns, and a stock motor with an rv cam, not a tireburner by no means, just want it to sound good, this id my dd and a cruiser, not looking for high performance, just a good sound, I have a pair of 3" flowmasters that I will be using.
__________________
1972 k/5 blazer CST 4X4 Crate 350, th350/205, dana44with trac-loc/14 bolt with detroit locker, 4 wheel discs 4.56s, 8" suspension lift using 73-87springs, 1" zerorate custom front crossmember, HAD CV drivelines and driveshaft e-brake, full cage, PRP seats, Full autometer gauges, 38x14.5x16 Toyo M/Ts, 16x10 Polished aluminum rockcrusher wheels 1967 longbox 4x4, Strong 400/400/208, 44/12bolt 4.10s, 6" lift, 35" Toyo M/Ts on corvette rally wheels |
![]() |
![]() |
![]() |
#5 |
Registered User
Join Date: May 2007
Location: Moore, Oklahoma
Posts: 2,396
|
Re: single exaust?
I ran single exhaust on my '88 Blazer (3" with a Flowmaster 50 series muffler) for some very good reasons. It also sounds good without the annoying Flowmaster dual exhaust death rattle a lot of them have
It has a stock motor. The single exhaust systems do not rattle loose nearly as frequently as the dual systems do, whether you use them on the street or off-road , plus the performance gains from using duals on a stock motor is smaller than most would like to think, and virtually non-existent when comparing it to a 3" system for a stock small block. Why would the factories "cripple" their vehicles with a single exhaust system If it is really that bad? They wouldnt. It is more reliable, and can have similar performance with a stock motor in everyday driving conditions. Drawbacks -- when re-doing the exhaust on an older vehicle - the y-pipe is almost never salvageable, and they take more time and effort to re-make than just "runnin duals out the back" --- duals are more profitable. The old y-pipe is also a seriously restricted area in a truck too |
![]() |
![]() |
![]() |
#6 |
The LuvShack Garage
Join Date: Jan 2004
Location: Maple Grove, TN (West Side)
Posts: 30,477
|
Re: single exaust?
You can actually gain torque w/ single exhaust, and it only restricts it if you have
insane HP. This chart that I post on here all the time will give you a data point. I am not an expert, but I did spend 2.5 years working part time at a muffler shop ![]() My old 87 Formula had 3" pipe from F to R, A 3" flowmaster muffler, and a 4x28 tip ![]()
__________________
Owner/Op: "TN Classic Transport Carriers" The Toy: "Square Vette" 72 Hybrid Blazer Toy Barn: "LuvShack" 40 x 60 x 20 Shop Tow Piggy:"Maddy" 88 Silverado 3500 Hauler: "Feathers" 14 Aluma 8218T |
![]() |
![]() |
![]() |
#7 |
I'm a poor spectator
Join Date: Aug 2006
Location: San Antonio, Tx
Posts: 2,287
|
Re: single exaust?
I've got dual 2.25 in mine and i'm pretty satisfied with it. When I first got my truck going I ran it with open headers for a couple days and then put the exhaust on, it ran a ton better and was quicker too.
__________________
2006 Jeep Unlimited IMPACT ORANGE 1993 Chevy 2500 4x4 ExCab LWB 454/NV4500 Tow rig ![]() 1977 Ford F100 2x4 LWB 1st truck I owned, still have it!!! ![]() 1979 Ford F150 4x4 SWB Built Ford Tough!!! ![]() 1971 Chevy Blazer 350 / SM465 / NP205 UNDER CONSTRUCTION Soon to have a LQ4 6.0!!! |
![]() |
![]() |
![]() |
Bookmarks |
|
|