Before I install my TES headers I would like to know if anyone has installed headers and not felt any (or very little) increase. With the headache of installation and rust problems I am starting to wonder if I would be better off without them. Thanks!

------------------
85 IROC,LB9,t-tops,hard loaded,black with red Lear-Siegler "Camaro" interior,MacEwen white guages,145 speedo,decal delete,91 Bose stereo,stage 2 Fastchip,AFPR,airfoil,K&Ns,March pulleys,alum. driveshaft&spare,92 police version 700r4.
On the list: BW 3.27 posi,89 PBR rear discs,140a police alt,coated TES,glass hood,aluminum front bumper brace

"Use overdrive for high speed pursuit"

 

If you dont see an increase, something is wrong. I saw an increase, but not what I was expecting. I have heard of a lot of guys dropping 4 or 5 tenths with headers.

My car went 14.30s at 95-96 bone stock. Pulled the cat off, smog pump off, ported plenum, put headers on, catback exhaust, and I went to 14.10s at 98-99MPH. I got a solid 3 MPH out of all that which is probably worth somewhere around 30 solid HP.

------------------
L98, 3.27 9-bolt, Hooker shorty headers, custom 2.5inch Y-pipe, no cat, 3inch 2chamber flowmaster, JET AFPR, Ported MAF, Best ET: 13.86 @100mph. 1.99 60'
17 inch ROH "ZS" wheels. 17x8.5(front) and 17x9.5 (rear). Firestone Firehawk SZ50s. 245/45/zr17s and 275/40/zr17s. T56

On the way... Radar Blue 89 Formula, T56, Ram Jet 430, Ram Air, 17inch ROHs.

 

I threw headers on the V6 and it only knocked off about a tenth.

 

I saw no increase after installing Hooker headers and catback exhaust. Sorry to disappoint you.

------------------
'89 Firebird Formula 350
L98, WS6, Red/grey, t-tops, and a 3.27:1 rear
K&N, TB bypass, no MAF screens, CAI, full Accel ignition, no cats, Hooker Supercomp shorties, Hooker 3-inch catback
ET? The POS runs 15s.
Also own '83 Firebird 2.8 2bbl. 155K miles.
ET? Break out the calendar!

 

install them, I installed them and it is much better, sounds better also. Then you can tell people you have headers.

------------------
89 camaro 305 tbi, flomaster 3 chamber cat back, gutted cat, Edlebrock TES Headers, Exhaust cutout, Edlebrock open element, and a 160 degree T-stat. 2 kicker comp 12"'s, polk for the rest. Phoenix gold xs2300 to subs, kicker impulse 404XI to 4 speakers, pioneer DEH- P7000R head unit, and finally a 12 disc changer. Full leather interior from http://www.MrMikes.com (its nice)

 

If you install headers and see no improvement than something else is pluggin up power and not letting your engine breathe. The point of headers is to free up the restricions made by the stock manifold and Y pipe.

------------------
-Tas
'89 Formula WS-6

305, TBI, auto, 14x3 chrome flat based open element with K&N, Milodon 160* thermo, functional Formula hood, cross-flow Flowmaster, '99z28 rear pipes and tips....

Soon to be installed:
Hooker 1-5/8" 50 state legal headers, Dynomax 3" I pipe (PN 44063 and 43248), Catco 3" cat, and injector spacer.

Super GRK_Taz World
F-Body Dual Exaust
EFI & Intake Options
AOL IM: superGRtaz

 

Did you do a proper fuel pressure adjustment with your mods?

------------------
1989 IROC-Z 5.7L
NOS 150HP kit
ProBuilt 700R4, PI Vigilante 2800 stall lockup
Baer Brakes 12" Sport System

[This message has been edited by Omar (edited May 18, 2001).]

 

I don't have an AFPR, but I've always heard that the stock fuel pressure setting is usually right for most applications.

 

I had a stock 2-1/4" exhaust sytem, and I replaced it with 1-5/8" headers and 3" exhuast and the difference was like night and day. Gained .5 and 4MPH. My stock exhaust must have been holding back my other mods, because it make a HUGE difference.

------------------
If you live in Southeastern US, check us out!
South East Thirdgen

GM Master Tech
ASE Master Tech + L1
Savannah, GA

'87 Trans Am
S/D TPI retrofit including functional PassKey,
22# injectors,
Whatever chip I feel like burning,
JET AFPR, Ported Plenum,
TB Coolant Bypass, Custom Cold Air,
SSM SFC, KYB Shocks, Boxed LCAs, Wonder Bar,
8mm Accel wires,
Flowmaster Exhaust,
16" GTA rims,
Corvette Servo,
3.73 Posi
4wheel Disc Brakes

'97 Bonneville SSE

 

To get benefits from headers and exhaust system u have to upgrade the intake as well. Remember u want to improve breathing and exhailing in your motor.

------------------
92' camaro
New 305 block TPI conversion, Flat top pistons,Bore over .30 Forged parts all around,Edelbrock intake,ported plennum,ported corvette alluminum heads, accel cam,52mm throttle bodie, SLP runners Home aid cold air induction, Air foil,ford SVO 19lb injectors,fuel regulator,cloys timing chain, comp alluminum roller rocker arms and pushrods MSD 8.5 mm wires, bosch plattinum plugs, hypertech cap & rotor and coil, Edelbrock TES headers, free flowing catalytic converter and a 3 inch force II flowmaster exhaust system, and a 3 inch cutout,Zoom multi friction clutch, T-5 tranny,billenstien shocks&struts.
Soon to come!!!
Procharger system 12lbs o boost.
New paint job(hawaiin orchid purple)Cast alluminum ZR1 rims w/ 275 tires.
Favorite quote: "where ever u go, there u are"

Other car;
1971 plymouth Duster
Mods:340,edelbrock victor jr. intake, 650 4 barrel holley, heddman headers,40 series dual flowmasters, cold air intake,4:10 gears, just got a new paint job and cragar rims with 315 tires in the back.
:Yeah its not a chevy but damn how many 71' dusters have u seen in the streets.

 

Thanks guys for all the advice. I think I will go ahead and install the TES, sounds like I have nothing to lose and possibly alot to gain!

------------------
85 IROC,LB9,t-tops,hard loaded,black with red Lear-Siegler "Camaro" interior,MacEwen white guages,145 speedo,decal delete,91 Bose stereo,stage 2 Fastchip,AFPR,airfoil,K&Ns,March pulleys,alum. driveshaft&spare,92 police version 700r4.
On the list: BW 3.27 posi,89 PBR rear discs,140a police alt,coated TES,glass hood,aluminum front bumper brace

"Use overdrive for high speed pursuit"

 

Road Rocket - Not 100% sure, but I think you are supposed to boost up your fuel pressure to optimize the effectiveness of the headers. I seem to remember seeing that somewhere.

 

Headers are a complimant to other performance products, you wont see a big difference un less you have othere additives!!!!

 

I am just finishing up on slp 1 5/8" headers and y-pipe to existing dynomax cat back. Before with mostly free mods I went 14.7@98 on the g-tech. Along with the headers/y-pipe I installed MSD 6A, slp CAI, MSD coil and on the exact same stretch of road managed to run 14.1 @103 on the gtech. I'm just using it as a baseline and to monitor improvements - I'm not going to bother driving 2hr to the nearest track until I think I can run 13's once there.

------------------
89 formula, L98.