I am going to try to put in my 406 this winter. I presently have the edelbrock tes system. I know that these headers are supposedly crappy but does anyone have conclusive evidence? Who has gone really fast with these headers?

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1991 Firebird
350 L98 (was a 305 TBI),T-5,Edelbrock TES and cat back,Accel manifold
NOS,subframes,jegster torque arm,MSD Digital 6
AFPR,Lakewood lcas
Hurst linelock,SLP cam (206 212 .480 .486),relocated battery,cold air,Hypertech chip,centerforce df,clutch
poly bushings and mounts
AFR 190s
Harland sharp 1.5 rockers
autopower rollbar

12.33 @ 114.83 juiced uncorrected

13.510 @ 102 non juiced uncorrected

 

I have already ported the emmission tubes out.

 

I would guess that my car is only marginally faster than yours is right now..... It is likely a 13.0 - 13.2 car at this point, with some damn traction.... grrrrr......

I know a guy that has a Minirammed 350 with the TES, with the A.I.R pipes still on them, and runs 12.8x N/A.....

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1987 GTA L98 MD8
355, TFS Heads, LT4 Hot Cam
My GTA

The Minnesota F-body Club

 

https://www.thirdgen.org/messgboard/...ML/003212.html

 

Tas, what exactly was that link telling me.

 

Its telling you to get hooker 1-3/4 longtubes and mufflex Y pipe for that 406.

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-Tas
'89 Formula WS-6

305, TBI, 700R4, P.A.W. 14x3 open element with K&N, Milodon 160* thermo, functional Formula hood, cross-flow Flowmaster, '99z28 rear pipes and tips, Hooker 1-5/8" 50 state legal headers, Dynomax 3" I pipe (PN 44063 and 43248)
Super GRK_Taz World
F-Body Dual Exaust
EFI & Intake Options

 

Well, I am trying to do this on a budget. I know there are better headers out there. I just want to know how much pumping losses I am going to have.

 

anyone else?

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1991 Firebird
350 L98 (was a 305 TBI),T-5,Edelbrock TES and cat back,Accel manifold
NOS,subframes,jegster torque arm,MSD Digital 6
AFPR,Lakewood lcas
Hurst linelock,SLP cam (206 212 .480 .486),relocated battery,cold air,Hypertech chip,centerforce df,clutch
poly bushings and mounts
AFR 190s
Harland sharp 1.5 rockers
autopower rollbar

12.33 @ 114.83 juiced uncorrected

13.510 @ 102 non juiced uncorrected

 

The March 1998 issue of GM HIgh-Tech perfomance had a '91 z28 running 11.40's @ 116 mph n/a with 1 5/8 edelbrock shorties.

 

Wow! Imagine how fast it would be if it had real headers on it, instead of those 1 1/2" suckers. (the older ones are not really 1 5/8")

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1991 Camaro Z28
5.7L 5-Speed (originally 305)
317 RWHP, 418 RWTQ
13.23 @ 107.62 MPH (2.10 60')
Southern California
Member: SoCal 3rd Gen F-Bodies
Member: SoCal F-Bodies
-=ICON Motorsports=-

 

I picked up 2 tenths and a little over 1mph going from junk edelbrock headers to SLP 1-5/8" Tri-Y headers.....ON A 305!!! Please, dig a hole and bury those....don't put them on a 406!



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David Tuschhoff
1991 RS/Z28 Camaro
FI 355ci NA SBC V8 M5.
12.47 @ 110.7mph 1.80 60'
Best mph of 111.6.
My f-body page!

 

I want to bring this ttt.

 

If anyone has the Edelbrock's for sale, I'll buy them off you. I don't plan on going any bigger than my 89 LB9 305 so the edelbrocks will work nice. Let me know.

 

ttt