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LT1-LT4 Modifications 1993-97 Gen II Small Block V8

"Stepped" headers?

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Old Aug 29, 2007 | 10:25 PM
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Default "Stepped" headers?
What the eff are these. Someone was ranting about them in autozone, saying that they completely eliminate turbulance... watf?
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Old Aug 29, 2007 | 11:08 PM
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They use different sized primary pipes, difficult to explain. A search would yield results.
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Old Aug 29, 2007 | 11:34 PM
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it is a smaller diameter tube and at some point in the primary it "steps" up to a larger diameter tube to increase exhaust gas speed and scavenging. not too many out there for the lt1 though. kooks is all that comes to mind??
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Old Aug 30, 2007 | 12:18 AM
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They are available for the LSX, i have never seen them for LTx from JEGS/SUMMIT.
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Old Aug 30, 2007 | 12:20 AM
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Originally Posted by ZONES89RS
They are available for the LSX, i have never seen them for LTx from JEGS/SUMMIT.

You need to look at the big boy stuff Names like "Kooks" "Lemons" and such
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Old Aug 30, 2007 | 12:24 AM
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Originally Posted by TwoFast4Lv
You need to look at the big boy stuff Names like "Kooks" "Lemons" and such
Nope, the hooker headers i use for my 3rd gen are fine, big boy enough for me.
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Old Aug 30, 2007 | 12:48 AM
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Here are mine

Kooks LT1 1 3/4"-1 7/8" Stepped with 3.5" collectors



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Old Aug 30, 2007 | 12:54 AM
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Originally Posted by roadtrip120
Here are mine

Kooks LT1 1 3/4"-1 7/8" Stepped with 3.5" collectors


these are the only stepped headers as far as i know on the market for the lt1 that arent custom made by somewhere like lemons. we can sit here all day and argue whether the gain is worth it. to me the effects are seen most in high horsepower cars where you need increased flow and scavenging. regardless they are the nicest lt1 header on the market
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Old Aug 30, 2007 | 12:58 AM
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From: LT1 land...the "409" of the 90s!
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MAN! I am going to have to get a kool set of those one day
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Old Aug 30, 2007 | 01:10 AM
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Originally Posted by TwoFast4Lv
MAN! I am going to have to get a kool set of those one day
The best part about them is this


My Pace Setter Headers didn't have that. Its supposed to help out.
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Old Aug 30, 2007 | 02:57 AM
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Nice, i would never treat my daily driver to such a nice set though.
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Old Aug 30, 2007 | 03:39 AM
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That spire, I can image would help with turbulence quite a bit. Looks cool

Has anyone ever used the spiral inserts for headers?
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Old Aug 30, 2007 | 06:42 AM
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that piece in the collector is a nice piece of fabrication. i saw a guy do that when he built a set of equal length stainless headers for a 4.5liter lexus v8 in a 1980 corolla.
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Old Aug 30, 2007 | 07:35 AM
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I run the Hedman Hussler LT1 stepped long tube competition header. 1 3/4" stepped to 1 7/8" with 3 1/2" collectors.


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Old Aug 30, 2007 | 08:05 AM
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didn't dynatech make or used to make a set for LT1 as well?

I bought a set of PeteZ built stepped off Z8s recently (deciding what to run for new exhaust)

I was always told that a stepped setup wasn't a good choice if you weren't making big hp, big inch, far-from-stock
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Old Aug 30, 2007 | 10:23 AM
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Originally Posted by Tony Shepherd
I run the Hedman Hussler LT1 stepped long tube competition header. 1 3/4" stepped to 1 7/8" with 3 1/2" collectors.


What kind of intake is that???
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Old Aug 30, 2007 | 11:10 AM
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Originally Posted by ZONES89RS
What kind of intake is that???
It's the elbow used on a carb intake.
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Old Aug 30, 2007 | 11:52 AM
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I run the same headers as Shepherd posted.

They are plane nasty.

Tony.
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Old Aug 30, 2007 | 12:15 PM
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Originally Posted by ZONES89RS
What kind of intake is that???
Victor E intake manifold with a 100 degree PTE elbow sitting on top. Accufab 90mm throttle body bolted to it.
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Old Aug 30, 2007 | 12:21 PM
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Originally Posted by Tony Shepherd
Victor E intake manifold with a 100 degree PTE elbow sitting on top. Accufab 90mm throttle body bolted to it.
That is bad ***, i wish i could see your car in person, mad props to you, i like seing things done different.
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