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My 406 with long tubes and ground clearance.

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Old Oct 23, 2017 | 11:26 PM
  #1  
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Car: 89 Iroc street car
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My 406 with Ebay long tubes and ground clearance.

I have a 406 with ported vortec heads and a XR270 full roller cam. We felt we needed more than shorties with 1 5/8 primarys for this engine. So after talking with a Dutch guy on here I ordered a set of these stainless OBX Chinese headers off Ebay with 1 3/4 primarys. They go by a bunch of different names like OBX these were "DNA"s for $267. With a little bit of notching on the K member and new stock motor mounts they give great ground clearance

https://www.ebay.com/itm/39113146941...%3AMEBIDX%3AIT







Last edited by Dscott; Mar 4, 2019 at 09:18 PM.
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Old Oct 23, 2017 | 11:33 PM
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Car: 89 Iroc street car
Engine: Fitech vortec 400sbc/T5
Transmission: Also 69 Chevelle, Nascar chassis
Axle/Gears: 700hp roadrace track day car
Re: My 406 with long tubes and ground clearance.

I run a WC T5 for now. For collector clearance my guy cut off the ear on the bell housing and installed this Howe hyd throw out bearing

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Old Oct 23, 2017 | 11:37 PM
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Car: 89 Iroc street car
Engine: Fitech vortec 400sbc/T5
Transmission: Also 69 Chevelle, Nascar chassis
Axle/Gears: 700hp roadrace track day car
Re: My 406 with long tubes and ground clearance.

He then fabbed a custom cross member.


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Old Oct 23, 2017 | 11:42 PM
  #4  
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From: whitby ontario
Car: 89 Iroc street car
Engine: Fitech vortec 400sbc/T5
Transmission: Also 69 Chevelle, Nascar chassis
Axle/Gears: 700hp roadrace track day car
Re: My 406 with long tubes and ground clearance.

He cut the 2.5" collectors off. Those are dual 3" Magnaflow cats and the start of the 3" Y pipe.


Last edited by Dscott; Oct 24, 2017 at 12:20 AM.
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Old Oct 23, 2017 | 11:50 PM
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Car: 89 Iroc street car
Engine: Fitech vortec 400sbc/T5
Transmission: Also 69 Chevelle, Nascar chassis
Axle/Gears: 700hp roadrace track day car
Re: My 406 with long tubes and ground clearance.

There is the rest of the system. The 3" Y with dual 3" Magnaflow cats then 3.5" all the way to the muffler which is a Spintech 3.5" in with dual 3" out and 4" tips. Yes I know you can make more power with a straight through muffler but I wanted dual tips





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Old Oct 23, 2017 | 11:54 PM
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From: whitby ontario
Car: 89 Iroc street car
Engine: Fitech vortec 400sbc/T5
Transmission: Also 69 Chevelle, Nascar chassis
Axle/Gears: 700hp roadrace track day car
Re: My 406 with long tubes and ground clearance.

This is the lowest part of the system, back by the rearend. That cup is 4.5" high. The car has original (somewhat sacked?) stock springs.

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Old Oct 23, 2017 | 11:57 PM
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From: whitby ontario
Car: 89 Iroc street car
Engine: Fitech vortec 400sbc/T5
Transmission: Also 69 Chevelle, Nascar chassis
Axle/Gears: 700hp roadrace track day car
Re: My 406 with long tubes and ground clearance.

Heres a pic on the car.

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Old Oct 24, 2017 | 12:02 AM
  #8  
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From: whitby ontario
Car: 89 Iroc street car
Engine: Fitech vortec 400sbc/T5
Transmission: Also 69 Chevelle, Nascar chassis
Axle/Gears: 700hp roadrace track day car
Re: My 406 with long tubes and ground clearance.

Here's a Youtube vid. Many thanks to Vic at Schmitt tuning north of Toronto for his hard work and vision. The Fitech has had no time to self tune. That is def water coming out of the pipes.




Last edited by Dscott; Oct 24, 2017 at 12:12 AM.
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Old Oct 30, 2017 | 09:46 AM
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Transmission: WC T5 w/ Steel Support Plate
Axle/Gears: 3.42 10 Bolt Posi
Re: My 406 with long tubes and ground clearance.

Sounds angry, what is shooting out those tail pipes
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Old Oct 31, 2017 | 07:27 AM
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Re: My 406 with long tubes and ground clearance.

Looks and sounds good. I have the same headers waiting to go in myself. I am running a TH350 trans, so hopefully the install will be a bit easier over the T5.
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Old Mar 4, 2019 | 09:24 PM
  #11  
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Car: 89 Iroc street car
Engine: Fitech vortec 400sbc/T5
Transmission: Also 69 Chevelle, Nascar chassis
Axle/Gears: 700hp roadrace track day car
Re: My 406 with long tubes and ground clearance.

ttt
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Old Mar 7, 2019 | 11:36 AM
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Re: My 406 with long tubes and ground clearance.

This is good to know as I've been thinking about these same headers



Originally Posted by Dscott
This is the lowest part of the system, back by the rearend. That cup is 4.5" high. The car has original (somewhat sacked?) stock springs.

DSCOTT that looks good enough rear clearance as long as you stop picking up all those fat chicks

really though thanks for the pics ground clearance was/is a big peeve of mine
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Old Feb 27, 2020 | 08:54 AM
  #13  
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Car: 89 Iroc street car
Engine: Fitech vortec 400sbc/T5
Transmission: Also 69 Chevelle, Nascar chassis
Axle/Gears: 700hp roadrace track day car
Re: My 406 with long tubes and ground clearance.

TTT
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Old Feb 27, 2020 | 11:19 AM
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Re: My 406 with long tubes and ground clearance.

Originally Posted by Dscott
TTT

why do you keep doing "TTT" ?
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Old Feb 27, 2020 | 01:16 PM
  #15  
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Re: My 406 with long tubes and ground clearance.

although this is not all there is to it, the ground clearance is pretty impressive, especially for a 1.75" long tube.... any rattles or thumping?
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Old Jul 28, 2020 | 12:13 AM
  #16  
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From: whitby ontario
Car: 89 Iroc street car
Engine: Fitech vortec 400sbc/T5
Transmission: Also 69 Chevelle, Nascar chassis
Axle/Gears: 700hp roadrace track day car
Re: My 406 with long tubes and ground clearance.

Originally Posted by 427seven
although this is not all there is to it, the ground clearance is pretty impressive, especially for a 1.75" long tube.... any rattles or thumping?
there was some thumping but I tracked it down to the right side tailpipe after the muffler
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Old Jul 28, 2020 | 06:59 AM
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Axle/Gears: 3.73
Re: My 406 with long tubes and ground clearance.

Are you still running the FITech unit? if so, how do you like it?
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