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Header Suggestions?

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Old 10-06-2012, 08:58 PM
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Car: 1987 IROC-Z & 1991 RS
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Header Suggestions?
I have an '87 IROC-Z 305 TPI that I want to buy headers for. I was wondering what type of headers would be the easiest to install with a stock y pipe. Also, what brand is the best and which will increase horsepower the most while still passing emissions? Thanks for the replies
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Old 10-07-2012, 06:43 AM
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Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
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Re: Header Suggestions?
Originally Posted by mcweens
I have an '87 IROC-Z 305 TPI that I want to buy headers for. I was wondering what type of headers would be the easiest to install with a stock y pipe. Also, what brand is the best and which will increase horsepower the most while still passing emissions? Thanks for the replies
As far as I know, there are no headers that will fit the stock Y-pipe (and since the Y is part of the restriction, why would you want to keep it). For best flow/performance, purchase headers and Y-pipe together. The board consensus to "best" appears to be Dyno Don's headers or Hooker 2055's.

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Old 10-07-2012, 02:06 PM
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Car: 1987 IROC-Z & 1991 RS
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Transmission: Both-700R4
Axle/Gears: IROC-3.23 & RS-4.10
Re: Header Suggestions?
ok thanks
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Old 10-07-2012, 03:09 PM
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Car: 91 Z28,64ImpalaSS4094spd,67 Galaxy
Engine: Dart 415Profiler hd,cmprlrs,Hlly750
Transmission: Built 700R4, 3200 stall
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Re: Header Suggestions?
Dyno Dons are the best IMO, but Hedman and Hooker make good kits for our cars....
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Old 10-07-2012, 08:16 PM
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Re: Header Suggestions?
I love my Dyno Dons.
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Old 10-08-2012, 10:32 AM
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Re: Header Suggestions?
PM me.
Attached Thumbnails Header Suggestions?-w-new_y-pipe.jpg  
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Old 10-08-2012, 12:39 PM
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Re: Header Suggestions?
Originally Posted by Dyno Don
PM me.
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Old 10-08-2012, 01:42 PM
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Re: Header Suggestions?
Originally Posted by watajob
Dyno Dons.



Used set of SLP is another option. Check out the classified section.
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Old 10-08-2012, 02:49 PM
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Car: 89 IROC Z28
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Re: Header Suggestions?
Originally Posted by mcweens
I have an '87 IROC-Z 305 TPI that I want to buy headers for. I was wondering what type of headers would be the easiest to install with a stock y pipe. Also, what brand is the best and which will increase horsepower the most while still passing emissions? Thanks for the replies
Headers with a stock y-pipe would be like pitting a band aide on a severed artery would help at all.
Dyno Don with his Y-pipe is the way to go, trust me.
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