Dynatech Stepped header results.
Thread Starter
TECH Fanatic
Joined: Nov 2001
Posts: 1,497
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From: Katy, TX
Dynatech Stepped header results. Finally got a chance to dyno the new headers.
For those that weren't following the other threads. These are a prototype set of the new Dynatech headers. These headers are a stepped header. no egr or air provisions with slip on collectors. ( very sweet I must add ).
The headers were installed, and a custom dual 3" into a single flowmaster 3.5" collector was installed behind the headers.
What were they being compared to? My old MACS. These were highly ported MAC headers ( ported at the flanges, and and at the header collector. The header collector was opened up with a 3-bolt header flange, and the MAC y-pipe was modified with 3" to 2.5 inch conical reducers to match the headers, and a flomaster dual 2.5" to single 3" flowmaster collector at the far end. Pretty good flowing setup for the MACS
The dyno results listed below show one of the first pulls with the MACS, against one of the two pulls we made with the new setup.
Pretty broad increase across the curve.
pain-dynatech.jpg
For those that weren't following the other threads. These are a prototype set of the new Dynatech headers. These headers are a stepped header. no egr or air provisions with slip on collectors. ( very sweet I must add ).
The headers were installed, and a custom dual 3" into a single flowmaster 3.5" collector was installed behind the headers.
What were they being compared to? My old MACS. These were highly ported MAC headers ( ported at the flanges, and and at the header collector. The header collector was opened up with a 3-bolt header flange, and the MAC y-pipe was modified with 3" to 2.5 inch conical reducers to match the headers, and a flomaster dual 2.5" to single 3" flowmaster collector at the far end. Pretty good flowing setup for the MACS
The dyno results listed below show one of the first pulls with the MACS, against one of the two pulls we made with the new setup.
Pretty broad increase across the curve.
pain-dynatech.jpg
TECH Enthusiast
Joined: Nov 2001
Posts: 623
Likes: 0
From: Houston / Dallas
Re: Dynatech Stepped header results. Nice gains! <img src="gr_eek2.gif" border="0">
The streets of Houston are becoming much more dangerous for little ol' heads and cam cars like mine <img src="graemlins/gr_devil.gif" border="0" alt="[devil]" />
The streets of Houston are becoming much more dangerous for little ol' heads and cam cars like mine <img src="graemlins/gr_devil.gif" border="0" alt="[devil]" />
Re: Dynatech Stepped header results. How did the graph compare below 4500? If the low end is within 10 hp at 2k rpms then it's definitely a fair trade for 20 up top. Any chance of the step being made by FLP (or by dynatech) in emissions legal format? Seems like they have a winner on their hands.
John
John
