MAC Headers, How good are they????
Thread Starter
Launching!
Joined: Dec 2001
Posts: 252
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From: Maxell AFB, AL
MAC Headers, How good are they???? I will be ordering A set when I get back from vacation, and wandering how good they are, and how much RWHP I can epect to gain from them with my mods?
<img src="graemlins/gr_guns.gif" border="0" alt="[guns]" /> <img src="graemlins/camaro.gif" border="0" alt="[Chevrolet]" />
<img src="graemlins/gr_guns.gif" border="0" alt="[guns]" /> <img src="graemlins/camaro.gif" border="0" alt="[Chevrolet]" />
Re: MAC Headers, How good are they???? I think 15 to 20 rwhp is pretty typical.
If you mod the MAC's and run ORP instead of cats you might bet 25rwhp or so
However if tuning issues occur like running rich you might not really get anything until the car is tuned.
If you mod the MAC's and run ORP instead of cats you might bet 25rwhp or so
However if tuning issues occur like running rich you might not really get anything until the car is tuned.
I can shift faster than you.
iTrader: (21)
Joined: Nov 2001
Posts: 5,133
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From: Baton Rouge, LA
Re: MAC Headers, How good are they???? I was using the MACs w/ off-road a year ago and really liked them. You can't beat them for the money. Here is what I gained w/ the MACs. I also had the flowmaster 3" collector mod done and ported the primaries.
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www.geocities.com/jason99ta1/header_dyno.jpg
[ December 29, 2001: Message edited by: Jason99T/A ]</p>
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[ December 29, 2001: Message edited by: Jason99T/A ]</p>
TECH Junkie
Joined: Nov 2001
Posts: 3,987
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From: Melbourne, FL
Re: MAC Headers, How good are they???? I had MAC's on my car for a looong time before I switched to the Dynatech's. On a mild setup, they seem like the hot ticket, especially for the money. My headers fit well, but the y-pipe (off-road) did leave a little to be desired.
I eventually ended up cutting off the MAC ball-flange collector end to convert the collector to a true 3" opening, and just running 3" Moroso spiral-flow mufflers/dumps...
I eventually ended up cutting off the MAC ball-flange collector end to convert the collector to a true 3" opening, and just running 3" Moroso spiral-flow mufflers/dumps...
