How is the ground clearance with these? I am trying to decide what of headers I want to go with. I had pacesetter headers on my old 95 lt1 z28 and they were fine. I want to keep this car mild and I may lower it a little bit so I was looking at midlength headers. Does anyone have pictures of these installed?

Thanks in advance.

 

dont waste your money. Just throw on a pair of 01-02 stock manifolds

 

My MAC mids with cats had about an inch more clearance than the QTPs w/cats I later switched to. BTW, Except a little on the top end, I felt no difference between the two.

Re'

 

mac's are good for lowered cars that would have clearance issues with LTs

 

Does anyone have any dyno numbers? Surely they are better than shorties and manifolds.

 

Yes, they will be better. But not much better than 01-02 manifolds. They actually flow pretty well. And they can be ported for even better flow.

 

Thanks. Do any aftermarket companies make an ORY for stock manifolds? Not sure if I would go that route but it would be a cheap and easy option. I just haven't decided if I want to do LT's again. I definitely don't look forward to the install.

I found some Y pipe options. Would you recommend the SLP one pr is the Borla one worth an extra 100$.

 

Yes, I have one made by Mac. I got it off a sponsor on here summer of '07. Definitely made a difference in gas mileage but not sure about the power. My car is sort of a factory freak...

 

Gas mileage is good also. This is my DD and I don't have any crazy plans for it. In the future I might but I will have to have a DD first. For now I will do basic bolt on mods. Like a lid, ORY, catback, underdrive pulley and ported TB.

I am going to have it tuned by a local guy as well.

 

I'm right there with you. I'm pretty happy with my setup. Especially for not putting much money into it.

 

MACs are a great street header. I picked up 18rwhp through the factory cats welded in the MAC Y-pipe (MAC cats are junk). The ground clearance is very good and the install was super-easy. I eventually replaced them with Hooker LTs when I went heads/cam, but would buy another set, preferable lightly used, for a street car.

 

Can't say that I agree with you. I gained plenty of HP and the weight difference is substantial. FWIW, GM went with the cast exhaust manifolds in 2000, the tubular ones are 1998-99 only.

 

Lay off of the retard sandwiches buddy...

 

there are guys on here lowered 1.8" and have longtubes... not sure which ones though but you might want to look into.

 

MACs are OK.
I ran them for awhile..I made 360 RWHP with a stock longblock (01 LS6 cam) & an LS6 intake.

Unfortunatly,I can't seem to even give them away..They're just sitting in my garage collecting dust.

 

check the "dyno" section. there are lots of guys making power with MAC mid lengths. on a 450rwhp H/C/I car the difference between MAC mid lengths and high quality long tubes is about 18rwhp or so from what i can find.

 

mac and bassani make an ORY for stock exhaust mani's

 

i've got mac's on my lowered ta, they came on mine otherwise i prolly would have went with LT's.

They're definetely not junk and the only clearance issues i have with is on tall speed bumps.

 

what are you talking about?

 

hey turbo time, interesting setup, any dyno numbers? also any more recent times run? that is a very similar setup to my car but i have an M6 so interesting to hear man