DGageSS

iTrader: (9)

1 3/4's are fine but obviously 1 7/8 will give you more, but on stock cubes i would do 1 3/4

BackinBlack02SS

iTrader: (7)

Header primary size is one of the most overhyped topics on the internet. The cup guys are using the same size tubes on their 440 hp restrictor plate engines as their 850+ hp unrestricted stuff. There are much more important things to focus on.

2002_z28_m6

iTrader: (10)

Choco I have a $1700 head/cam combo and make around 100 more rwhp more than you. You say thats not impressive??????? Oh thats right I dont have QTP's so my car sucks.

I ran a 13.0 @ 110 with a lid,ported tb and hooker catback.
I added a set of ARH headers and ran a 12.75 @ 113 (stock tune) stock 245/50/16 goodyears
H/C 12.4 at 119 All times with 60' of 2.1-2.2's all on stock tires.

Hey Choco you might have a better chance against my GTP.

Sammyboy

iTrader: (9)

1 3/4...is my vote...I have qtp's and love them.

ChocoTaco369

You make 100rwhp more than me and you're in the 12's? Very impressive I have zero interest in a H/C package. I don't want more power. I drive my car two days a month if that. I have put 2,000-3,000 miles on my headers since I installed them over 14 months ago. I go to the track maybe once or twice a year if I even make it at all. I don't really care about numbers or timeslips. I only care about how it behaves on the street, how it looks, how it sounds and its fuel efficiency. I have no interest in anything more than full exhaust, intake and a tune. That's why it's all I have. I can count on two hands the number of times I've gotten into a street race. Not everyone needs to dump thousands upon thousands of dollars into their cars to feel validated. Don't forget that.

the_merv

iTrader: (88)

With the same trap speed that I had running my 11.19 pass..

You say that you don't care to invest alot into your ride, then brag about how it will smoke everything or how other people's setup's arent good.

Mine looks like **** and runs low 11's..you wouldn't think by looking at it, you don't hear me telling people that I don't care about how theirs looks..

There is no need to be bashing on anyone's ride..you do what you do with yours, and you are happy, and we all do what we do with ours. I don't feel validated by the money I have in it, I feel happy when I beat the hell out of someone and leave them with a priceless WTF look on their face.
That makes me happy cause it's something that I built with my hands, nothing bought assembled in my Car..

How bout we stop taking worthless shots at each other..don't talk your car up if you don't have it setup or even care to run it..

KCFormula

iTrader: (4)

I know guys running 9's NA with 1-5/8" headers. This is a pretty stupid argument.

ChocoTaco369

What are you talking about man? I don't want anymore power. This has NOTHING to do with me wanting to be faster than anything. It's only about trying to talk common sense into people who can't seem to get off of the "bigger is better" kick. It's NOT true. Some people only respond if you threaten them with someone on the internet being faster than you. If people would open their minds up and get off the "the part is better because I own it" kick, it wouldn't have to come to that. People are brand-loyal. It's fine to support a brand that you've had great success with but when you start imposing it on others, it starts becoming a problem. I have given good feedback to parts I have bought but I've never told anyone to buy anything without reason. It's YOUR car, not mine. The only thing I'll ever give you as a conditional recommendation - condition being it's just my opinion, so take it for what it's worth.

The fact is, 1 3/4" headers are better for a 346ci LS1 in almost every case. If you don't want to believe that, fine. It's your loss. I've done all I can.

So? I don't think your car looks like ****. I don't see where you're going with this. All that matters is that you're happy with what you drive.

But that's the exact point I'm trying to make. I don't care if I'm faster than people. That's not what I'm about. The problem is, a lot of people on this site DO care and there is too much inaccurate info in this thread. Bigger ain't always better my man. With a 346ci LS1, that's true in almost every case.

Fine by me You're misinterpreting my intentions.

the_merv

iTrader: (88)

I think the main arguement against that is that there is proven results that them bigger Headers DO make more poer over the 1 3/4 for the LS1's..

ChocoTaco369

Mmm...no there's not. That's the point. In fact, if there is a 3rwhp gain up top and you lose 20rwtq down low, you have a significant loss. Most people have street cars. Low end and midrange is just as important as a gain up top small enough to constitute dyno error or varying ambient conditions. Maybe a large FI, nitrous or stroked LS1. Not a 346 in most applications.

the_merv

iTrader: (88)

I'm interested on how they would do on my 402 with the L92 Heads. I'm thinking about getting Headwork done to open up the Exhaust a little more, and use them Headers to see what type of gain it would pull. Then combine that with a Victor Jr. Intake to open up the Intake and get more RPM's..

ChocoTaco369

On a stroked, high RPM motor, the 1 7/8" headers are a no-brainer. My argument is only based on NA 346ci LS1's. I'm sure you'd pick up some power going for larger primaries, though there are plenty of people on this site in the 9's and 10's with 1 3/4" headers.

2002_z28_m6

iTrader: (10)

I dont believe there is a 20 ft-lb loss down low. I could see five or less but not 20. Nobody has posted a same header comparison on here so thats just your guestimate. Not a fact.

jam01

hey choco, you may as well give up on this fight. i do agree with you and your point, but until you get a dyno nobody will believe. but also this guy is also going to be upgrading so it may do him better with the 1 7/8 headers. like the saying goes opinions are like a--h--e's everybody has one.

ChocoTaco369

It's really hard to guess because most dynos pick up at 3,000 to 3,500 rpm's. Under 3,000 rpm's is where 1 3/4" headers will shine. I don't think there are really many numbers out there because, simply put, dynos don't really ever show low end power.
You're definitely right. I just hate the "bigger is better" attitude sometimes. It can really be misleading.

BackinBlack02SS

iTrader: (7)

Since when does power under 3,000 rpm matter? We're not discussing diesels here. When you race, you will never see rpm that low anyways. There is a reason why you dont see 1500 rpm dyno pulls. IT'S POINTLESS!

ChocoTaco369

It might have to do with street cars spending 99% of their time under 3,000 rpm's. It could have something to do with the overwhelming majority of people on this site spending way more time on the street than at the track. I care about power all over the curve, not just above 5,000 rpm's. I believe that there are many others who believe that as well.

BackinBlack02SS

iTrader: (7)

If you're gonna be puttin around on the streets off idle, then power shouldnt be a concern in the first place

jam01

you make no sense at all, just because someone isnt laying a patch of rubber at each stoplight. doesnt mean they dont like the feel, or just knowing that they have the power available. you build your car for what you want, not for everybody else.

ChocoTaco369

So when you're roll racing from 40 mph in an A4 and at WOT, you fall right into that huge dead spot, that low end won't help, right? Just like the low end won't hurt get you through first gear. Or help 60 foot times. Or aid in driveability. Or increase efficiency...