1 7/8 AR Headers on a lightly modded ls1
Do you know what his ultimate goal is? Have a plan to meet your goals.
When a giant douchebag like you makes it as an LS1tech sponsor, it's comforting to add someone from my list of places I'll never buy from. It makes the decision easier at purchasing time. Sorry to see your poor publicity hurts the company, though. Your mouth's a pretty big liability.
I've been agreeing with Tony Mamo since page one of the original thread. Glad to see I was right.
This is your level of expertise
SLP| Corsa |QTP|Magnaflow|Richmond| FastToys|MSD|NGK|Inland Empire|
from a v6 Camaro.
Mamo and I have worked together in the past. Guess what, we ran a stepped to 1 7/8 header on my 347 with his massaged 205's and ported fast 90. Stepped headers have a place.
This is your level of expertise
SLP| Corsa |QTP|Magnaflow|Richmond| FastToys|MSD|NGK|Inland Empire|
from a v6 Camaro.
Mamo and I have worked together in the past. Guess what, we ran a stepped to 1 7/8 header on my 347 with his massaged 205's and ported fast 90. Stepped headers have a place.
I forgot, you have to have wasted $25,000 of mods into a car before you're allowed to comment on them.
There are two things I have behind me that you have yet to show in this thread: deductive reasoning and common sense. I'm extremely savvy when it comes to purchasing, and I'm quite adept at research. Someone like you has to try and fail 10 times before you figure out the right way to do things, spending tons of money in the process. I, on the other hand, tend to do it right the first time because I know what I'm getting into beforehand.
Spending 10 minutes on the phone with Tony Mamo 3 different times does not mean you have "worked together," either. I have great respect for Tony Mamo because he has expertise, common sense and intelligence. He knows what he's talking about. I have as much confidence in your judgment as I have in China's honesty.
LMAO!! Your an idiot.
You dont have my money and you have no clue what I've been up to. I've had 3 different things built and run many different combos. Learned a few things along the way, sold everything and bought new. Now I'm to the point where I'm a sponsor and going to be offering a special package of my own.
What have you done? Spoke to couple vendors ? done a bunch of reading on here got educated from peoples opinions?
There are talkers and there are do'ers. I've done more than you've talked about.
retort all you want, your opinion on here means nothing to anyone who knows what they're doing. I'm out of this thread, Taco has you covered LMFAO!
Also dont drag Tony down with you. When you buy something from Tony Mamo he spends one hell of a lot more time of the phone with you. He is meticulous and makes sure no detail is left un-covered. 10 minute phone calls do not happen with Tony. His far to thorough.
Last edited by 99blancoSS; Apr 12, 2008 at 11:51 AM.


I forgot, you have to have wasted $25,000 of mods into a car before you're allowed to comment on them.
There are two things I have behind me that you have yet to show in this thread: deductive reasoning and common sense. I'm extremely savvy when it comes to purchasing, and I'm quite adept at research. Someone like you has to try and fail 10 times before you figure out the right way to do things, spending tons of money in the process. I, on the other hand, tend to do it right the first time because I know what I'm getting into beforehand.
Spending 10 minutes on the phone with Tony Mamo 3 different times does not mean you have "worked together," either. I have great respect for Tony Mamo because he has expertise, common sense and intelligence. He knows what he's talking about. I have as much confidence in your judgment as I have in China's honesty.
I'm research savvy enough to see that any thread where AR headers are mentioned....Choco bashes. Bottom line ARH>QTP. The issue on header tube diameter is so controversial that there will never be complete agreement....but i'm gonna stick with my 1 7/8".
The Best V8 Stories One Small Block at Time
I'm research savvy enough to see that any thread where AR headers are mentioned....Choco bashes. Bottom line ARH>QTP. The issue on header tube diameter is so controversial that there will never be complete agreement....but i'm gonna stick with my 1 7/8".
Some people are do-ers, others are talkers. I personally would like to invite Choco-talka to have a sexual departure.
You can see the results, no ill effects at all - HP, TQ, or the curve. When you factor in the heavier wheels, that points to an actual gain at the flywheel. I'd have to remove and redyno with the 17x9s for us to see what that delta is. When choco was challenged regarding this issue specifcally, to put his money where his mouth is, he didn't...and won't.
Yes, I should have swapped the wheels, but it was a long day.
My test didn't address the 1 3/4 at all but did address "big vs. small". Some would say "appropriate vs. overkill". My opinion? I would go 1 7/8 if you plan on bigger cubes, otherwise it might be optimal with the 1 3/4. It did show that with tuning, you will not LOSE anything with the big tubes, likely will gain a small amount, at least over the very decent MACs, plus you bought once and bought right.
It was worth it to me, since I plan to keep the car. At the end of the day, I hope it was helpful.
I'm research savvy enough to see that any thread where AR headers are mentioned....Choco bashes. Bottom line ARH>QTP. The issue on header tube diameter is so controversial that there will never be complete agreement....but i'm gonna stick with my 1 7/8".
Mack got the answer he was looking for and can make his personal decision with more info - and that was the point.
I'm contemplating another dyno to see what the wheels cost me but if I am going to spend the dyno/tuning time, I may as well put a Fast combo on there, shoot I need new injectors too. I mean "While I'm in there..."
Last edited by jmilz28; Apr 14, 2008 at 11:40 AM.
http://www.edelbrock.com/automotive_...ers_race.shtml
http://store.summitracing.com/partde...5&autoview=sku
https://ls1tech.com/forums/showthrea...ighlight=1+7/8
oh and,
Thats from a movie. -2 to creativity.
Wouldn't a 1-7/8" header work better with ported heads and a good sized cam - say 240+ duration if you were running a 4000+ stall with a shift extension in the 5700~5800 range with a 6900 RPM shift point?
I mean, WOT, you'll never be anywhere close to where a 1-3/4" header will outpower a 1-7/8" header. Of course, part throttle tip-in will be affected, but in a high stall car, the torque converter controls the feel more than headers.
Also, according to David Vizard, you should go with primary tubes depending on the exahust flow of your heads. Most aftermarket castings flow so high, 1-7/8" headers are considering "optimal" by Vizard's testing.
Wouldn't a 1-7/8" header work better with ported heads and a good sized cam - say 240+ duration if you were running a 4000+ stall with a shift extension in the 5700~5800 range with a 6900 RPM shift point?
I mean, WOT, you'll never be anywhere close to where a 1-3/4" header will outpower a 1-7/8" header. Of course, part throttle tip-in will be affected, but in a high stall car, the torque converter controls the feel more than headers.
Also, according to David Vizard, you should go with primary tubes depending on the exahust flow of your heads. Most aftermarket castings flow so high, 1-7/8" headers are considering "optimal" by Vizard's testing.
You should be fine with the 1-7/8 header with the above combo with room to grow before you would need to go any bigger








