Got wrong headers in mail, 1 7/8 instead of 1 3/4
REALLY? This debate is still going on. You guys keep talking about this theory crap, without realizing that theories are just that... theories. They are meant to be proven or dis-proven. Once it is proven you move on, or if it is dis-proven you adjust the theory and try again with your testing. It has been seen over and over that 1-7/8 headers are worth it even on stock displacement. So theory dis-proven. Now, if you put a 2 inch primary header on a 346, yes you might see a reduction in exhaust scavenging and velocities. The idea does have merit and I know where you guys are coming from but you just can't argue with the fact's. Then search, why should we do your work for you?
You want to show me where that statement holds true? I'm looking for real world evidence, not theories.
Did you not read my post?
7/8s pick up power everywhere VS 3/4.. I would assume under 3K RPMs there might be a trade off but do you really think that is going to be noticed? Let alone have to be made up at the track?
They make more power everywhere that matters and will make any stock 346-454 stroker run faster MPHs and quicker ETs, period.
Yes, because whens the power coming in at.What rpm?You could be losing with the bigger headers on his car,in the lower rpm's.Sure he will get the power back up top but will it be enough to make up what he lost down low,say 0-60 or 1/4 mile times.And I'm only saying the op's car.Sure if you have a stoker or a bigger built motor than the bigger headers will help you down low.Just saying I would'nt say it's good that he got the bigger ones unless I new for sure.It all depends on what he's running for the rest of his exhaust system too.
Dyno results show people picking up power everywhere in the curve, impossible not to ET and MPH better with them.
They make more power everywhere that matters and will make any stock 346-454 stroker run faster MPHs and quicker ETs, period.
You stick to theory based modding... ill stick to doing it the way it works best.
Do you also believe a bone stock ls1 would gain more from a 3000 converter vs a 4400?
TECH Junkie
Joined: Dec 2005
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"Do you understand the effects your nonsense has on people's ability to understand simple facts and logic?"
No problem. Carry on.
"You stick to theory based modding... ill stick to doing it the way it works best"
No question dyno results are the best indicator. All I am discussing is why getting the exhaust velocity correct will make the most horsepower across the board. But I can see there is no need to go further with the discussion.
As to the torque converter and off topic. It should be around 500-600 rpm below the peak torque of the motor for best 1/4 mile performance.
No problem. Carry on.
"You stick to theory based modding... ill stick to doing it the way it works best"
No question dyno results are the best indicator. All I am discussing is why getting the exhaust velocity correct will make the most horsepower across the board. But I can see there is no need to go further with the discussion.
As to the torque converter and off topic. It should be around 500-600 rpm below the peak torque of the motor for best 1/4 mile performance.
Thread Starter
12 Second Club
Joined: Dec 2008
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From: Richmond,VA
the headers and kooks ory are on now. its running into a magnaflow bullet style muffler instead of the slp lm2 that was on it. all the piping is 3" from header collector to tips. the tone is deeper now which is good but it is a little raspy, kinda reminds me of a old tractor, sounds good except from a little bit of rasp. could the rasp be coming from the shitty merge from the kooks y pipe cause there isnt even a collector on the y, just a pipe welded to the side of the other one
the rasp could be from the merge, but more likely its from the lack of cats and the bullet style muffler. if you smoothed out the merge and got a true muffler it would probably help but then again some kind of cats also would
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the headers and kooks ory are on now. its running into a magnaflow bullet style muffler instead of the slp lm2 that was on it. all the piping is 3" from header collector to tips. the tone is deeper now which is good but it is a little raspy, kinda reminds me of a old tractor, sounds good except from a little bit of rasp. could the rasp be coming from the shitty merge from the kooks y pipe cause there isnt even a collector on the y, just a pipe welded to the side of the other one
TECH Junkie
Joined: Dec 2005
Posts: 3,092
Likes: 11
"Quote:
Originally Posted by 1989GTA
As to the torque converter and off topic. It should be around 500-600 rpm below the peak torque of the motor for best 1/4 mile performance.
I would also like to see real world results of this... What exact size would result in the best 1/4 performance with a bone stock ls1 using this? "
Your are drifting from the thread. What I would like to see is the results of 1 3/4" - 1 7/8" stepped headers. They may give the best results and the best of both worlds.
Originally Posted by 1989GTA
As to the torque converter and off topic. It should be around 500-600 rpm below the peak torque of the motor for best 1/4 mile performance.
I would also like to see real world results of this... What exact size would result in the best 1/4 performance with a bone stock ls1 using this? "
Your are drifting from the thread. What I would like to see is the results of 1 3/4" - 1 7/8" stepped headers. They may give the best results and the best of both worlds.
Seriously? It's been two days! I make a dumb *** comment like this and no one bites? Man, y'all are slipping around here. I knew for sure with all the arguing over the 1 7/8--1 3/4 some one would've jumped all over me. I'm sad.
It made me laugh.
