New LS1 Owners - Newbie Tech - 2 sound questions (exhaust) (cam)
01-29-2010, 04:06 PM
1. I was wondering if anyone knows for sure if the type headers play much, if any role in the sound of the car? i have slp longtubes now and prolly are going to switch to kooks or ARH and wondering if the car will sound any noticably different?
2. obvoisly bigger cams sound different with their lope at idle.....but with there be much difference between a 222 cam and a 228 cam at WOT?
01-29-2010, 04:18 PM
I'm not sure about the cams, but Kooks headers seem to have a very distinct sound to them. That's half the reason why I bought mine, I had seen plenty of videos on youtube and every one with Kooks headers sounded totally badass. Apart from the sound you're probably going to pick up 5-10 hp going from the SLP to Kooks longtubes.
01-29-2010, 05:34 PM
nice man, yea i have the old style of slp's that hang down really low, and iv been extra careful but i have checked the payment and i have one dent on each side, prolly not costing a lot of power but i feel they might make the engine run a little unbalanced if two of the cylinders have slightly more back pressure than the other six, so one of these days when i have some extra cash i wanna get some top of the line headers and i love how my car sounds as it is (slp longtubes+catted y by slp, borla mid, and hooker CB) i just didnt know if when i got new headers if the car would sound the exact same or not....does anyone know if my slp mid pipe would fit either kooks, ARH or QTP bc i want to get one of those 3....also still looking for an answere for my 2nd question? also wondering if when i get comp or yella terra or harland sharp RR if i will get a crisper exhaust note (noticable) like they claim?
01-29-2010, 07:47 PM
Changing from one brand of LT headers to another, without any other engine or exhaust changes, won't make a huge difference in sound - especially if the primary tubes are the same diameter. There might be a small difference in some rpm ranges, but it's not going to be anything huge.
As for WOT sound difference between a 224 and 228 cam (everything else being equal), there might be some difference in volume but it'd only be noticeable with with a dB meter or something. Doubt that the human ear could notice such a small difference in volume under such already loud conditions.
01-29-2010, 10:42 PM
so the 222* to 228 cam would have ever-so minor decibal changes, and wouldnt at all have a different sound? thanks for the answere on the LT's, however im still wondering about the rockers?...thanks for the answeres thus far
01-29-2010, 11:15 PM
I agree with RPM on this one. I did a switch from 1 5/8 stepped primaries to a header with a solid 1 3/4 primary and the exhaust lost a lot of the midrange bark (and torque) and became more smooth and mellow sounding.
01-29-2010, 11:18 PM
so the 222* to 228 cam would have ever-so minor decibal changes, and wouldnt at all have a different sound?
Small changes in duration and/or lift won't have a huge effect on WOT sound. Again, there certainly may be an effect, but it's not going to be drastically noticeable to the human ear. Idle sound/quality, of course, is an entirely different story. But either of those cams will be louder than stock at WOT, because they offer considerably more lift and duration than stock, as part of their much more aggressive profile.
thanks for the answere on the LT's, however im still wondering about the rockers?...thanks for the answeres thus far
Rockers I have no clue on. I've never done a before-and-after test on any car with rockers being the only change. But, speaking in principle, if the rocker ratio is increased (thus increasing overall valve lift) it stands to reason that, if anything, the exhaust note should be a bit louder in response. Just as stated above though, how much louder, and whether or not a normal person can hear it, is questionable.
01-30-2010, 05:27 AM
Something to ponder...
01-31-2010, 01:35 PM