BAD2000TA

iTrader: (6)

Yeah, that's what I've been researching. There are some good gains, but nothing crazy. My biggest issue is that the decent cams only make power above 4,000 rpm, but the torque is terrible at 2000; below 200 pounds. Right now, her car has 250+ 2000 rpm and above. Don't want to give up that much torque, as this isn't a drag car. VT Stage 2 or Crower Stage 2's look good. She's also wants a nice lope at idle. So, I keep researching.

If anybody has any Mod Motor experience with cams, let me know. Thanks!

Brian

Midnight02

iTrader: (8)

As much as I love my LS1 and the sound of one with Long-tube headers, ORY and a cutout, I like the sound of a Mustang with full exhaust even better. Slap headers, an off-road H-pipe and 2 chamber Flowmasters on a 5.0 or 4.6 and (while it might be no where close to being the fastest thing on the road) it will sound absolutely freaking nasty!

I always thought it was funny hearing some of the modded 5.0's in the late 80's, early 90's.....many struggled to run a low 14-second 1/4 mile, however the sounded sweet running through the gears!

N2OGTO

So what you're saying is he swapped a 5.0 to a 5.0 and it sounded the same with the same exhaust??? Well god damn, would have never knew that if it wasn't for your insightful post...

Or, do you mean that the non H.O version had the 1-5-4-2-6-3-7-8 firing order???

Marc 85Z28

iTrader: (8)

The HO motors had a different firing order than the non-HO motors...

yzblue125

Mustangs Sound Like Sport cars.......LS1's sound Like Race cars!!!!!!!

Thule

first when the ls1 F bodys started to hit the roads i didn't like the sound of it.. thougth it hadn't enough bass and muscle car sound, but now i kinda love it.. it sounds like nothing else and with exhaust its realy brutal.. when i installed my loudmouth peaople stared at my when i was driving..

vut the stangs have always sounded good in my opinion..

900hpSS

the other thing i left out was that the car would buck if you were just cruizing around. it didn't do it all the time only between 1500-1700 rpm. and only if you were just putting around. if you had your foot in it it was fine. i think this was just because cams are mad for higher rpm and this was basicly just off idle. i had the car idle at 1000 rpm because any lower and the motor would shake prety bad. I had a programer that was sent to me by a company that does performance work on mustangs and they had preloaded it with the computer upgrade but I should have had the car dyno tuned. I wonder if the car was tuned if that bucking would have gone away? it clearly needed more fuel than the programer gave it. it smelled hot. not sure if it would have needed a bigger fuel pump sometimes guys would switch the mustang fuel pump for the focus fuel pump because it flows more fuel. just some thing to keep in mind.

Blackboosted2

Some of you reffered to my old setup, I had it made for my LS1 RX7

True Dual 3" w/H pipe exhauast, no cats
Dual 40 series flowmasters

See idle video with 'mufflers'
http://www.indyhpmedia.com/index.php...BlackBoosted2/

I wouldn't say it made the LS1 sound like a mustang, but it sounded good. There are a few local mod motor cars that sound better than any LS1 i've heard

RocketCutlass

Block material, cylinder head port design, fireing order, combustion chamber size and shape, valve size, compression, exhaust, intake design, engine design, cam specs, should i keep going? all those factors affect the way an engine sounds. Buick, Olds, Pontiac, and Chevy, all made SB 350's and BB 400's, don't remember if the pontiac 400 was considered a bb? anyway, because of their different designs they all sound different, even with the same exhaust systems. Ford didn't plan for their modular motors to sound that way. They just got lucky. GM never puts any thought into how a motor is gonna sound when they design one either, it more or less just happens, to put it simply. The true art in "sound fabrication" is what GM did with the new gto when it first came out. Managing to take a motor that was completly unrelated to the 389's that were makin the sound they were after and damn near accomplishing it through exhaust system tuning alone. That's pretty damn impressive to me, i can't even imagine the hours that went into that alone.

1qkws6

I've read all of your replies and I think I figured it out, ford spent the time to develope their sound and GM spent the time to make it fast, maybe that is why they aren't made anymore because there were too many pussies worried about sound and not how fast their car is. Mine sounds just fine all stock passing you at triple digits.

TransAm_00

iTrader: (1)

Is there anyone out there with any vids of Ls1s F-Bods that sound similar to a Stang?

ChocoTaco369

lol, you're speaking of rasp. the LS1 is definitely the raspier motor. when GM designed the LS1, they designed a hell of a performer, but they didn't put too much thought into sound. LS1's sound alright, but they're no 4V 4.6L or 5.0.

you guys are putting way too much thought into this. block type is a moot point. stroke is a moot point. mufflers are a moot point. yes, they all influence the sound, but if you took an LS1 and somehow gave it the same firing order as a mustang and strapped an H-pipe with 2 super 40's on it, i can guarantee you it would sound almost the same as the classic mustang sound. firing order is the overwhelmingly biggest influence on sound. why do you think ferrari's and lamborghini's sound like they do? similar firing orders.

if i had to pull numbers out of my butt, i'd say sound has to do 65% firing order, 25% muffler and 10% everything else. that's my opinion.

does anyone know how to screw with an engine and change its firing order (yes, i realize this would take huge alterations in design)? is it even possible? it would be a hell of a thing if we could take an LS1 and find a way to give it the exact same firing order as a 5.0 mustang to see how the sound would change. is this possible? because that would be AWESOME!

Marc 85Z28

iTrader: (8)

Does anyone here realize that the Ford V8s and the LS1 have THE SAME FIRING ORDER!?

97SUPERFORMY

modular engine. and yes they do have a nice sound, but nothing to a t-rexed ls1. and rocketcutless, the 400 was considered a bb, in the 70's car, im pretty sure.

ChocoTaco369

no they don't..

LS1 firing order: 1-8-7-2-6-5-4-3
Ford 5.0 firing order: 1-3-7-2-6-5-4-8
Ford 4.6 firing order: 1-3-7-2-6-5-4-8

the 4.6 and 5.0 have the SAME FIRING ORDER! that is why they sound so similar, despite the fact the 4.6 is a mod motor, smaller in displacement and a completely different design. this is because firing order is almost entirely reponsible for the sound an engine makes!

like i said, if you want your LS1 to sound like a mustang, figure out how to make its firing order the same. that would be interesting

PWORLDSTANG

... Lol.


There's been some good posts in this thread. A few of you guys said it already, but our sound comes from our overall engine design. This includes the the heads, block material, firing order, number of valves, etc. Also, our exhaust set up as a whole contributes to the sound. A lot of people, like me, are **** about how our exhaust sounds. Sometimes it will take months before someone will decide on an exhaust set up to run on their stang.

Marc 85Z28

iTrader: (8)

YES, THEY DO! Not very good with abstract thinking?

The numerical representation of the firing order means nothing when the two different manufacturers number the cylinders in the engine differently. Again, I say, the LS1 and the 4.6 and HO 5.0L engines share the same firing order.

Ford engine:

4.....8
3.....7
2.....6
1.....5

LS1 engine:

8.....7
6.....5
4.....3
2.....1

Now apply each firing order to the proper engine and note the order of firing cylinders. You'll see the the cylinders fire in the exact same firing order!

Dip Stick

iTrader: (1)

LS1 firing order: 1-8-7-2-6-5-4-3
Ford 5.0 firing order: 1-3-7-2-6-5-4-8
Ford 4.6 firing order: 1-3-7-2-6-5-4-8


Following your thinking chief.. now unless I too failed kindergarten.. you know where you put the circle inside the square till all your buds werein 6th grade...

Follow me with 4 rows and 2 columns.. numbering them r1-4 and c1-2.

r4c2-r1c1-r1c2-r4c1-r2c1-r2c2-r3c1-r3c2. this is for the ls1 1-8-7-2-6-5-4-3
r4c1-r2c1-r2c2-r3c1-r3c2-r4c2-r1c1-r1c2.this is for the ford1-3-7-2-6-5-4-8

If im not mistaken,.. the way you drew it out chief, at no point in their firing sequence do they ever line up.

ChocoTaco369

marc, follow the damn design yourself. the first two cylinders don't even match up. in order for the ford engine to be the same as the LS1's 1-8, the ford has to be 5-4. it's not. the firing orders aren't even close! you just owned yourself. honestly, how did you come to the conclusion they're the same. they're not even remotely similar!

honestly, marc, is this a joke? assuming your engine diagrams are correct, in order for the ford to fire the same, it has to fire 5-4-8-1-3-7-2-6. is that even remotely close to the ford's firing order of 1-3-7-2-6-5-4-8? there isn't even one single cylinder that matches up!

INMY01TA

iTrader: (1)

Look the same to me the way he presented it.