shiv15

iTrader: (7)

Drive train loss is roughly 15%. Lightweight flywheel etc would lower that a bit. You have an m6 right?

Where do you want your power? All over, up top?

Idk anything about turbos except with that setup you'll want a diff h/c setup. Check around the fi section.

If you get bored nitrous is cheap.

1991ls13

iTrader: (1)

lol o ya forgot about that lol NOS!!!!!

jk but ya i know that ill need a diff h-c. but its hard to get traction anyways right now with what i have till 3rd so im all about up top power(why i want to extend my rpm range)

example, i`d love 500whp and 400tq, rather then 400whp and 500tq.

my weight on the car without me is 2880-2900, depending how much i have in the tank. which ill beworkin on lowering that soon too lol

shiv15

iTrader: (7)

a gto that light? wow!

If you look around at some of the dyno threads and look at graphs in relation to cam size you will see that higher duration cams (ms3, ms4, vrx5, vindicator, etc) the power really comes on after 4k and up till about 7k. When you go with a smaller cam you get more power in the mid range and it peaks lower than the big ones. But with those big cams you get the really choppy idle sound.

Is this a street car or does it see some track? What you want to look for is the most power under the curve and power everywhere. Like I said earlier I'd recommend smaller than those sizes. It's a lot more complicated than im simplifying it too. I'd spend a good amount of time reading up in the gen 3 internal section.

Do you have to pass emissions? I see it says CA for location. They are pretty strict out there aren't they?

This thread is a good read: https://ls1tech.com/forums/generatio...am-change.html

1991ls13

iTrader: (1)

yes, ca sucks but theres ways around it lol, and its mainly a street car cause i dd it but i will be going to the track here and there and having fun with it with friends.....ive looked into the ms3 as well and its not too choppy to me, theres a s14 guy here that has one and it doesnt sound bad to me but i heard they dont make those anymore.

RPM WS6

iTrader: (3)

I see you mentioning turbos in a few posts. Before you select a cam, first decide if you actually want a turbo or not. If so, you'll want a cam that maintains good cylinder pressure for best power with FI. These are NOT the same cams that will make the most power NA. So it's best to make this decision first.

If you even have a hint that you might want a turbo, first do some reading in the Forced Induction section and see if a turbo is right for you. Then worry about a cam once you've made this decision.

shiv15

iTrader: (7)

They still make the ms3 if thats what you were saying. texas-speed.com

So what is too choppy then? Every ms3 I've heard has had a mean idle lol. Call around to sponsors like texas speed, vengeance racing, thunder racing, etc and see what they recommend for you. I will say that VR has some good sales right now that can save you a few dollars. Ask for ron if you call there he knows his stuff.

And I agree with RPM WS6 100%. Know what you want out of the car in the long run before you throw money at it. It will save you a lot of time, grief, and cash of changing out parts that are no longer useful.

hurleyboy12

I have a the g5x3.. its 236, 242 i believe..
heres a sound clip of mine with the stage 2.5 ls6 heads and the g5x3 cats and borla muffler

1991ls13

iTrader: (1)

ok here we go, i search to find close set ups to what iwant but cant find it really,
advise, proven please.

two set ups for better hp and flow but sound it an issue, i dont want it to be screaming when im idleing or just driving normal.

better set up for what im talking about?

x pipe.... 3 inch off long tube headers to 2 12' resinators, then 2.5' ater into the x and then out the back.

or


y pipe.....3 in off long tube into 2 resinaoters then 4 inch off that into the y and out the back.

thanks.

best flow and hp gain with out bleeding from my ears.....

ps, will have head and cam in the next fewmonths, so take that into consideration

RPM WS6

iTrader: (3)

Any of those exhaust setups will be pretty loud, especially once you do heads and cam.

Resonators will get rid of some noise, but you'll have to use some sort of bigger muffler if you really want to tame it down.

If you have the space, look into putting some 5" round Magnaflows somewhere in the system, or Dynomax Ultraflows (also round), or Borla XR-1s. Any of those, in addition to the 12" bullets, should tame things up nicely.

And again, I'd pick the X-pipe/true dual always. Y-pipes are nothing more than a space compromise when people (or the factory) can't/won't make room or spend the money on true duals.

1991ls13

iTrader: (1)

ya thats part of the problem,is space. i can do the x pipe but it`ll have to come out both to one side cause my gas tank is in the way.
but the bullets....might have to look into that thank you

1991ls13

iTrader: (1)

aslo, ive noticed on the stikkys most people have y pipe`s although most say theylike the x. its hard to find someone that has a REAL Y pipe cause most here that has ss and what not have a y but then goes into a hug muffler and a dual outlet so that wont sound anything like what mine will sound like. im thinkin 2 2.5 x pipes with two big bullets res thwn straight pipe will be great,.....cause im thinkin 2.5+2.5= 5'' lol thank one big 4'',although i like the one pipe import look(dual tips on duals are myfav though)....haha

jonlisa973

iTrader: (17)

Really good ideas, the 799s are some good castings. The same as the 243.

DVS99TRANS

iTrader: (7)

Here is the MS3 on a 114LSA for you open header on my 99. Was waiting for the rest of my exhaust to show up. This cam pushes it for piston to valve clearance though on the stock motor. Sorry for the whistling, my FAST does which I don't mind. Sounds like its supercharged almost. This is out of a 408 though, but it sounds the exact same on the stock 346.

http://www.youtube.com/watch?v=Fku7PhM-1ro

blue00ZZleeper

iTrader: (5)

I think you should do some more research. Sounds like your bouncing around on your ideas. A good heads cam combo isnt going to be cheap but I've seen agressive combos make 460ish+(rwhp/dyno jet traps 118mph). All of those setups were on agressive cams which you mentioned you didnt want. A set of ported and polished LS6 heads, full bolt ons and a decent cam will probably make you 430ish to the wheels.

1991ls13

iTrader: (1)

yes i know, but now im starting to get an ideas of what specs i lookin for etc, still not sure of heads, either p/p mine,idk what that`ll give me, or just look around for some 243 p/p. but the cam....
heres another clip that i dont think that sounds to hasth, its perfect actualy and its a vrx4. just so you can get an idea of what "I" think is harsh and not harsh.
http://www.youtube.com/watch?v=Ycnm1e6IdU8.


i heard there very streetable even the 4, as you can tell from the video, and i just read a forum(http://www.ls1.com/forums/showthread.php?t=82058) that a guy had just a cam, and it was only the vrx3, and he laid down just shy of 400whp.

soim thinking if i go vrx4, which is a little bigger, heads, upgrade my stock ls6 intake mani,and also have a higher rated ls1(gto=350bhp/camaro=315bhp) fix my exhaust and i should be in the mid 400whp for sure it seems like.

1991ls13

iTrader: (1)

ps: anyone heard or use a magnaflow x pipe? its a muffler and a x pipe??? does this work the exact same or is there a difference. im guess it just quit it down too which is perfect....if thats the case, Ill get two resonators and the muffler x pipe.....

1991ls13

iTrader: (1)

ok, well i cant find any vrx4`s for sale anywhere,i googled and nothing, so if someone can show me a few places where it is, please.

but heres a few cams ive lloked at that seems right in my ball park, please fill free to comment.
http://www.lmperformance.com/6369/1.html
http://www.lmpracing.com/24953/1.html
http://www.latemodelrestoration.com/item/CCA-5442811

i could post up a few more but there all pretty much the same.

price seems fair, alot easier once you know **** about cams lol.

also, the thread i put in above, the vrx3 getting 390whp with bolt ons. i asked a shop if i went with a cam and head combo with them(my heads just p/p)i`d only get about 75 more horse he said....WTF!!!! im at 326whp, please, do the math..it doesnt sound right.

if the camaro making 390whp with just a cam thats 65 right there with just the cam and im rated more hp right out of the gate, then a f body.

basically my question is, im only going to be looking at another 20-25hp for the heads. if so, F### that, im not about to spend 1500 on heads for 25hp.
please someone explain something to me cause this doesnt sound right.

02WS6SSZ71

iTrader: (20)

You've mentioned in multiple posts having a higher HP rating as a starting point (GTO LS1) and therefore expecting a higher end result than a comparable f-body LS1. Bad news: this is NOT how it works. Take 100 LS1s from any source, slap on the same heads/cam/tune, and +/- they will make the same power. If there was any difference in power output of a GTO vs. f-bod LS1, it would be do to differences in factory cam/heads (not sure if GTOs had different head castings from the factory or how they accounted for the extra 25hp rating).

1991ls13

iTrader: (1)

ok, well even if that doesnt matter, everything i said is still open, 390whp with what i have plus a vrx3 cam. but if i got something like the vrx4 or a few other options that are right there with it, not only should i expect just alittle more becaue of the bigger cam, but i should only expect 25hp out of the heads? i was thinging 1000-1500 $$ should add at least 40hp, or is the guy at the shop thinking ill be going with a small cam?
searched head gains and got nothing.

1991ls13

iTrader: (1)

i figured out that im justy going to go with a custom comp cam.

230ish/232ish between .595-.605ish maybe higher and with a 114lsa

discuss, suggestions,advice...?