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Ls1 Exhaust Systems

AngryRB

By AngryRB,
in General Automotive Discussion

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gtr jet
gtr jet

Fuel and boost also make a difference to the pipe diameter required. At the moment I make close to 500HP at the engine on E85 through a 3" pipe but that doesn't mean I can't make more by going bigger

cuspub
cuspub

I know I'm late to this conversation however I would like to throw a couple of my thoughts into the conversation (probably all of which have been covered already). Harking back to the original questi

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bozodos Grand Master

bozodos

Posted
Posted

I run a 232 234 112 cam and it certainly isn't a pig. And it doesn't need 5000 to come alive. Compared to stock the power and torque started climbing substantially from 2500 rpm. Perhaps the Ines you experienced were shit tunes.

Not for a split second would I want a smaller can. Auto its a different story.

I drove an M6 LS1 with a 224/230 Howards cam and 3.9 diff, it felt like a doughy dog until about 4500. The owner agreed when he drove mine. Like I said, I've seen plenty with the 232/234 that were disappointments around the street.

Less is more IMO with street driven LS cam selection.

Willall are one of the most reputable tuning places in the country, graph looks pretty good, here's mine. Not tuned by RAS, but on their dyno. Disregard first plot, it's not accurate.

347a5tu.jpg

Ben C34 Grand Master

Ben C34

Posted
Posted

Cheers for posting your graoh. It would be interesting to see your mates graph.

Luckily being in SA Willall is the obvious choice. The car runs so nice.

Will be taking to the drags soon, just want to sort the diff out first.

AngryRB Grand Master

AngryRB

Posted
  • Author
Posted (edited)

Really glad I never sold my RB, these graphs are quite disappointing when you think of almost 6L's of V8 and theres only 200ish kw's at 4000rpm plus the torque, my skyline would be frying tyres whilst overtaking the LS1, I guess they arnt high tech but still bit shitty, I'm keen on a VCM9 though in the future mostly for sound, the RB is really where the fun is though I think, missing mine..

be interested to see what your LS1's sound like compared to mine.. any vids to share??? I could upload one of mine for comparisons..

Edited by AngryRB
Count Grantleyish Grand Master

Count Grantleyish

Posted
Posted

mine doesn't even bake first... hahaha, one step at a time hey.. with a manual one day it might lay a black line in second.. then that's worth throwing a party..

Haha

AngryRB Grand Master

AngryRB

Posted
  • Author
Posted (edited)

Hey greg, in this one, https://youtu.be/s80O-2-zrvM whats the noise in the first few seconds? sounds like lifters but then you push thru it like F#$k this shit lol , and that's cheating that's a 300zx :laugh:

Edited by AngryRB
Thunder Explorer

Thunder

Posted
Posted

Hey greg, in this one, https://youtu.be/s80O-2-zrvM whats the noise in the first few seconds? sounds like lifters but then you push thru it like F#$k this shit lol , and that's cheating that's a 300zx :laugh:

No idea what the noise is - probably just the video mic or the dyno whinging!!!

The driver complained that when he pulled 4th gear doing 160 - 180km/h at the track, if he put his foot down, it smoked the 300mm wide slicks!!!

Since then we freshened up the engine, softened the suspension, and did some brake work, so it will be pretty quick at the track.

There are lots of LSX powered street registered cars with far more power than the Z :woot:

Count Grantleyish Grand Master

Count Grantleyish

Posted
Posted

Off topic I know but since JC/SC are run by f**kwits brainwashed by tuners who's looking for quick buck.

Tell me, what's the point in having bigger throttle body on stock manifold?

Ben C34 Grand Master

Ben C34

Posted
Posted

Off topic I know but since JC/SC are run by f**kwits brainwashed by tuners who's looking for quick buck.

Tell me, what's the point in having bigger throttle body on stock manifold?

Looks cooler.

I asked Willall about it and they said don't bother.

gtr jet Veteran

gtr jet

Posted
Posted

Mate of mine is building an LS1 for his S14 at the moment and decided to have a look at the stock throttle body and manifold last night and saw there is no point going a bigger throttle body as the inlet manifold mouth will be smaller.

You don't really need to touch that stuff unless you're aiming for 350-400kw+.

Another mate runs one of those big tunnel ram looking Edelbrock manifolds with a big throttle body and still only makes about 320kw but fark me it sings.

bozodos Grand Master

bozodos

Posted
Posted

Off topic I know but since JC/SC are run by f**kwits brainwashed by tuners who's looking for quick buck.

Tell me, what's the point in having bigger throttle body on stock manifold?

You'd be thinking of JC where idiots drink the MACE / Oztrack kool aid.

Most LS owners know that stock headed LS1 is not really good for more than 280rwkw or so without head changes or FI.

No one really bothers with TB upgrades on LS1s these days, Holley / FAST intakes are of most benefit for LS2 owners (due to shit factory intake manifold) or big cam / strokers.

Mine is on the lower end for that combination of cam + engine - either way it will roast the first 3 gears if I want it to (full rpm shift into 4th is @ around 120-130+ km/h), and IMO has 'enough' power for street driving, in a car that weighs about the same as an R33. Lazy gearing is the letdown, and probably why the dyno sheet looks doughy <4000rpm. Trust me when I say it's not like that to drive.

I miss my R32, but I don't miss the RB25 compared to having a Gen 4 LS.

Also there is no technology deficit - the LS is fairly up to date, OHV design makes for an engine with a lower centre of gravity, more compact package, whilst still allowing for a larger swept volume.

Count Grantleyish Grand Master

Count Grantleyish

Posted
Posted

Yeah, Greg here told us not to bother wasting $ on LS1, so I dug deeper in mine and found number of pointless mods done to it.

Now to sell them to idiots.

FYI, Ramjet is the worst designed otr of any kind, to change filters you need to break out a chainsaw and cut the car in half to get them out especially HSV and their one piece bumper/grill.

bozodos Grand Master

bozodos

Posted
Posted

I probably wouldn't bother with LS1 these days, apart from a turbo, or s/h supercharger either. L76/77/98 are plentiful and can easily be converted to run cable throttlebodies for conversions + more compression, better fuel system and factory heads.

V6 guys are the worst - stuff like manifold insulators etc LOL.

Ramjets are terrible - the VCM OTR on mine is a bad enough design with the corners rubbing the bonnet.

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