LS3 top end swap
Discussion
ARAF said:
On Charlie's dyno, our standard LS3 was 329 - to the nearest hp, the same as SW02TEC's LS2 with headers, cat back, CAI and re-map.
Both done within an hour on the same day.
Is that all thatbwas done to S W02TEC?Both done within an hour on the same day.
Saw it at the pod last weekend, only saw 1 run though, lots of wheelspin...
SturdyHSV said:
ARAF said:
On Charlie's dyno, our standard LS3 was 329 - to the nearest hp, the same as SW02TEC's LS2 with headers, cat back, CAI and re-map.
Both done within an hour on the same day.
Is that all thatbwas done to S W02TEC?Both done within an hour on the same day.
Saw it at the pod last weekend, only saw 1 run though, lots of wheelspin...
I'm sure it was - but that was a few years ago. Good to hear it's still going. 
ARAF said:
I thought the rods were for strength, as the central pillars are removed - so that you get the best of the LS2 design with the LS3 ports? I may be wrong though. 
The pillars are retained, the rods added to smooth the airflow into the runner, there are little gains from porting, the runner bar makes all the difference in the LS3/L76 intake. He has side by side flow data for stock, his intake and a ported fast 102 on FB and forums.
Gelf VXR said:
The pillars are retained, the rods added to smooth the airflow into the runner, there are little gains from porting, the runner bar makes all the difference in the LS3/L76 intake. He has side by side flow data for stock, his intake and a ported fast 102 on FB and forums.
Any links? Had a look at FistButt but couldnt see it 
ringram said:
Ok yeah I did see that, wasn't easily readable. But looks interesting.
How much is the work?
It's £150 for a bare intake, I haven't asked cost yet, I want to weigh up just the runner bars and if porting, I don't want to remove the pillars, a bit paranoid about the epoxy filling the holes coming outHow much is the work?
ringram said:
Gelf VXR said:
The pillars are retained, the rods added to smooth the airflow into the runner, there are little gains from porting, the runner bar makes all the difference in the LS3/L76 intake. He has side by side flow data for stock, his intake and a ported fast 102 on FB and forums.
Any links? Had a look at FistButt but couldnt see it 
It's only taken 4 1/2 years. 
Gelf VXR said:
Nice results, interested to see SRR results for a better comparison, is your cam emmisions friendly?
Are you numbers complete stock before vs after?
Cheers. The cam is described (by both US and Aus guys) as emissions friendly. Plus, Monaro5.7 is running a similar cam in an LS1 and his passed emissions, so I'm confident it is. I'm going to get an emissions test to compare against my MOT, which was pre-cam install.Are you numbers complete stock before vs after?
Before run is with headers, sports cats, catback and OTR intake.
mikeyb1987 said:
Cheers. The cam is described (by both US and Aus guys) as emissions friendly. Plus, Monaro5.7 is running a similar cam in an LS1 and his passed emissions, so I'm confident it is. I'm going to get an emissions test to compare against my MOT, which was pre-cam install.
Before run is with headers, sports cats, catback and OTR intake.
Your cam choice is very close to this one from Pat G, it's on a 113+4 for the LS2 L92 combo with LSL lobes found hereBefore run is with headers, sports cats, catback and OTR intake.
http://ls1tech.com/forums/dynamometer-results-comp...
I'm interested to see how the torque is down bottom end compared to my current cam.
Mines drinking oil, I think valve stem seals, so when it goes in for surgery it could be a new cam, lightened valves and comps single LSL springs and modified intake.
Well, I'm back home with a cammed V8
My first thoughts mainly surrounded the idle, which is superb.
YouTube link of warm idle:
http://youtu.be/0D40RkQ68H4
Kmud asked about town manners. I will admit that it isn't as town-friendly as a standard car. There's some hesitance and jumpiness but this only happens occasionally. The rest of the time it is extremely well-mannered.
Motorway cruising is on par with a standard car, and above 1,800 rpm the extra urge becomes apparent. It's too early to compare economy (new toys always mean a plummet in mpg!), but based on today (with lots of idling!!) it is roughly 5% less.
Power delivery on full throttle is intoxicating- it just keeps growing and growing all the way to the red line. It was raining/snowing so didn't really get a chance to properly get my toe down. Traction isn't an issue- VXR8 wheels with MPSS tyres matched to a steadily climbing power curve means the tyres are rarely overcome (unless you provoke it) Needless to say I'm hopeful of strong results in the 1/4 and the mile.
My first thoughts mainly surrounded the idle, which is superb.
YouTube link of warm idle:
http://youtu.be/0D40RkQ68H4
Kmud asked about town manners. I will admit that it isn't as town-friendly as a standard car. There's some hesitance and jumpiness but this only happens occasionally. The rest of the time it is extremely well-mannered.
Motorway cruising is on par with a standard car, and above 1,800 rpm the extra urge becomes apparent. It's too early to compare economy (new toys always mean a plummet in mpg!), but based on today (with lots of idling!!) it is roughly 5% less.
Power delivery on full throttle is intoxicating- it just keeps growing and growing all the way to the red line. It was raining/snowing so didn't really get a chance to properly get my toe down. Traction isn't an issue- VXR8 wheels with MPSS tyres matched to a steadily climbing power curve means the tyres are rarely overcome (unless you provoke it)
Needless to say I'm hopeful of strong results in the 1/4 and the mile.Edited by mikeyb1987 on Saturday 29th March 00:25
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