Track Results of LS2 Intake
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From: Fayettenam, North Cakalki
Track Results of LS2 Intake Well I finally made it to the track to test out this intake n 90 mm TB.
This is on a 346cid stock shortblock, PP LS6 StgII heads, G5X3 camshaft,
3500lb race weight.
With the LS6 and ported TB The car ran consistent 11.40s @121mph N/A.
With the LS2 and TPIS 90mm TB The best trap I could muster was 116.
I never Dynoed with the LS6 intake.
Made 399.8 SAE corrected with the LS2 after tuning.
I knew those numbers were low but had nothing to compare them to untill I went to the track.
Looks like I lost nearly 50 hp.
This setup will probably do great on a larger cid motor. But did horrible on my 346.
It would not get out of the hole to save its life. I launched at 6500 rpm pulled the tires a foot off the ground n then it would bog n fall on its face.
Looks like I will be getting another LS6 or a fast 78mm intake.
Sorry to dissapoint, But now some results are in.
Brad
This is on a 346cid stock shortblock, PP LS6 StgII heads, G5X3 camshaft,
3500lb race weight.
With the LS6 and ported TB The car ran consistent 11.40s @121mph N/A.
With the LS2 and TPIS 90mm TB The best trap I could muster was 116.
I never Dynoed with the LS6 intake.
Made 399.8 SAE corrected with the LS2 after tuning.
I knew those numbers were low but had nothing to compare them to untill I went to the track.
Looks like I lost nearly 50 hp.
This setup will probably do great on a larger cid motor. But did horrible on my 346.
It would not get out of the hole to save its life. I launched at 6500 rpm pulled the tires a foot off the ground n then it would bog n fall on its face.
Looks like I will be getting another LS6 or a fast 78mm intake.
Sorry to dissapoint, But now some results are in.
Brad
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From: Fayettenam, North Cakalki
Originally Posted by gomer
Holy ****... that's terrible. Are you going to dyno again after swaping back to the LS6 intake?
Yeah you can bet that I will. And I will post up the results. I only waited this long as I had no base line Dyno numbers with the LS6.
Brad
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From: Fayettenam, North Cakalki
Originally Posted by Another_User
I suspected as much. It's probably the same thing with the FAST intake too.
Brad
Was all other variables the same on both runs? Track prep., weather, etc.? All that makes a big difference. Without dyno graphs comparing the 2, theres no real way to say if the LS2 helped or made things worse.
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From: Fayettenam, North Cakalki
Trust me it made things worse. I was running Hoosier quicktime pros with the LS6 intake in worse weather.
It trapped 121 consistently on 3 trips to the track with about 12 to 15 passes.
I was running M/T et drags today and the D/A was 265. Not sure of the D/A with the LS6 but it was no where near as good.
With the Qtps I could not launch above 5500 without blowing the tires off.
The ET Drags did not Spin AT ALL on any of the 4 passes I made today and I was launching the dog crap out of it.
I cut 1.57s with the QTPs launching at 5500.
Today I cut a 1.65 and a couple of 1.7s launching at 6000 and 6500 rpm.
The car feels alot slower down the track too.
It just does not pull like it did with the LS6.
Brad
It trapped 121 consistently on 3 trips to the track with about 12 to 15 passes.
I was running M/T et drags today and the D/A was 265. Not sure of the D/A with the LS6 but it was no where near as good.
With the Qtps I could not launch above 5500 without blowing the tires off.
The ET Drags did not Spin AT ALL on any of the 4 passes I made today and I was launching the dog crap out of it.
I cut 1.57s with the QTPs launching at 5500.
Today I cut a 1.65 and a couple of 1.7s launching at 6000 and 6500 rpm.
The car feels alot slower down the track too.
It just does not pull like it did with the LS6.
Brad
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Originally Posted by WS-Sick
Strange. So many people were saying that it would perform a lot better than the LS6.
so just throw it into the corner and put it on when you do a 408 or so..... or i could trade you my ls6 intake, ported TB, fuel rail, and whatever else we'd need to swap plus 100 bux for your setup 
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From: Fayettenam, North Cakalki
Originally Posted by ramairstyle00
so just throw it into the corner and put it on when you do a 408 or so..... or i could trade you my ls6 intake, ported TB, fuel rail, and whatever else we'd need to swap plus 100 bux for your setup
Who knows, this set up may work well with a big shot of gas.
I am pondering the FAST 78mm intake as it can be ported easily. I would trade my entire setup minus the injectors for a FAST 78mm intake.
Brad
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From: Fayettenam, North Cakalki
Originally Posted by WS-Sick
Strange. So many people were saying that it would perform a lot better than the LS6.
Thats why I posted up. Now we have some DownRange feedback.
Brad
I wouldn't let this make up your mind. Something is not right. The intake shouldn't drop the numbers like that, there is more then meets the eye. Also a 6sp car wouldn't be killed by the torque drop that a ls2 intake would cause. Its not drasticly different from a ls6 intake (runner and volume). Other then the 90mm throttle body.
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You said you switched to ET drags....what size? If they were 28x10.5's you could very well attribute the loss of 60ft and of mph to having too much tire. What gear? Gonna need some more info. I would go back to the track with the the QTP's and see what happens.
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From: Fayettenam, North Cakalki
Originally Posted by hellbents10
I wouldn't let this make up your mind. Something is not right. The intake shouldn't drop the numbers like that, there is more then meets the eye. Also a 6sp car wouldn't be killed by the torque drop that a ls2 intake would cause. Its not drasticly different from a ls6 intake (runner and volume). Other then the 90mm throttle body.
I havnt made up my mind. I will be checkin every thing out tomorrow. The only changes were the intake n tb and tuning though. It runs fine. I will run a compression test on it in the morning.
FWIW on the street it drives great. Feels better than the ls6 but probably because of the tb letting more air in at part throttle.
Brad
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From: Fayettenam, North Cakalki
Originally Posted by BlkBeaSSt
You said you switched to ET drags....what size? If they were 28x10.5's you could very well attribute the loss of 60ft and of mph to having too much tire. What gear? Gonna need some more info. I would go back to the track with the the QTP's and see what happens.
4.33 gear in the nine inch.
Trust me guys all changes have been listed.
Those E/T drags are the Shiz!
Here is a pic from today