New LS1 Owners - Newbie Tech - 2001 WS6 vs. 2001 T/A

Sorry about beating this topic into the ground but I'm confused about something. Why is the 2001 WS6 rated at 320 H.P and the 2001 T/A rated at 310 H.P. It's the same engine and the only real major differences are the Ram Air Hood Scoop (that's still debatable if it increases HP or not) the 17" tires and the suspension.

hood scoop and a more free flowing exhaust

Here's another recent topic on the subject:

http://www.ls1tech.com/forums//showthread.php?t=149330

So is it a correct assumption that in real #'s, WS6 and T/A should be the same HP?

Sorry about beating this topic into the ground but I'm confused about something. Why is the 2001 WS6 rated at 320 H.P and the 2001 T/A rated at 310 H.P. It's the same engine and the only real major differences are the Ram Air Hood Scoop (that's still debatable if it increases HP or not) the 17" tires and the suspension.

I thought the WS6 for 2001 was rated at 325 HP?

http://www.mpt.org/motorweek/reviews/rt2148a.shtml

:secret:

Probably more about the lid than the 'scoop itself.
Any model that ditches the base resonator lid is
going to get rid of substantial intake pressure drop
at higher flows.

For the SS in '02 there was 10 "rated HP" for the
Blackwing lid and 10 "rated HP" for the SLP exhausts
(CME or D/D). Ala carte; your SS might have come
with both, either or none. Mine had a 335HP window
sticker, I had to buy my own lid.

Then again, they're GM's "ratings" and they can make
up whatever # they like, as long as they can meet the
minimum. Funny "segmenting" horsepower rating tricks
are the norm, a fine long General Motors tradition.

:bang: :bang:

havent people learned yet that the ratings for the fbodies dont mean shit, its what they put down to the ground

Yep. The listed HP ratings were a joke. You are better off grouping the LS1 F-bodies by year, than by model...

Probably more about the lid than the 'scoop itself.
Any model that ditches the base resonator lid is
going to get rid of substantial intake pressure drop
at higher flows.

For the SS in '02 there was 10 "rated HP" for the
Blackwing lid and 10 "rated HP" for the SLP exhausts
(CME or D/D). Ala carte; your SS might have come
with both, either or none. Mine had a 335HP window
sticker, I had to buy my own lid.

Then again, they're GM's "ratings" and they can make
up whatever # they like, as long as they can meet the
minimum. Funny "segmenting" horsepower rating tricks
are the norm, a fine long General Motors tradition.

The Firehawk came standard with the 345hp package in 02. I am pretty sure that the WS6 doesn't get a different lid, it just gets a taller inlet underneath the lid... I might be wrong though.

The WS6 does not have a different lid, but rather just as he stated above about a taller inlet to the lid intake system. It slightly more room for the air to flow from the ram air. Just the Ram Air hood/less restrictive exhaust/nice 17's wheels/steering wheel cooler/32mm front sway bar/ and I think 1 more thing I missing are the differences between standard T/A and WS6 T/A.

:bang: :bang:

havent people learned yet that the ratings for the fbodies dont mean shit, its what they put down to the ground

JRP is right. The ratings are trash in two ways. The first is that at the engine horsepower is nothing, it's what gets to the ground. An A4 vs. an M6 stock for stock will put less to the ground because of the drivetrain loss of the A4. The second reason they are a joke is because GM underrated the HP on the LS1. On '01's and '02's with an M6 you can usually put to the wheels what GM rated at the motor, or damn close. Its all about what gets to the ground, not the "HP rating".

So your point is.....

Put your Feakin car on a Dyno and then you will know what your Freakin HP is!

But it is nice to have a general idea and that is when Manufacturer ratings and others are a good source. The 01 to 02 as an idea is 310 for a TA/Z28 and 325 for a WS6.

:doublepuk

Also, I may be wrong (please give it to me if I am), but the WS6 has an aluminum drive shaft.......

So your point is.....

Put your Feakin car on a Dyno and then you will know what your Freakin HP is!

But it is nice to have a general idea and that is when Manufacturer ratings and others are a good source. The 01 to 02 as an idea is 310 for a TA/Z28 and 325 for a WS6.

:doublepuk

Also, I may be wrong (please give it to me if I am), but the WS6 has an aluminum drive shaft.......

No, all 6 speed cars had the aluminum driveshaft.

Even autos with the 3.23 gears had the aluminum driveshaft. It will come down to driver and build tolerances for any one of these Ls1 F-bodys. You can throw the factory ratings in the trash...

Well my '01 WS6 A4 has aluminum driveshaft :)
My dyno numbers , bone stock was 290HP & 301TQ running WAY rich.

Well my '01 WS6 A4 has aluminum driveshaft :)
My dyno numbers , bone stock was 290HP & 301TQ running WAY rich.Aluminum is for beer cans, not driveshafts. A friend of mine snapped his in half last weekend at the track with only a lid, cutout, drag radials, and a Mcleod clutch.

Didn't say how long it was going to stay in there though :devil:

I guess I should add that 3.23 optioned 4L60E cars had the aluminum driveshaft too. So only the 2.77 cars didn't have the aluminum driveshaft.

I guess I should add that 3.23 optioned 4L60E cars had the aluminum driveshaft too. So only the 2.77 cars didn't have the aluminum driveshaft.
Well i'm pretty sure my car has 2.73's and i know for a fact that it has an aluminum driveshaft. It's a 99 Trans-am A4. So i'm not real sure if that whole only A4's wiht 3.23's have aluminum driveshafts is true

I guess I should add that 3.23 optioned 4L60E cars had the aluminum driveshaft too. So only the 2.77 cars didn't have the aluminum driveshaft.
I thought they had 2.73's instead of 2.77's?

I thought they had 2.73's instead of 2.77's?

your are correct, its 2.73's, it was probably just a typo

2.73s got steel, 3.23 and 3.42 got aluminum. Unless you are using a big shot of juice with a M6, the aluminum shaft is plenty safe. I've hit mine with well over 500 horse...

And the Ram Air will not show any gain on the dyno, but may at the track. MAY! I can say when I added the BGRA to my WS6 I shaved .15 seconds off my ET. Cold air in IS better!!! But what the stock ram air setup is worth I have no idea.

your are correct, its 2.73's, it was probably just a typo

Yeah, I meant 2.73's... My mind is always set up for the BW 9 bolt in the 3rd gens with the odd ratios. :judge: I'm so used to talking about them.

Yeah, I meant 2.73's... My mind is always set up for the BW 9 bolt in the 3rd gens with the odd ratios. :judge: I'm so used to talking about them.
so my car has an aluminum drive shaft, does that mean it has 3.23's? According to the vin number on my car i think it has the 2.73's, is my car wierd or somethin?

so my car has an aluminum drive shaft, does that mean it has 3.23's? According to the vin number on my car i think it has the 2.73's, is my car wierd or somethin?

Your VIN won't tell you what gears you have. Look at the RPO codes on your door.

What are the codes for the gears?

Your VIN won't tell you what gears you have. Look at the RPO codes on your door.
drivers side door i suppose, if thats the case i'll never know becasue i don't have the same door on it. My car got its ass kicked by a big ford that didn't see it when it backed up. Is there any other way i can tell about the gear ratio? Like i said i do have the aluminum driveshaft but always assumed it had 2.73's, any idea's?

drivers side door i suppose, if thats the case i'll never know becasue i don't have the same door on it. My car got its ass kicked by a big ford that didn't see it when it backed up. Is there any other way i can tell about the gear ratio? Like i said i do have the aluminum driveshaft but always assumed it had 2.73's, any idea's?

Take your VIN to a dealer and they might be able to get a hold of your RPO's. Maybe call Chevrolet restoration or something like that as well. GU5 is the 3.23 RPO I think.

What RPM are you at while cruising at 70MPH?

What are the codes for the gears?

GU2 = 2.73
GU5 = 3.23
GU6 = 3.42

The WS6 gets the extra horsepower from the exhaust... the lid doesn't do a whole hell of a lot. I put the $99 WS6 takeoff exhaust on my T/A and gained .2 on the drag strip.

What RPM are you at while cruising at 70MPH?
About 2100 i think, or its real close ot that anyways. 70 is a pretty sweet spot on my car as far as acceleration goes.

I have an M6 so I'm not sure about which RPM's would correspond to which gears, maybe some one else can chime in. 2:73 A4's will cruise at lower RPM's than the 3:23 A4's.

When I first got my car I had no idea what gears these cars came with. I called the local dealer and told them my VIN and they said 3.23.

If you have the code GU5 on the inside of your driver side door, then you have the alumnium drive shaft and/or 3.23's...I can't remember which option it stands for.
Ed

About 2100 i think, or its real close ot that anyways. 70 is a pretty sweet spot on my car as far as acceleration goes.
That sounds about right for 3.23, pretty much what I am running at that speed.

When I first got my car I had no idea what gears these cars came with. I called the local dealer and told them my VIN and they said 3.23.
Where in ky are you from anyways?

WS6 package was strickly suspension mods no? the hood was just a perk to separate the two... Am I wrong on this?? I know that "WS6"has been around for 20 years or so.

no

the Ws6 was used on the earlier generations as a true suspension mods.

but the 4th gen, became the ram air performance handling package, so it was some of both. Rims, Tires, Suspension (shocks, springs, swaybars), Ram air hood.. .

as the years went on, midway through 2000 the suspension package got watered down to nothing more than swaybars, rims/tires.

Ryan.