Bklynstanger

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.

chpmnsws6

iTrader: (70)

hood scoop and a more free flowing exhaust

frozyn

Here's another recent topic on the subject:

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

Bklynstanger

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

ActionJack

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

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

jimmyblue

iTrader: (11)

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.

jrp

iTrader: (16)

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

Benjamin Russick

iTrader: (1)

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

demonspeed

iTrader: (7)

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.

98FormulaWS6

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.

16nrollininaws6

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".

ActionJack

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.



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

demonspeed

iTrader: (7)

No, all 6 speed cars had the aluminum driveshaft.

Benjamin Russick

iTrader: (1)

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...

KimberWS6

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

INMY01TA

iTrader: (1)

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.

KimberWS6

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

demonspeed

iTrader: (7)

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.

git_sum

iTrader: (10)

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

git_sum

iTrader: (10)

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