08 TC Showed Up Today!
I did not say a stock TC will beat a G8 GXP. Stock for stock the GXP is half a second or so quicker in the QM stock. I said a full bolton and tuned one will. The G8 has the same power to weight ratio as the LS2 GTO and as revhigh can attest a tuned TC will beat a Stock LS2 GTO from a roll. From a dig probably not because no traction at all for the TC. You want to see a big power gain look in my gallery at my bone stock vs tuned dyno numbers the average gain is approx 65 whp from stock. G8= 4000 lbs 370 whp=10.8 lbs/whp Modded TC = 2900 lbs 320 whp= 9.0 lbs per whp. which has the better power to weight ratio? The TC will have traction issues though unless he is on DRs. $42,000 vs $24,000 and the Cobalt will kill the GXP on any road course. Which is better for the money from a performance standpoint?
Update- A couple tweaks in the PCM and we picked up 30 whp and 80 ft lbs! These things really wake up with a simple tune. I only got into the basics so far. I'm just thinking how easy it's going to be to spin the tires with 323 ft lbs to the tires.
Last edited by Matt M; Mar 19, 2009 at 10:55 PM.
Dont be so sure. That car weighs 4000 lbs and has approx 370 whp 365 wtrq. From a roll a full bolt on tuned TC at 2900 lbs and approx 320 whp 350 wrtq is very fast. The GXP costs 20K more than the TC. Not worth the money IMHO. I can buy a brand new Vette with the same engine and 800 lbs lighter for about the same price.
the ring is not the Be-All of circuits, it features MULTIPLE long straights where a high horsepower car like the G8 GXP will shine over the less powerful Cobalt SS T/C, the fact the SS is faster, tells the tale on how much better of a handler it is due to being so far down in power compared to the GXP...
put it this way, take that racing to Laguna Seca or Infinieon(Sears Point) and the SS would kill the G8 GXP, as the GXP wouldn't have as many long straights to shine
put it this way, take that racing to Laguna Seca or Infinieon(Sears Point) and the SS would kill the G8 GXP, as the GXP wouldn't have as many long straights to shine
Another update- 283WHP with ZZP downpipe and tune. We will have our offroad downpipe available soon. It will be priced very competetively. 
We will also be working on an intake soon. The track opens in a couple weeks!

We will also be working on an intake soon. The track opens in a couple weeks!
Joined: 08-27-07
Posts: 21,561
Likes: 4
From: Jacksonville, FL
Thread
Thread Starter
Forum
Replies
Last Post







