Hey Vet Buddies I Have A Question? My Friend Just Got A 05 Gto Automatic And He Says It Have 400 Hp Stock. Then He Sayed They Did {some Stuff}to It, So He Say.how Much Hp Do A Stock 05 Auto Really Has And What Kind Of Tranny Is It?

 

If it's a 6.0 then it is a 400 hp LS2 motor.

 

Your car will still take it

 

depending on the "stuff" they did you might lose. Just depending on what they did. It's a heavy car still but find out what stuff they did and we can really let you know

 

A GTO followed me on a long ramp and zipped around me when we hit the highway. I was very impressed by the acceleration and stupidity. Seemed much faster than my C5, but I didn't chase him. Maybe his was modified?

 

We sold our '05 GTO for the vette. The GTO would scoot pretty good,but it probably still wouldn't out run the vette. The GTO is a hog at a little over 3,700 lbs.I think the C5 vette is around 3,200.

The LS2 was upgraded with:

Cylinder bore diameter increased to 101.6 mm (4.00 inches), increasing displacement to 6.0 liters or 364 c.i.

Camshaft lift increased to take advantage of increased cylinder head flow.

Compression raised to 10.9:1

Larger, 90-mm single-blade throttle body

I think the intakes were LS6 models.

Cylinder heads for the LS2 are derived from designs used in previous Corvette Z06 models, including raised intake ports and an unshrouded-valve combustion chamber design.

 

LS2 GTO is 400 HP, Vette LS1 350 HP- Vette has the edge.If that GTO has some mods it will be a differant story. I ran up against a LS2 GTO last summer with my LS1 Vette with a few basic boltons and smoked it from a roll by many car lengths.

 

Beat it like a bell!!!

 

I just traded in my 05 for my vette. The vette can take it, if its stock. But find out what he did to it or you might been in for a real surprise.

 

Several GTO's at the track in the 11's. One claims a cam, Fast and tires only ??
Pit

 

It takes alot more to get a GTO into the 11's than cam & intake. My supercharged (maggie) with catback, cai, custom tune would run mid 12's. Problem is hooking them up and terrible wheel hop, along with being heavy (close to 3900lb.). He probably had aleast 100 shot along with cam to be in 11's.

 

yeah, probably so. No telling the real story.
Most do have bad wheel hop..don't know what they do to stop it. One ran 11.8 and came out clean.

 

That animation is awesome.

Anyways, he said he has got some work done. Could that mean a air filter, or some spray. Don't be scaid. Just run him, if you lose just start adding mods. If you win don't brag just say wow that thing is fast.

 

find out what he has done! but stock for stock the vette will win

 

I agree with everyone else. Stock for stock the vette still wins. If he has significant mods it could swing things in his favor though.

 

The 04 GTO's had 350hp LS1's. The 05-06 have 400hp LS2's. The manuals also come with the MN12 tranny (ala Z06). The cars are heavy, a good 400-500lbs more on a good day. They are also not a direct competitor, marketing wise. The vette is a sports car, the GTO is more of a touring car to compete with G35's and 3series BMW's. It's a completely different experience driving in one. It's a pretty soft ride with a quite interior. Not at all like the vette.

Complete
Plenty of guys are doing that. I personally know a guy running 12.1 with just pacesetter headers and on street tires. I'd suggest heading over to LS1gto.com if you doubt that. Now, I'll also be the first to admit that is freakishly low, and if I didn't know it's verified I'd be a little skeptical too. Point is, those GTO's are capable. How can you make a statement that cam and intake couldn't get a car into the 11's without knowing what kind of cam? The LS2 has a lot of potential.
The GTO can be put on a diet and lose 100lbs easily (yes I know that's not really stock), but it does suffer from bad wheel hop, one of the reasons that the Auto cars are actually faster in the 1/4 than the manual. A set of drag bags, or some suspension improvements can completely change the characteristics of the car.

I know a lot about the GTO, since one of my close friends and co-workers owns an 06. We spend a lot of time talking back and forth on the merits of each car and helping each other during upgrades. The C5 and the GTO are close in specs. Power/weight the C5 has a slight advantage.
But the real proof is in racing, and at several runs at Atco raceway, my C5 is a minimum of .7sec quicker than my friends GTO.
We both have no real power adders, other than CAI's and catbacks.
My best time 12.89.
His 13.6x.
But when his wheel-hop gets under control (and that may happen soon with his Harrop cover, and suspension upgrades), I know it will be a lot closer.

 

I've been on the LS1 boards for 3yrs and have been to many GTO only drag events. I can tell you that I have never seen a GTO with only headers run a 12.1 (and without DR's ?). I'd be willing to bet some money to see that one. Tell your friend not to waste his money on a harrop diff. cover. Spend it on drag bags and a pedders set up. Take a look at the LS1 boards under drag racing. Or better yet, check this link & see what it really takes to get a goat into the 11's. My point is that it is not "header only". Your talking at least CAI, custom tune and drag radials. Your friend running the 13.6 WITH cai and catbacks is more realistic. Complete bs is someone who "knows someone who has a GTO" http://www.ls1gto.com/forums/showthread.php?t=106613

 

LOBOOST who hangs out in the FI/Nitrous Section has a fully built 364 LS2 APS TT 2005 GTO that has 770 rwhp and 775 rwtq. Looks completely stock.

 

I ran a GT0 with the 5.7 and pulled him pretty good then I raced my friends 6.0 GT0 with Headers/exaust and a air filter and I pulled him by almost two cars from a 15 mph roll (TracK)my car is a 99 FRC with B&B bullets and a air filter

 

talk about , that has to be the biggest pile I've seen in a while.