GT40 vs corvette
Senior User
Joined: Mar 2003
Posts: 248
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From: Ottawa, KS
You are comparing a N/A LS6 to a supercharged 5.4. As for souping up the GT-40, you could add a twin turbo setup, a better pulley as mentioned, nitrous, or anything else. And you could do the same with the vette. How much power would that all aluminum 5.4 make without the Eaton supercharger on it? Would it make 405 hp? Just food for thought
Posting Guru
Joined: Apr 2000
Posts: 1,249
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From: Pryor
Robert Yates is producing 4.6L DOHC motors with 11.0:1 and a max valve lift of .500 and he's getting 500 hp out of them. I would suppose that you could get quite a bit more out of a NA 5.4, especially if you bump the cam lift up to around .700.
Tuned
Joined: Sep 2003
Posts: 374
Likes: 0
From: Sandy Springs, GA
The 2004 Ford GT build date is 4-29-04. It was announced as 500hp (plus) with 500lb-ft of torque (400@ 2000rpm). It has a 356-T6 aluminum block, forged pistons, forged rods, and a 12psi Eaton twin-screw blower. It lists for $139,000 (plus delivery, tax, title, and dealer mark-up).
The new C6 is a 2005 with 400hp. The new C6 Z06 is only a rumor just as the Mustang Cobra/Bullitt/Shelby/et al. No flame from me, the new vette (and old Z06) are great sports cars. The are less than half the price of a GT.
I'd still pick the GT.
The new C6 is a 2005 with 400hp. The new C6 Z06 is only a rumor just as the Mustang Cobra/Bullitt/Shelby/et al. No flame from me, the new vette (and old Z06) are great sports cars. The are less than half the price of a GT.
I'd still pick the GT.
Senior User
Joined: Jan 2004
Posts: 293
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From: IN
The C6 Z06 is not a rumor, It will most certainly be built. It just hasn't been introduced yet. I know for a fact that it will have a 3 valve OHV 6.3 liter delivering 500 HP. I've seen the motor first hand.
Acording to people in the know, they are currently testing the cars on various tracks. The C6 Z06 will differ in look slightly from the base C6, and will have an aluminum frame for a few hundred pound savings as well. It will make its debut at the 2005 NAIAS in Detroit.
Acording to people in the know, they are currently testing the cars on various tracks. The C6 Z06 will differ in look slightly from the base C6, and will have an aluminum frame for a few hundred pound savings as well. It will make its debut at the 2005 NAIAS in Detroit.
Postmaster
Joined: Jul 2003
Posts: 2,711
Likes: 2
From: Pittsburgh
I wanna see chevy come back out with a big block vette. Back with the 427 L88 they were pushing 430 CLAIMED hp (it was actually closer to the 600 mark, they underrated the motor by almost 2000 RPM). Even taking into account a 10-15% parasitic loss your still running at about 550 hp at the dirt. 2 valves, pushrods, and a four barrel. Take that same motor, fuel inject it, use a computerized flow bench to redesign the heads, bring it up to about 14:1, leave it with 2 valves and pushrods, and i'm sure it'd be hitting the 700 mark no problem. If they were to do this there would be no more "but it has no torque". I don't see it happening, but if they did i'd buy one in an instant.
Justin
Justin
Senior User
Joined: Jan 2004
Posts: 293
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From: IN
There's no way any gas motor will survive on todays crappy pump gas with 14:1 comp. With todays spark management and aluminum heads with decent quench characteristics, you might see 11:1, but that is pushing it and the computer will have the timing set pretty soft most of the time.
The new small blocks in the Vettes are bad *** motors. Old School pushrod tech meets new age tuning and computers. Makes for one hell of a combo.
The new small blocks in the Vettes are bad *** motors. Old School pushrod tech meets new age tuning and computers. Makes for one hell of a combo.
Junior User
Joined: Nov 2003
Posts: 92
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Re: GT40 vs corvette
Originally posted by COBRAjrb
what do u guys think is better 2004 GT40 or the 2004 corvette? i personaly think the GT40 rocks \m/ 
what do u guys think is better 2004 GT40 or the 2004 corvette? i personaly think the GT40 rocks \m/
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Postmaster
Joined: Jul 2003
Posts: 2,711
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From: Pittsburgh
alot of factory 4 bangers are running 12 and 13:1 with GOOD computer management. What they do is find the balance between timing and compression to the point of diminishing returns. They jack up the compression while letting the computer retard timing unil they quit gaining power on regular unleaded. That's where they set the compression. (at least on performance models)
Justin
Justin
Senior User
Joined: Jan 2004
Posts: 293
Likes: 0
From: IN
I agree. I show me an example of a production engine with over 11.5:1, then I'll believe it.
The Honda S2000, which has the most highly tuned N/A 4 cylinder built, has 11.1:1. I don't know of any higher than that.
The Honda S2000, which has the most highly tuned N/A 4 cylinder built, has 11.1:1. I don't know of any higher than that.
Last edited by EV2DEMON; Feb 6, 2004 at 06:34 PM.
Senior User
Joined: Jan 2004
Posts: 293
Likes: 0
From: IN
Well, I'm not a big fan of 4 bangers my self, though that doesn't mean I don't appreciate a well engineered motor when I see one.
The 4cyl. S2000 has 11.1:1 stock, from the factory. It might not run with a GT(40), but it will out run a V8 Mustang GT.
The 4cyl. S2000 has 11.1:1 stock, from the factory. It might not run with a GT(40), but it will out run a V8 Mustang GT.
Tuned
Joined: Sep 2003
Posts: 374
Likes: 0
From: Sandy Springs, GA
Re: Re: GT40 vs corvette
Originally posted by 4rdsrock
the 2004 gt40 corvett's suck.
the 2004 gt40 corvett's suck.
Note to 4rdsrock: The GT has 500hp and 500ft/lbs torque. The Corvette has 400hp. I guess the 2004 gt40 corvett has 450?
Senior User
Joined: Jul 2003
Posts: 114
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"The Ford GT cost twice as much"
Ok so when did true high performance vehicles become inexpensive?
Price doesn't matter with regards to the Ford GT...if you can afford to buy one you could enjoy driving it for years and then sell it for MORE than you paid for it when it was new. What does an original GT-40, Cobra, any Shelby or Boss Mustang sell for today compaired to it's original price?
Just imagine what the deaker's "adjusted market value" will be on a new Ford GT though!
Ok so when did true high performance vehicles become inexpensive?
Price doesn't matter with regards to the Ford GT...if you can afford to buy one you could enjoy driving it for years and then sell it for MORE than you paid for it when it was new. What does an original GT-40, Cobra, any Shelby or Boss Mustang sell for today compaired to it's original price?
Just imagine what the deaker's "adjusted market value" will be on a new Ford GT though!