2011 GT500 vs C6 Corvette Z06

Bone stock '11 GT500 vs K&N + Catback tuned by Jack @ HP Logic

[bocajuniors]

The new 2013 GT500 might have 650hp now but adding an extra 100 hp doesn't help solve the Cobra's problems. The Corvette is refined in every aspect. The Vette is a real sports car and takes the crown in my opinion. (I love both cars)

[christophurrr]

@nealskiv6 Modded to the max vette? I didn't know bolt ons were considered SERIOUS mods now.

[LieKiller]

@nbmblownZ I'm saying there are no block strength differences between PWTA coatings and cast iron dry sleeves. MMR sells WET sleeved (Darton) blocks as a way to get a 3.7" bore from the 5.4 iron block, the iron block 4.6/5.4 can't be taken to a 3.700" bore like the aluminum blocks can. The only iron Modular block that can accommodate the 3.700" bore is the FRPP Boss block, which isn't offered in the 5.4 deck height. Dry sleeving AL blocks depends on the builder, usually about $1, 000.

[LieKiller]

@nbmblownZ Nissan uses the PWTA cylinder coatings (which they licensed from Ford) in the GT-R. BMW among others have been using Alusil and Nikasil cylinder linings in lieu of pressed in cast iron liners for years.

[LieKiller]

@nbmblownZ Quote from article, "A supercharger is a fixed entity in that the unit moves a specific volume of air at a given impeller rpm. Keeping blower speed identical is essential in a true A-B comparison. We're comparing stock heads versus ported heads, so why change the blower output? Upping blower speed would mean we changed two components instead of one. The extra airflow proved to be worth 32 rwhp, as power increased from 454 rwhp to 485. The boost reading dropped a few pounds..."

[MrJoevette]

love the go pro on the vette, seems vettes always point theres to the rear hahah

[LieKiller]

@LieKiller P.S. the pulley can be a smaller diameter supercharger pulley or a larger diameter crank damper...or both. Same (or compound) effect. Auto swapped GT500s don't need spray to go 9s.

[LieKiller]

@nbmblownZ Yes, and what is backpressure measuring...restriction. What you seem unable to comprehend is that if boost DROPS due to an increase in cylinder head flow that means one thing and one thing only, more air is making it into the cylinder per intake valve event thus a reduction in backpressure. Even when total output from the power adder remains constant, a reduction in boost via an increase of airflow = more air = more fuel = more power every time.

[kageryu]

@need2speed94 GM is already looking at putting the 5.5L C5R block in the C7.

[Mercskowski]

@zacheryds That's correct, in terms of the specs for the GT500. The Super Snake, however, I'm not sure about.

[LieKiller]

@nbmblownZ ...and that cost is re-sleeving the aluminum block to take it from 3.552" to 3.700". You're not going to score a NEW 5.4 aluminum block (Ford GT or '11-up GT500) for $1, 000, you'd have to land a deal on a used one somehow.

[LieKiller]

@nbmblownZ 581 rwhp does not equal 705 crank HP. It also had more than a simple boost increase, namely inlet and full exhaust (including headers). The point, which you conveniently missed, is that 4.2 psi by itself isn't worth anything close to 100 HP on an otherwise stock ZR1. That car had a 3 lb increase, including aftermarket supporting mods, and only picked up ~50 HP. Proof of "conservative tune"? What is the A/F, what is the timing, how does it compare to the stock ZR1 tune?

[ModMob]

@Haze5moke the AVG. 1/4 mi. time is almost the same. and the LS1's were rated at 325 but were closer to 350.

[LieKiller]

@nbmblownZ You can put underdrive pullies on the N/A Z06, like I said it isn't the GT500's fault simple pulley swaps are worth a lot more. And you're right, stock Eaton GT500s won't go 9s...with a T56.

[MrGT]

A 2011-2012 GT500 went 12.0 flat, bone-stock, with two cameras suction-cupped to the car. There's a video of it, I think the tests were done by either MM & FF or 5.0 Mustang and super fords, not sure which. The launch was the really tricky part, but an easy launch meant a quicker pass, and after a few passes, they got it to go 12.0.

I've NEVER seen a GS go 12.0 flat. Every bone-stock GS i've seen runs 12.7's or 12.6's. Some folks have gotten low 12's with DR's.

[LieKiller]

@LieKiller Sorry, NOT stock compression. Stock heads and chambers, but both were 9.0:1 engines. Both used Diamond pistons (different dish obviously, given the 4V chamber is 52cc versus 44cc for 2V) with valve reliefs specific to the different valve layouts. No need to discuss 2V vs 4V, I just gave you proof of ported head gains on a centrifugal 2V with the same exact pulley arrangement, only change being head porting (via Fox Lake). Considering this schooling free.

[Punisher]

Same here, i completely plan on my next vehicle being a 2013 GT500!

[kageryu]

@need2speed94 What you're not getting is the US Auto industry is getting scrutinized about displacement as well. Because of that, the C7 Corvette is going to use a smaller displacement V8.

[philritter]

I drive both these cars. An 09 Z06 and a 12 GT500. They can't be directly compared stock. The Z06 is brutally quick and a stellar handler. I get physically exhausted blasting through twisty mountain roads. It beats you up with the forces it subjects your body to. The GT500 is a heavier 4 seat muscle car. Dont get me wrong, its definitely a great car, but the Z06 is a far more capable sports car. However, I put bolt ons on the 500, and it really woke up. Straight line, they are about even now.

[LieKiller]

@nbmblownZ Wrong, both the 2V and 4V had intake lobes in the 222-224 degree duration range, both on 106 ILCs, both had 9.0:1 CR. The difference came from stock PI 2V heads flowing 175 cfm versus the stock 03/04 4V heads flowing 270 cfm. What it results in is more AIR making it into the CC for every intake valve event, IVEs being constant, this is why BOOST DROPS. More air makes it into the cylinder while the intake valve is open, more fuel is added, more power is found. Period.