Looking to hear some feedback if anyone had used. Been searching around trying to find hard numbers on the benefits and only found one article with two corvettes on a dyno.

Having my new shortblock done and for balancing they need the balancer and the flywheel. My car is currently up at my fathers house, and its cold outside. I don't feel like ripping the trans out and pulling the flywheel to send it to the shop. So my choice is to rip the one off my car, buy a stock one, or buy a performance aftermarket one, and a Lightenened flywheel has always made think "that would be nice".

I drive the car about maybe 5000 miles a year, mostly to events, shows, track stuff, and would like to get more heavily into Auto-X and HPDE events more than anything. I care little about how the mods affect its Drag Racing performance compared with how the mods affect its AutoX/Circuit performance.

Now the lightened flywheel, thats $450, which is a somewhat significant chunk of change. But its 11.5lbs and that should make quite a noticeable difference in how fast the engine accelerates.

So here's the hard numbers I've found after googling like mad. A 04 Z06 was tested on a chassis dyno with the stock flywheel/clutch. And took 14 seconds to go from 2000rpm to 6500rpm in 4th gear. The lightened flywheel/clutch setup was installed on the same day and the engine and it only took 11 seconds to reach 6500rpm. Thats a very significant change.

The 2nd Corvette was a heads/cam car that gained a very little, only about 1 second difference, much less significant.

http://www.vetteweb.com/tech/0407vet...l_information/

So I guess the real question is for me is the advantage of the lightweight flywheel worth the $350 over a stock flywheel since I'm not going to freeze my butt off getting the existing one off my GTA right now in the middle of January.

 

You may want to read multiple articles rather than the one that makes you happy.

Your linked article:

• Used hogwash calculations to make the Fidenza sponsor look good. Seconds to reach max horsepower? What the blue hockey puck is that? Max horse means squat. Torque under the curve where the engine spends time matters
• "First up was the new ZO6, which produced 357.3 hp and 351.8 ft-lb of torque on its third run..........Our best of three runs netted 366.6 hp and 360.4 lbs of torque-" So they use whatever runs they want in order to make the flywheel look like it actually did something. What peak numbers did it put down on the first two runs? What were the other two runs? If the worst of the second set of runs was 360hp, then 2.7hp between before and after means nada

That article is about as far from peer-reviewed, double-blind, and relevant numbers as it gets.

You're looking for someone to tell you to buy Fidanza. You should go for it. Because you've already convinced yourself of it rather than deciding in any capacity of critical thinking and it's clear no one is going to tell you differently.

(a stock 93-97 flywheel would be good to send for balancing.)
Have fun!

 

You seriously need to re-read that. Your post is hogwash. I wrote that the first test produced a significant gain in terms of acceleration with the stock Z06. But I also wrote that the modified Vette gained very little from the lighter flywheel/clutch assembly. Aka, I'm looking for MORE hard information. Before posting I had already spent nearly 1 and a half hours googling, looking for actual data from tests vs the threads that all said "Yeah it made a difference.". I know it makes a difference, I posted because I had hoped that OTHER people could have pointed out hard data that I haven't found yet.

I don't care WHO makes the flywheel as long as its not going to fly apart and cut my ankles off. I only said fidanza because thats the flywheel they used in that specific test. If you think I'm all about the fidanza flywheel vs other brands then your a troll looking for a fight.

Let me use a different power measurement here to get HP off your brain.

Lets say you have to do two sprints. You are sitting on an exersize bike, and it has a 50lb flywheel attached. You to pedal as hard as you can until acceleration stops and you reach say 1500rpm and the time is recorded as say 10 seconds.

Now, they change that flywheel out for a 25lb flywheel and you do it again, this time it only takes 7 seconds for you to reach 1500 RPM.

You haven't gotten stronger at all, you are just moving less mass. Same concept as a lighter flywheel.

 

Currently going through the same consideration as far as 'which flywheel'. I will however say, if you don't have to have 'external balance' then don't. I see your current motor is an lt1 which i know is an external balance motor, is the new motor the same? Not all motors 'have' to be external balance!

As stated i too have been considering which flywheel and i was leaning towards the Ram aluminum. After driving a 4th gen and a mustang this weekend with aluminum flywheels i didn't find any issues engaging either one. Both cars were 500+hp. Mine is well UNDER that and i was advised to stick with the steel flywheel. If i remember correctly the oem flywheel for my car was 35 lbs.. The replacement GM Performance flywheel i have in there now is 26 lbs.. Now am leaning towards the Spec steel at 25 lbs. for my T56 conversion.