Datsun350Z

iTrader: (7)

I went with a lightweight flywheel because

A. My car is alot lighter than most others..

B. Love that nasty fast rev..

Havent heard any videos of LS1's with lightweight flywheels, just revving. Wanted to hear what it sounds like because I have a "F1 Racing" 15 lb flywheel in my car and want a hint of how fast it should rev out.

The Alchemist

iTrader: (19)

I'm interested as well. I'll be installing a 12.5lb Fidanza flywheel along with an under drive pulley. Those two things should help it rev quicker but also come back to idle quicker as well.

Mac93

iTrader: (8)

Had a Fidanza flywheel on my car once. Wasn't a Camaro but I hated it. Launching at the track sucked!

Demonicbird00

iTrader: (17)

this is the best i can do for you guys now

http://content.godragracing.com/vids...emonicBird.wmv

its the spec aluminum flywheel

-brandon

The Alchemist

iTrader: (19)

If I remember correctly, the SPEC aluminum flywheel is a FIDANZA flywheel. Either that or both wiegh the same and make the same claims about SFI certs etc.

LSGunZ28

iTrader: (8)

I dont have a vdeo, but honestly It didnt rev much faster.. but I still felt a difference, but nothing huge...

I picked up 1mph in the 1/8 but it was also harder to get traction from a launch...

LSGunZ28

iTrader: (8)

... and stall quicker and spin your tires quicker

Demonicbird00

iTrader: (17)

ahhh never knew that, yeah they weigh the same i think

either way i like it alot and have been using it for 3 yrs now

1 QUIK LS1

iTrader: (4)

I was always told that they sucked for drag racing??????? Somthing about loosing tork down low in rpm's,hmmmm

MeentSS02

iTrader: (11)

You don't lose torque...the engine is actually free to generate more torque and power because it doesn't have to waste as much energy to spin a lighter flywheel. What happens, though, is that you lose the inertia, so you don't have as much stored energy to get you off of the line. This is evident by needing to give more gas to get going from a stop. You essentially have to learn how to drive your car all over again.

My clutch assembly saved 20 lbs over my previous setup, and it made a big difference. I don't have any videos of it revving, but I'll see what I can do.

Fast Toys Performance Parts

iTrader: (3)

Less reciprocating mass equals more HP available for acceleration.

Launching is a "tiny" bit harder but you get used to it. The concerns you hear about people having trouble launching is from the 4 cylinder crowd where they have no torque and the whole reciprocating assembly doesn't store enough energy to launch very well. 5.7 L motors don't have that problem.

We sell both the Spec and Findanza. Not sure if they are the same manufacturer but both do the job well.

I have one in my Camaro and it is noticeable that the engine revs faster and also returns to idle faster when the car is in neutral or you have the clutch in.

Grimes

iTrader: (3)

It's more of a bitch to park and do low speed things like k-turns, because you have less mass to work with. The engine will drop in revs much easier.

Mike96z

iTrader: (78)

I have the F1 lightweight flywheel but the only vid i have, is of my car back firing and a small rev.

Mike96z

iTrader: (78)

noticed this too, it needs more gas to get going.

The Alchemist

iTrader: (19)

Everyone who's complaining about it being harder to drive at low speed and harder to take off I guess hasn't driven many 4 cylinder sticks before.

Plus, anytime you add a cam on a 6-speed, it's the same thing. Low rpm has issues with generating enough vacum and you need to learn to drive a little differently.

I don't drag race, so taking off from a light is about the most I do. I mostly drive back roads and would like the extra kick from 2500-5500. Plus with driving on 19s, I've always had to modulate the clutch well because spinning the tires is a joke.

I'm looking forward to putting the flywheel in. I have a Mcleod pressure plate and disc, so I'll wiegh those as well to see what kind of weight savings/penalty I have over a stock setup.