Stock flywheel weight
Thread Starter
Racer
Joined: Jan 2005
Posts: 250
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From: Fort Lauderdale/Miami FL
Stock flywheel weight
I have a modified 03 Z06 that I am swapping the clutch & flywheel out of & replacing with a Spec 3+ clutch & steel flywheel. I'm told the steel flywheel weighs about 21 pounds & that I will feel a noticeable difference in acceleration/responsiveness in the vehicle. What is the weight of the stock flywheel & clutch? I'm a cam-only car (232/236 .595/.602 114 LSA) on LG headers, no cats, corsa exhaust & Vararam intake, with a very good tune. Putting down 425rwhp/385rwtq right now. Any opinions on the difference I should expect? Weight figures? Thanks. 
- Matt
- Matt
Banned Scam/Spammer
Joined: Jul 2006
Posts: 2,911
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From: Simi Valley CA
Lightened flywheels only require a slightly different 'take-off' from a light. Just a tad bit more RPM. After a week or two, you won't even notice you're doing it. I had a couple of cars (not vettes) that I did that in. The motor does rev faster, and that's what you're looking for. The "mass" of the heavier flywheel helps keep the motor from bogging down at take-off.
Drifting
Joined: Jun 2004
Posts: 1,627
Likes: 143
From: Goodyear Az
The stock flywheel weighs 23.3 lbs per this source, which also discusses lighter than stock flywheels:
http://www.jakelatham.com/C5/misc/faq.shtml#3-7
http://www.jakelatham.com/C5/misc/faq.shtml#3-7
Team Owner
Joined: Mar 2001
Posts: 25,889
Likes: 7
From: Virginia Beach
CI 3-5-6-7-8 Veteran
^ Automatics don't have a flywheel... they have a flex plate.
I have a LUK stage II w/ a Fidanza aluminum flywheel. It weights 14lbs vs. the 25 for the stocker. Noticeable difference in acceleration.... no i ssues w/ street driving as far as take off at all. Even when driving my father's stock clutched '04 Z-16 back to back.
The car does shimmy at idle a little more due to less rotating mass.
I have a LUK stage II w/ a Fidanza aluminum flywheel. It weights 14lbs vs. the 25 for the stocker. Noticeable difference in acceleration.... no i ssues w/ street driving as far as take off at all. Even when driving my father's stock clutched '04 Z-16 back to back.
The car does shimmy at idle a little more due to less rotating mass.
