Aluminum or steel flywheel?

Topless03Cobra

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Hey quys im ordering a spec stage 3+ and i was just wondering which flywheel would be better, the aluminum or the steel flywheel. Thanks
 

cobra=trouble

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subn here too in same boat!

i got spec 3 plus. but not installed yet, waiting to drop motor and trans out,

i do know that alum. f/wheels are subject to bog if not enough gas is giving to start off ..steel have more innertia behind it,. but motor wont rev up as quick!
 

Jomo1994z71

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Do a search man. when I was wondering what to go with, go plenty of info.
Decided Steel b/c of the heavy car and couldn't be happier
 

bubblehead93

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just for the record, your stock flywheel is aluminum - your choice of aluminum versus steel should be based on what you plan to do with the car. concur with recommendation, do a search, topic has been discussed alot with alot of good info.
 

cobra=trouble

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i got a vert yes weights 3660 w/1/4 tank of gas w/ no driver, with SRA i weight appx 170 lbs so with full tank of gas luggage and wife well over 4100 lbs.

and i not an every day drag racer. i think the steel one is for me. would rev up that quick like alum one.or blow the tires off at will .
 

RGrossman

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I went with Steel with my Spec 3+ and after 1k miles, it drives 100% perfect, no chatter, light pedal, just awesome.
 

SlowSVT

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A heavy flywheel will only benefit the car leaving the line until the clutch locks with the flywheel. From that point on a heavy flywheel will be nothing but a drag on the engine and will reduce hp. The Terminator has a boatload of low end and doesn't need a heavy flywheel.
 

9secondko

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What is the weight difference between the aluminum and steel flywheel?

I just bought the Fidanza aluminum one.

Eventually I will get around to reducing the weight on my car by a couple of hundred pounds. easy weight loss including the exhaust mid pipe and catback, battery switch to dry cell. then, some other things like UPR K, aluminum shortblock, etc.

I am just curious. I had considered the steel one as I always thought it was strange how my car with so much power had to rev a little to get going, but I read that the aluminum allows is to put more power to the ground, whereas the steel soaks it up a little. anyone know the weight difference?
 

RAPTOR5V

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What is the weight difference between the aluminum and steel flywheel?

I just bought the Fidanza aluminum one.

I heard it was like ~15 lbs from a friend dont know if thats accurate.

I have a brandy new spec 2+ and fidanza alum flywheel Im still breaking in feels grreat so far.

I went with aluminum b/c thats what the car came with stock. :shrug: wanted to keep it the same thats all
 

707svt

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The stk one weighs 12-15lbs the forged steel is 25lbs, I did a swap and a steel one will take more of a beatn longer life, and u can replace the disk on it instead of the whole flywheel, you cant with aluminum. I hear with high HP alum ones can brake. Mine is a fidanza fly forged steel and its great you wont notice no differance. IMO these motors will have no problem spining a heavyer flywheel.
 

black 10th vert

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The stk one weighs 12-15lbs the forged steel is 25lbs, I did a swap and a steel one will take more of a beatn longer life, and u can replace the disk on it instead of the whole flywheel, you cant with aluminum. I hear with high HP alum ones can brake. Mine is a fidanza fly forged steel and its great you wont notice no differance. IMO these motors will have no problem spining a heavyer flywheel.

I agree with most of what you said, except the are I highlighted. Most aftermarket aluminum flywheels (like Fidanza, for example) have the replaceable steel friction surface, so that is a non-issue.;-)
 

Evil Bender

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I have the Ford Racing Steel flywheel (33LBS) and love it for daily driving ,so much less RPM to get moving,less chatter less sliping the clutch to get moving.
 

707svt

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I agree with most of what you said, except the are I highlighted. Most aftermarket aluminum flywheels (like Fidanza, for example) have the replaceable steel friction surface, so that is a non-issue.;-)

Ur right, its Fidanza u cant replace it on the steel ones, Spec u can.
 

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