FEEDBACK ON ALUM FLYWHEEL

[daytonalo]

Has anyone installed an alum flywheel on a big block  , I figure going with an alum bell and flywheel will shave 100 lbs , and rev much quicker

[471_Magnum]

Not recommended on a heavy car (such as a Charger). Save the aluminum flywheel for a light race car.

You wouldn't save 100 lbs. Furthermore you'd want to run a Lakewood scattershield (if you value your feet) which would more than negate any weight savings.

[daytonalo]

The 100 lbs was with new keisler bell, flywheel and trans !

[Chryco Psycho]

it will kil the bottom end torque
I dropped from a 35 lb to a 25 lb flywheel on my race car & it killled the launch

[daytonalo]

Thank you

[CFMopar]

dont they make kevlar blanket scatter shields? might be lighter and cheaper...

[myk]

it will kil the bottom end torque
I dropped from a 35 lb to a 25 lb flywheel on my race car & it killled the launch

Why would that happen?

[Chryco Psycho]

Less inertia so when the clutch was released the engine was easier to stall down
my duster used to leave with the front wheels 3 ' in the air after changing the flywheel it would only lift them 20" or so , it helped that car as it didn1t hit the tires as hard & the 60' times were consistant but you could really feel the difference , dropping to 11# from 35 # would really hurt the launch 

[is_it_EVER_done?]

It depends on your situation. If you are going with a stroked engine, you will have enough torque to overcome the usefulness of a heavy flywheel, and may very well be able to get the engine to rev a bit faster, BUT ... a flywheel is like a brake rotor in as much as the heavier it is, the better it can deal with heat without warping. Lite is great for a race car, but terrible for a street car, and a heavy unit is better with a standard displacement engine.

If it's going to be used in a heavy car (Charger), and it's going to be used on the street, I wouldn't consider it just for the durability factor, plus you will never be able to tell any difference on the street w/street tires.

The aluminum flywheels will warp if you put too much heat into them, and even the ones with steel inserts will be far less durable than a heavy steel unit. I personaly use a steel SFI flywheel and a Lakewood bellhousing in my high torque street car. My opinion is that this is definitely not the place to try to save weight in anything less than a race car from both a safety and durability standpoint.

[daytonalo]

Steel it is , Thank you