Aluminum Flywheel or Steel????

[meangreen92lx]

Hey all. I'm going to be replacing the clutch and flywheel in my 1992 LX. I'm trying to figure out which would be the best way to go either getting an Aluminum or Steel flywheel. I've done a search everywhere I can and I'm still on the fence. I can't find any conclusive evidence one way or the other. My car is 99% street driven with the mods in the sig. I only drive it on nice days so it is not a daily driver. My main concern with the aluminum flywheel is taking off from a stop and any driveability issues. I have 4.10's so taking off may be ok but I really don't want any idle problems. I had my car dyno tuned 3 times to get the idle right so I'd hate to alter that somehow. I put a lighter stall converter in a buddys stang and it stalled all the time with less weight on the crank so I don't want the same problem. Has anyone experienced idle problems/stalling after an aluminum flywheel install? Would it be worth it for a HCI car such as mine or a waste? Thanks for any input!!!

 

[cenok is family]

i don't have one nor have i driven a car with one but rules of physics say lighter flywheel = less enertia allowing your car to rev higher.

 

[Grn92LX]

Aluminum!

LOVE mine in my pump gas drive anywhere street car
No idle problems, no stalling, no driving issues at all period

 

[meangreen92lx]

Aluminum!

LOVE mine in my pump gas drive anywhere street car
No idle problems, no stalling, no driving issues at all period

Nice car Grn92lx!!

Looks like mine

 

[wythors]

I'm getting ready to do an AOD/T5 swap and asked my local shop this same question last week. He recommended aluminum for my moderately built engine with gears. It doesn't allow it to rev higher, but to rev quicker.

 

[Mustang5L5]

I'm on the fence myself, but i usually say:

Steel for a drag racer
Aluminum for a road racer.


however guys who i trust tell me al AL flywheel on the street doesn't really have many neg effects, at least not with good steep gears in the rear. So i'm not really sure.

I beleive swapping from steel to AL does lose a little low end torque due to not having the inertia of the flywheel.

 

[86bluecobra]

I kinda like my steel flywheel specially for the starting and stopping on hills. That being said I would like to see a test done in 5.0L mag on which is better for drag racing and even hp and torque numbers right through the engines entire rpm.