my dad was out at my grandpas this weekend and he found 2 hays aluminum flywheel out there. i was wondering how much they are used and if anyone on here has one and if they noticed a difference. i also wondered what are the pros and cons of using aluminum to steel. thanks Ty.

 

if they are used, forget it.

they will help the engine rev faster, but a heavyer wheel will not loose as many rpms when shifting and usually launch better.

do you even know what kind of engine they are for and how make teeth they have?

 

they are for a 400 sbc and they are both 153 tooth.

 

anyone ever use an aluminum flywheel?

 

I've used a 153 tooth alum. flywheel behind a 400. It's revvier. On the street, I wouldn't necessarily go that light. I like the lighter (~16lb) 305 TPI flywheel just fine.

 

Aluminum flywheels are hard on clutches when used on the street without a steep first gear (total of 12 to 14-1) ratio. Once rolling, they are actually easier on everything else, and the car will accelerate quicker. They are great for road racing.

 

I'm using the above as well.

JamesC