ModularFox

what flywheel did the stock 5.0 89 mustangs use? was it an internal, external or neutral balanced one? anyone that can help thanks, i need a new one!

HACKGT350

stock was a cast iron one i would geta nice billet steel not aluminum they are for racing only

JeffUtica

50oz externally balanced.

gspfunk

50 oz. imbalance

Cast iron is stock, billet steel would be an upgrade. Don't go aluminum unless you're road racing.

Boss_Hotrod

There's nothing wrong with an aluminum one but I dont know if it would be good in a daily driver. We run one and we dont do any kind of racing. Its a lot of fun to drive though.

ModularFox

Thanks guys.

Boss Hotrod, did you notice any diffrence with the aluminum one? if so what changed?

gspfunk

The main difference is your RPM's will drop faster between shifts.

rocketrotary

gspfunk... Is it worth it?

Vic

Boss_Hotrod

I didn't really notice the rpms dropping. I guess its because we have the clutch engaging really high up so we can shift it in a hurry. It does rev a lot quicker. It also seems to have made the car jump a little better but that might just be because the tranny was rebuilt at the same time.

HACKGT350

one thing with the aluminum flywheel is that the wheel is so light it takes higher revs to get the car to move cause its spinning so fast and doesnt want to grab the clutch and will heat up to the point where the flywheel will start to loose peices into the clutch and destroy the clutch andyou can break things internaly like the crank as from the high revs just to get it moving get a billet steel much better for daily driving