Hamutoff

Is a stock 5.0 mustang flywheel 20lbs?

For a daily driver should I get a heaiver one like 33 lbs, whats best between fuel miliage and comfort in stop and go traffic?

THANKS!

EDIT/Update: I got a cast Iron flywheel it was a paltry $87 hard to say no to that and this is my DD car, my other mustang will be the max effort street/strip mach. This one is DD & perhaps some handling/braking upgrades.
By the way it (stock for a 1984 F150 truck w/ ext balance) is 26lbs
It appears that the stock 5.0 flywheel is 21lbs, not too big difference to loose sleep over IMO
Here it is:

67mustang302

The lighter the better. Everyone I talked to with an aluminum that drives it on the street said it's not an issue. I plan on going with an aluminum flywheel the next time I change my clutch.

Hamutoff

Thanks! So do you say that its good to go for the 10lb units or would you think 15lb better for DD, or just a light billet steel unit? Is it true that the stock unit is 20lbs?

I have often heard both: that heavier than stock and lighter than stock are the best for Drag racing (I think it depends vars here), but I usually hear that stock or slightly heavier is better for DD, but I am open to help!

Looks like $500-$600 for the light aluminum on summitracing for my app range 10-20lbs
$320-$400 for the billet steel range 24-40 lbs

Thanks for the help

Jfsram

I think stockers are about 30lbs.

Lighter has many racing advantages. Many members on this forum are drag racing enthusiasts therefore you will havemany votes for a lighter flywheel. Fact is heavier is better for daily driving but I see no advantage than going heavier than stock. It also makes for a smoother idle but really, in a Mustang, is that really important?

For a low torque, drag car. The kind that leaves the line on the limiter and dumps the clutch. They can take advantage of flywheel inertia.

I have a 40lbs wheel in my Dodge Ram. No exaggeration here but as an example. I can rev my engine, kill the ignition and dump the clutch. It will lay rubber.
BTW, it's so smooth and easy to drive. It's made mea fan of heavy flywheels for trucks.

Boss_Hotrod

Ive got a Spec aluminum one in my 5.0. I dont daily drive it but when I do drive it somewhere (without beating the crap out of it) I am able to drive it comfortably. Im not the best with a manual either but I can control it. To be honest I think I stalled it more with the stocker than I did with the aluminum one. Also mine has a steel friction surface. It weighs 14 lbs. Its a huge difference compared to the stocker. I love it.

5spd GT

Ford Racing Iron Flywheel Stock Replacement – 21 lbs - 397-M-6375-B302
Centerforce Aluminum Flywheel – 11.9 lbs - CTF-900320
Centerforce Steel Flywheel – 27.6 lbs - CTF-700320
Fidanza Aluminum Flywheel – 13.5 lbs - # 186501

A lighter flywheel will create a little more finikal scenarios, but nothing you cannot handle.

67mustang302

Fidanza aluminums are like $360 for a SBF app at Summit/Jegs iirc.

Hamutoff

Thank you! Unfortunately, I am limited becasuse for my 1991 mustang hydraulic clutch application I need:
[ol][*]164 tooth for[*]11 inch clutch[*]28 oz imbalance[/ol]There is a 186511 ALUMINUM SFI FLYWHEEL in 164 tooth but I cant seem to find the balance weight on it! On the Fidanza site, I see that its external but not if 50 or 28 ounce

[ul][*]RAM-1505 RAM Billet Steel Flywheels 164-Tooth, 33 lb. $275.95[*]CTF-700240 Centerforce Steel Flywheels 164-Tooth, 34.2 lb. $299.95[*]MCL-463200-28 McLeod Steel Flywheels 164-Tooth, 25 lb. $329.69[*]RAM-2515 RAM Billet Aluminum Flywheels 164-Tooth, 18 lb. $449.95[*]CTF-900240 Centerforce Aluminum Flywheels 164-Tooth, 15 lb. $595.95[/ul]Are my choices on SummitRacing.com 463200 is the best price for least weight but what do you guys think given the above choices? (unless the Fidanza ends up being 28oz, or other choices are found)

THANK YOU!!!

mjr46

the fidanza aluminum flywheels come with the removable weight for either 28 oz applications or 50 oz sbf applications how do I know this??? cause my 66 and 85(when it was a 306) I bought two of the same fidanza flywheels for 250.00 a piece and they came with both external weights 50 for the 85 and 28 for the 66

67mustang302

And they sell them in 164t