This RAM 1525 Billet Steel Flywheel is recommended as a replacement for the factory Cast Flywheel in your high performance or race Mustang.
The stock Cast Flywheel is not explosion proof and can be dangerous when used in your high performance Mustang at higher RPMs. This RAM Billet Steel Flywheel is CNC machined from certified materials and exceeds SFI specifications.
After machining, the Flywheel is blanchard ground parallel to the crankshaft mounting surface ensuring minimum runout and the optimum mating surface for the clutch disc.
Use a Billet Steel Flywheel in a heavier drag race Mustang or for the best driveability in your street driven Mustang.
Flywheel Selection Note: Use a Steel Flywheel on street/strip Mustangs & use an Aluminum Flywheel on race oriented Mustangs that have 4.30 or lower gears or on road race Mustangs that spend most of their time in the upper RPM range & need quick acceleration out of the corners.
Flywheels are covered under 30 day Manufacturers warranty and are STRICTLY FACTORY WARRANTY ONLY. Customer must return the unit to RAM for evaluation and inspection.
Mustang Flywheel Tech Info (Fox 79-93)
Mustang Flywheel Tech Info (Fox 79-93)
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Published on 2014-10-24 We know all too well how difficult and confusing it can be to match a flywheel with the appropriate clutch. However, we break down the pros and cons of cast iron, billet steel and billet aluminum pressure plates to guide you down the right path when making your purchase.
Works great! The billet construction and SFI rating give me piece of mind that it's not going to grenade and modify my feet. I'm very pleased with the feel and have not had any noticeable impacts to the speed at which the engine revs up or down compared with the stock cast iron flywheel. My stock resurfaced cast-iron flywheel weighed in at 19.6 lbs while the RAM billet unit weighed 28.0 lbs.
I installed this during a complete clutch job including a new RAM HDX clutch & pressure plate, Ford Racing clutch fork & cable, steel input bearing retainer, Ford Racing pilot bearing & clutch release bearing, clutch fork pivot stud, new ARP flywheel bolts and new pressure plate hardware. What started the whole ordeal was a blown tailshaft bushing, so I also replaced that along with the tailshaft seal and switched to a Ford Racing aluminum driveshaft.
Installation overall was very easy. I did have to sand down the flywheel side of the dowel pins that came with the M64397A302 kit to get them to go in (were 0.3165", needed 0.3140"). I'm not sure if the imprecision was on the flywheel or the dowel side, but I suspect the dowel. Regardless, 5mins with some sandpaper to the dowel pins and it was good to go.
I've got about 1800mi on the new setup and it is night and day compared to my old setup. I bought the car with 122K mi on it last year and it had a King Cobra clutch & pressure plate with about 10K mi on it. It still had the original everything else and a resurfaced flywheel. The pressure plate and flywheel were blue/purple hued due to heat hardening and had significant surface checking.
With such a huge part exchange, this isn't a good A/B test, but as part of the new complete package, I'm very happy!
Ram - Clutches, Clutch Kits, & Billet Flywheels
For over 35 years, RAM has produced the world's top performing competition and street performance clutch systems. They have developed, improved, and produced in house, tried and true clutch components and systems that provide the highest performance value for your Mustang. Today, every RAM product incorporates critical features that are absent from many of the products of those who choose to compete with them. Shop Latemodel Restoration to get performance RAM clutch kits, flywheels, and pressure plates.