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Original Message
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| RE: Flywheels for a 390 |
| By Gerry Proctor - 06/11/2003 6:30:38 AM; IP 207.133.188.254 |
The general rule is 10lbs of flywheel weight for every 1,000 lbs vechicle weight so 3,500lb car = 35lb flywheel.
But it can depend on how you'll use the car and if this is, as you wrote, a street/strip car you'll want to avoid the lighter flywheels and stick pretty close to the rule. Light flywheels allow the engine to rev very fast but they don't store a lot of energy and you need energy to accelerate mass from a standing stop. This means that the car can be difficult to launch and to recover following a shift. The more CI you engine has and the more torque it makes can overcome this lack of stored energy but you'll need to be over the 500ci level to even consider aluminum flywheels.
Lightweight flywheels are great for road race and circle track cars where 60 foot times mean virtually nothing and acceleration off the corner means everything. |
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