Flywheels

[392Charger]

Can anyone tell me if 318 and 360 flywheels are interchangeable?

 

[js29]

No and nether will the harmonic balancer work, the crankshaft is balanced differently

 

[Chryco Psycho]

I agree although if the entire rotating assy is out of the block it could be balanced to work . but new flywheels are cheap enough from McLeod or Brewers

 

[moparleo]

Mallory metal required for internal balance is very expensive.

 

[Chryco Psycho]

Only if the weight stays the same , by using lighter pistons & rods all the weight can be reduced so no mallory is required

 

[moparleo]

True, but he was only talking a flywheel replacement.

 

[392Charger]

Recently put my "mostly" 73 Cuda back on the road and I am currently working some bugs out of her! One issue I could use help with is the tranny. She has a 727 behind a 340 six pack and it was rebuilt about 5 years ago, when you apply light throttle (hard to do!) after coasting it has a run away effect. Give it a lot of gas and it kicks in and goes. Where do I start?

 

[392Charger]

BTW, it doesn't automatically kick down.

 

[moparleo]

What does "run away effect" mean ?

 

[Chryco Psycho]

You should start a different thread for thsi
Anyway if it doesn't kickdown it may have adjustement problems or more likely the valve body has been reworked to semi or fully manual .
it also sound like you have a high stall converter so when you lift off the throttle the rpm drops & the converter unlocks so it feels like it is coasting until you get back on the htrottle & bring the rpm up again .
SO you probably need a different converter but this could kill the performance off as the converter may lock in before the engine is into the powerband making it very sluggish at lower RPM

 

[392Charger]

Sorry for wrong title. Still learning how to navigate this site. I will repost. And thank you for the insight.

 

[moparleo]

Is this a different car ? The first post is asking about a flywheel and then later on you talk about a 727 .

 

[Chryco Psycho]

I too am confused , the flex plate will swap between 318 & 360 as it has no effect on balance

 

[moparleo]

Whoops!
http://www.summitracing.com/parts/bmm-10236/overview/make/dodge