Which flywheel do I need?

[Chillin014]

the one post you made was a little confusing. are you suggesting that regardless of the internal balancing I could still have either a weighted or not weighted flywheel?

 

[pontiacgp]

"it's easy to tell if you need a weighted or neutral balanced flywheel or flexplate....if there is a counter weight on the end of the crankshaft outside of the oil pan then you use a neutral balanced flywheel or flexplate... if there is no counter weight then you use a weighted flywheel or flexplate...all cranks are internally balanced the same and they either need the counter weight on the end of the crank to balance the crank or a weighted flywheel or flexplate...the weighted flywheel and flexplate are said to be external balancing of the crank but by definition the counter weight on the crank is also externally balancing the crank

on a 400 tho the weight is heavier on the flywheel and flexplate and there is also a weight on the harmonic balancer as it's crank was the only crank that was really externally balanced"

I don't know if your referring to that as being confusing but it seems to be clear to me...

is this the engine you have?...

http://www.alibaba.com/product-free/103 ... s_290.html

 

[Chillin014]

I dont know if that motor is identical to mine, but I do have a Goodwrench 350 in it, something the previous owner had done.

As far as I've read you can balance the crank with the flywheel AND pulley/harmonic balancer. If you are referring to a counter weight on the front of the crankshaft, I will have to check that out. As far as the flexplate counterweight goes, I would have to take everything apart to find out. You say "outside of the oil pan" I dont know where you are referring to, the front or back. I dont know of a "counter weight" that is its own component and not attached to the flywheel or harmonic balancer

 

[pontiacgp]

take a look at the flange where the flywheel bolts to the crank....if it has a counter balance weight attached to the flange then you need a neutral balanced flywheel...if there is no weight on the flange then you need a weighted flywheel.

I guess you missed that post.....

 

[Clutch_Grabwell]

As far as I've read you can balance the crank with the flywheel AND pulley/harmonic balancer.

Only the 400 requires a counterweighted flywheel AND harmonic balancer.

If you are referring to a counter weight on the front of the crankshaft, I will have to check that out.

The are no counterweights on the front of the crank. That end is just a snout.

As far as the flexplate counterweight goes, I would have to take everything apart to find out.

You seem to be certain that you have a two-piece RMS motor. Therefore, your flexplate has no counterweight.

You say "outside of the oil pan" I dont know where you are referring to, the front or back. I dont know of a "counter weight" that is its own component and not attached to the flywheel or harmonic balancer

We're referring to the the crank flange where the flywheel/flexplate attaches. When you remove your flexplate, you'll see that the flange isn't round. It's heavier (counterweighted) on one side. The bolt circle is round but the overall flange isn't.

 

[Chillin014]

okay thank you, it is clear now! I can see clearly now that the rain is gone.

I guess a picture could have helped but I cant find one either so whatever. I am "confident' I have a 2 piece rear main seal based on information I've looked up on the casting number. If anybody feels I should have reason to doubt this, speak up now! I'm about to purchase a flywheel from a pre 86 camaro this week hopefully.

 

[pontiacgp]

I'm almost scared to ask...what are going to install for a clutch pedal?

 

[Clutch_Grabwell]

I'm almost scared to ask...

Be afraid... be very afraid.

 

[Chillin014]

I'm almost scared to ask...what are going to install for a clutch pedal?

I'm actually going to make my own. I figure its just a rod with a piece of rubber on the end, right?

 

[pontiacgp]

yup you got it...lol

I should have never asked....