motor vibration

[67Vette427]

Here's a link to what Summit offers but from what I see they're 10.50". You can still use the 11" housing. Its probably cast iron anyway and stronger than the aluminum 10.50 " housing. Looks like you need to get the smaller clutch too .

http://store.summitracing.com/egnsearch.asp?Ntt=flywheel+external&N=115+4294908110&Ntk=KeywordSearch

[Robb]

Its confusing... Cast cranks = externally balanced           Forged/Steel = internally balanced.  You need an externally balanced flywheel.

TO ADD TO THAT CONFUSION,

You need a flywheel that is externally balanced that is NOT for a 6 pack motor.

You cant overstate the year of the motor when dealing with the suppliers.  Or else youll get the first thing the part-picker finds.




McLeod Industries
1600 Sierra Madre Circle Dept. CHP
Placentia, CA 92870
(714) 630-2764
www.mcleodind.com   (under construction)

[Chryco Psycho]

there are 2 - 11" systems , the larger 143 tooth & the smaller 130 tooth , I never use the 10.5" clutch on a 130 tooth flywheel as the 10.95" [ 11"] bolts right on
the 143 tooth flywheel uses a different belhousing than the 130 tooth
 I do not know of a cast crank flywheel for a 143 tooth system , any flywheel can be balanced to work IF you have the crank rods pistons all balanced with the flywheel & damper while the engine is apart

[moper]

If your crank is cast, there is no factory flywheel for you that will correct the imbalance you have now. Factory stick cars and trucks would have forged cranks, even 400s. And that situation HAS to be corrected. Whether it feels bad or not, you can destroy and otherwise good engine in a few miles running it that far out of balance. IIRC, there was a Mopar Chassis Manual that had where to drill and how much to remove to make a factory nuetral convertor the proper weight for a cast crank. In terms or "ease", the aftermarket cast crank flywheel is probably it, if the $$ is available.

[tactransman]

Moper , you were right , here is the info 

READ THE BOTTOM PIC FIRST.

[tactransman]

more:

[70challengerrt]

So if I get this flywheel  RAM-1583 from summit every thing should be good right?                                                    http://store.summitracing.com/egnsearch.asp?Ntt=flywheel+external&N=115+4294908110&Ntk=KeywordSearch

[70challengerrt]

I posted to quick sorry. I get excited when I can see a solution in sight! I could just take my flywheel off and get it drilled to match the diagram that tactransman posted correct?

[70challengerrt]

Would I be able to use  a 360 flywheel from 74? From what I am reading on other web sites it is an 11" and is externaly balanced.

[Robb]

Call Mcleod and you can get the "right one" for a cast crank 440, bolt on.   Pretty simple.     

[moper]

Call Mcleod and you can get the "right one" for a cast crank 440, bolt on.   Pretty simple.     

As far as labor, and definate fix..I'd have to agree with the above. It would be a shame to pay to have this drilling done, and find out after it's all in that is wasnt done quite right, and it still shakes. I've never seen a flywheel modified like the diagrams say, and to be honest, the way I like to drive, a better flywheel is probably a good idea anyway. But, technically 70, yes, have a shop drill the neutral balance flywheel you have just like the pisture there, and it should be perfect for you.

[ShelbyDogg]

I'm working on the same type setup. Putting a flywheel on a cask crank 440.   Here's what my balancer told me to do.  Buy the offset flexplate for automatic torque converters from summit.  He will put it on his balancer to see where the weight is. He will then drill my flywheel to get the same amount of unbalance (12.9 oz) to match the flex plate. I then send the plate back to Summit.   No more shakes!    A friend of mine had a cast crank 440 with the wrong balancer and flywheel on it.  He said it shook so badly that he couldn't see out the rear window!   I put in a steel crank 440 and 833 overdrive in for him and I now have a free cast 440.

Rob

[tactransman]

Would I be able to use  a 360 flywheel from 74? From what I am reading on other web sites it is an 11" and is externaly balanced.

You can't use the 360 one , it has a different amount of weight balance to it.

[Chryco Psycho]

440 source has new billet flywheels with no offset balance for $140

[Robb]

I'm working on the same type setup. Putting a flywheel on a cask crank 440.   Here's what my balancer told me to do.  Buy the offset flexplate for automatic torque converters from summit.  He will put it on his balancer to see where the weight is. He will then drill my flywheel to get the same amount of unbalance (12.9 oz) to match the flex plate. I then send the plate back to Summit.   No more shakes!    A friend of mine had a cast crank 440 with the wrong balancer and flywheel on it.  He said it shook so badly that he couldn't see out the rear window!   I put in a steel crank 440 and 833 overdrive in for him and I now have a free cast 440.

Rob

Did he give you an Estimate for all that work ?   Curious what it would cost.