Allison 5sp: Broken flex plate????

[JustinD]

I have been away this past weekend, I had my buddy pick me up and I noticed my truck making loud noises, it comes from the bellhousing and only makes noise when the truck is idling (no load) as soon as I touch the throttle it goes away, if I stop when in gear I can hold a little throttle and brake and there is no noise? Do I have a broken flex plate or the bolts falling out? I gotta replace my converter this week anyway (bought a higher stall) but I just wanted to know how common it is and if there are any aftermarket upgrades for this??

 

[wikdlmm]

Hope it's simple man good luck!

 

[specialagentPK]

Is it like a piece of metal vibrating on another piece of metal?

 

[sweetdiesel]

Sounds just like mine did when I cracked mine

ATS and I think Banks make a billet plate....I just went stock again

 

[JustinD]

How much did you pay for a stocker?

 

[Mike L.]

How much did you pay for a stocker?

I think they are around 120.00.

 

[DmaxHawk]

Sounds like what happened to mine. Ovaled out the bolt holes and eventually snapped the bolts off.

 

[specialagentPK]

Nobody answered my question does it sound like a high speed tin rattle?

 

[sweetdiesel]

Nobody answered my question does it sound like a high speed tin rattle?

kinda, its a scary sound untill you know what it is

 

[sweetdiesel]

I think they are around 120.00.

ya something like that
Henry(Ripmf666) is a vendor on the site and can hook you up


you will need new bolts also

 

[othrgrl]

Loose converter bolts will make a whole lot of noise as well. If you plan to change converters I would wait until you pull the trans, inspect the flexplate and then make sure you torque the TC bolts to spec when you put them in.

 

[JustinD]

Ok, thanks guys I'm pulling the trans this week.

 

[MadMaxx61]

well I would go stock for now as the ATS one is $785.00 and I am sure the Banks would be not cheap too. Unless you are making a max effort truck.

 

[JustinD]

Yeah probably gonna go stock for now. Our trucks have a flywheel and a flexplate correct? It looks like the ATS and Banks units are just a flywheel?? It seems a little weird I am used to the converter bolting to the flywheel like a SBC.

 

[racinmike77]

Yeah probably gonna go stock for now. Our trucks have a flywheel and a flexplate correct? It looks like the ATS and Banks units are just a flywheel?? It seems a little weird I am used to the converter bolting to the flywheel like a SBC.

I think the flywheel is the flexplate. The piece the converter bolts to is the same thing that the starter engages to start the engine. So call it a flexplate/flywheel?

 

[Mike L.]

I think the flywheel is the flexplate. The piece the converter bolts to is the same thing that the starter engages to start the engine. So call it a flexplate/flywheel?

It's a flywheel. It no longer flexes.

 

[ripmf666]

The part you think you broke is # 25 you will need 8 of #24 they have to be replaced can not be reused. On eguy on here had to get 19 and 25.

 

[JustinD]

I got a flexplate, local salvage yard had some DMAXES!!

 

[ripmf666]

I got a flexplate, local salvage yard had some DMAXES!!

Just make sure it came off a 01-05.did you just get # 25 they part #is 97225899

 

[JustinD]

Yeah it off an 02 I believe, I will double check. Thanks