I will finally finish assembeling my 383 this week but notice something unusual yesterday. I bought a Centerforce steel flywheel. Its a ctf-700175 PN. Summit claims that its a externally balanced flywheel made for internally balanced engine. Does that make any sense??? My stroker is internally balanced so which flywheel should I have bought? For external balance or internal balance. Would it be fine to run an internally balanced engine with a balanced flywheel? Im confusing myself reading back my own post so let me know if this makes no sense to you guys.

 

MCL-460350, from summit. It's pretty $$$ but it's 0 balanced and it's a Mcleod.

 

If your 383 is truely internally balanced, then you need a neutral balanced flywheel.

 

The stock lt1 is internally balanced at the front and externally at the rear. The Centerforce flywheel is most likely balanced for a stock engine. You will have to have it neutrally balanced.

 

Both the McLeod MCL-460350-1A and the Centerforce CTF-700175 show that they are neutral balance style flywheels. The only difference is that the Mcleod shows for internal balance and the CF shows external balance.
Damn that sucks! So maybe I bought the wrong flywheel but what I really want to know is even though that flywheel is balanced will it affect the balancing of the engine? If both are balanced why would it make a difference.

 

The flywheel has a counterweight attached to it so it's balanced to the motor which is externally balanced to the flywheel.

If your motor has been internally balanced, in another words they balanced it without the flywheel then you will need a neutrally balanced flywheel without the weight on the flywheel.

 

I didnt notice any kind of weight on my CF flywheel but I will check again. If there is a weight on it can I just grind it off?

 

The weight should be held on by screws/bolts

If I were you, I would take the flywheel to the nearest machine shop and ask them to make sure it is neutrally balanced.

Even if you weren't sure if you had the right flywheel, I would do that. My mcloed flywheel was 15 grams off when I took it to the machien shop and had it matched to my old flywheel. and it was externally balanced from a very reputable company.

Do it right, take it to a machine shop. It's better to do it right once, then to half a** it once, fix it, and do it again.

 

Your right I will do that

 

The MCL-460350-1A is actually externally balanced, had one delivered and sent it back. You want the MCL-460350.