[WhiskyV8]

when installing a fixed 2.85 upper how long do the bearings last before they start to get noisy and need to be replaced with high speed bearings? From what I've read people have had problems with the oem bearings and also others not have any issues at all. Im going to be taking the supercharger off anyways so I figured id just upgrade the bearings now so I don't have to deal with them in the future or should I just run it and see?

 

[areuriding]

It's gonna be hit or miss, one thing that will help is if you use a decoupling upper like factory.

 

[Linda's Hell Cat]

@areuriding is correct, it is hit or miss.
Luckily mine are still original from 2015 used for the track and Daily Driving.

Linda

 

[WhiskyV8]

might just run the oems then and see how it goes worst case I send the supercharger out.

 

[Rockster]

might just run the oems then and see how it goes worst case I send the supercharger out.

Have to mention you are worried about the supercharger bearings from adding an overdrive pulley. This is a valid concern. But you express no concern for any of the engine internals from the risk they run from being exposed to more HP.

If you think the supercharger bearings need upgrading what about the engine internals?

 

[WhiskyV8]

Have to mention you are worried about the supercharger bearings from adding an overdrive pulley. This is a valid concern. But you express no concern for any of the engine internals from the risk they run from being exposed to more HP.

If you think the supercharger bearings need upgrading what about the engine internals?

the internals are fine with a upper pulley on pump gas it isn't going to damage this engine unless very intentionally tuned to do so and guys like HHP, Dusterhoff etc have done god knows how many of these stage 1 setups without issue. People run way more radical setups than me on the stock internals and are perfectly fine and if I was messing with the internals id just make it a 426 and put a bigger supercharger on it.

 

[Himmelkat]

the internals are fine with a upper pulley on pump gas it isn't going to damage this engine unless very intentionally tuned to do so and guys like HHP, Dusterhoff etc have done god knows how many of these stage 1 setups without issue. People run way more radical setups than me on the stock internals and are perfectly fine and if I was messing with the internals id just make it a 426 and put a bigger supercharger on it.

I think it would be a wise investment just to get a separate engine built. No compromises. Heck, make it a loafing 480. Do what you want. Widen the bores and shorten the stroke. Siamese block. 3.0L Magnuson stolen from a Corvette kit and adapted to a Hellcat. You could experiment to your heart's content and then drop'er in.