If you are spinning your engine above 7500 rpm it is recommended to
replace the stock balance shafts with neutrals or to completely remove
them. These bushings are used to plug the balance shaft oil feed holes
in the block. They have a 5/8"-18 thread so you can install them with a
slide hammer and remove them the same way if you want to go back to
stock. They are made from 6061 aluminum.
When you install these in the block you have two options. If you are
running an electric water pump you will need these two bushings and our front balance shaft plugs. You can then delete the short chain completely. If you are running the stock
water pump you will need to retain the short chain. We do this by
machining off the front part of the stock balance shafts. They are then used as an idler for the gear to ride on. These are available for an
extra charge as an option.
Core returns have to be received
within 30 days for a refund. Outside of 30 days we can only offer store
credit. Cores must be in good usable shape to receive your refund. A
good core will have no damage to the threads or bearing surface. If your
fingernail can catch a groove on the bearing surface that shaft is no