im rebuilding a 91 ls motor, i need to replace my bearing but having trouble finding sizes i did check in the manual but cant figure it out. my rods have the number 3 stamped on them my cranh has the numbers a2 stamped on them and the color of my bearings brown and 1 is yellow? also if i went w/ acl bearing how do i match those up?? thanks

 

anyone??????

 

there is letters on the bottom of your block that you need to match up to the #s on your crank...same with the rods bearings

 

what about the colors?

 

after you matched the code on the block and crank/rods, then you can find the colors...here is an example

 

thanks