Stop in for a cup of coffee
The 2492 is for a 3 1/2" - 4" bore...
The 2493 is for a 4" to 4 1/2" bore...
Sometimes they come in the blister pack, sometimes they come in a box....
the 360 is right in the middle of those, so you can pick either one. But if you use the 2493, then it will fit most engines 340/360 and up...
I believe that they are 120 grit. I have had good luck with them. The rings will smooth out the bore as needed on break in...
Moly rings break in faster and will last longer on a street car.
The 2492 is for a 3 1/2" - 4" bore...
The 2493 is for a 4" to 4 1/2" bore...
Sometimes they come in the blister pack, sometimes they come in a box....
the 360 is right in the middle of those, so you can pick either one. But if you use the 2493, then it will fit most engines 340/360 and up...
I believe that they are 120 grit. I have had good luck with them. The rings will smooth out the bore as needed on break in...
Moly rings break in faster and will last longer on a street car.