For LS1/LS2/LS3/LS6/L92/LQ4/LQ9/LM7
Upgrade your block for maximum durability. Katech caps are positioned with two, 1/4-inch steel dowels rather than the OEM aluminum locating register walls.
We recommend using ARP Main studs with these caps, see link below.
PLEASE NOTE - Block machining required for dowel installation
