In CL14 there is no cl-kernel. As before, calculate-sources kernel installs from a binary package or compile and install by package manager directly. Using templates, you can make changes to the kernel config.
If you want to build kernel with own config:
echo "sys-kernel/calculate-sources -minimal -vmlinuz >> /etc/portage/package.use/custom"
emerge calculate-sources
cd /usr/src/linux
make distclean
zcat /proc/config.gz > .config
make oldconfig # or make menuconfig if you want change kernel options
make
make install
make modules_install
emerge @module-rebuild
dracut -H
cl-setup-boot