Board Thread:Theories and Speculation/@comment-38812954-20191012021224/@comment-43403813-20191012160631

I reckon he'd still have more chakra than Sasuke, even without Kurama. Uzumaki are renowned for large chakra supplies, and the only reason Sasuke held on for so long against Naruto in the final valley was because of him taking chakra from external sources. He took chakra from the 9 Beasts to amp his Susanoo and subsequent attacks. He used Kirin which takes 100% of chakra from the environment. He used Preta Path on Naruto to steal some of his chakra etc etc.

So Naruto would still be as strong, but he just wouldn't have access to the Kurama avatar and amping his attacks with tailed beast bombs.