1951 288 - Head and Manifolds - Nut and Washer Grades

Posted by kunzea On 2024/7/24 17:38:01

Bottom Line Up Front: Can I use grade 5 washers and grade 8 nuts for the head and manifolds?

I have removed the head and manifolds. They have been sandblasted and will be resurfaced, primed (2000 degree) and painted (1600 degree). Since the nuts and washers will not be painted I'm thinking of using black oxide (900 degree). In black oxide, I have found grade 8 nuts but only grade 5 washers.