Regrinding a Camshaft?????

[Clem Z.]

not all chevy cam bearing both BBC and SBC

have the same outside diameter. #2 and #5 both have the same outside diameter and can be interchanged EXCEPT in 65/66 BBC. some also have different oiling holes for the front bearing to get more oil to the thrust surface of the cam gear.

[Clem Z.]

you MUST used a grooved cam in any 65/66

block along with the rear cam bearing with 3 holes to get oil to the lifters

[Eugene B.]

Re: you MUST used a grooved cam in any 65/66

Clem,
I read the original posts on this subject and they got me to thinking about my replacement camshaft. After reading your post this morning, I went to the garage to look at my parts archive.

My original '65, 250HP camshaft does not have a groove around the back cam bearing surface. What am I missing or not understanding about this post.

Best regards,
Gene

[Clem Z.]

the grooved cam only applies to big blocks *NM*