What grade was the original rocker shaft capscrew??

[87LtdT]

If anybody has their engine open I'd appreciate taking a look.

Grade 8 capscrews came with my HS roller rockers....but they are either fake or missed their heat treatment because 3 of 6 of them stretched before reaching 25 ftlbs of torque.

I have Grade 5's...wondering if they are good enough. Would seem to be.

Thanks, Bob

 

[Just a Six??]

I seem to remember Grade 8 in all mine. Grade 5 should take 25 lbs but I'm not pro on bolt stretch.