On any bolt with washer, or stud with washer, the chamfer goes to the head or nut side, and the flat goes against the part being clamped.  If two washers are needed in a high torque situation such as head bolts, they should be grade 8 and the flats go to the part being clamped.  The rounded side goes to the bolt head or nut side.  All washers, unless cam ground, have a flat side and a rounded side because they were stamped out before being hardened.  Joe-JDC

JDC

Thanks for all the advice.

So I decided to do a trial fit of the ARP bolts without nuts. I put some oil on the threads and the longer end bolts went in fine with no space sticking up so I can use them. I am changing head gaskets and the previous engine builder put some thread dressing on the bolts which gave me a false depth reading on the end bolts.

Get a thread restoring tap and die set for cleaning out existing threads.

1 example of many:
https://www.amazon.com/Lang-Tools-2581-26-Piece-Restorer/dp/B00DTEFSWY/ref=asc_df_B00DTEFSWY/?tag=hyprod-20&linkCode=df0&hvadid=309807921328&hvpos=&hvnetw=g&hvrand=16359464428981792935&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9010796&hvtargid=pla-492697560931&psc=1

You can make them by cutting 3 or four grooves along the length of a grade 8 bolt.


Lawrenceville, GA

Good idea thanks