Can anybody tell me what the typical length of a short head bolt for a small block Chevy is? I did an aluminum head swap on a 350, using Edelbrock heads, some new bolts with washers, and ARP thread sealer. I normally use ARP bolts, but I thought I would try these from Jegs. Look the same and made in the USA. After getting everything back together, a few of the outer head bolts were seeping coolant. I've used their sealant before and never had this issue, but it was always cast iron heads. Anyway, I decided to pull out one bolt at a time and re-torque, using a different sealer. Got through one head without any problems. Went to the passenger side head and the third outer bolt from the back pulled the threads out of the block right before I hit 65 ft/lbs. These short bolts measure 1 3/4" without a washer. The stock short bolts I have average 1 3/4" too, with the exception of a couple which are slightly shorter. Add a washer and you're down to 1 5/8". I'm just concerned I'm not getting enough thread engagement in the hole.