While I was working today, I thought of this thread.
Working on 2 7 bolt blocks, and an EVO block.
All are getting ARP main studs 207-5401 Torqued to 60 ft/lbs with ARP moly lube.
Main housing bore spec 2.4016-2.4024 .0008 is the target for a good bore.
DSM block #1 falls into spec when checked on 3 points, 6 and 12 point #1, 10 and 5 point #2, 2 and 7 point #3 Done in all 5 mains, #1, #2, #3, #4 checked on both sides of the oil groove.
No align hone needed, Cost to install main studs and check main bore $30
Evo block, Same method used.
#3 is tight by .005 under min spec, the other 4 mains are in spec.
Block will be align honed, Cost $175
DSM block #2 is up next, I will post what I fine.
DSM block #2, main bores are all in spec, also this was the later model block with the split thrust.
DSM Block #1 is a saddle bearing block, just in case any of you were wondering.
