Once you’ve installed the main caps and tightened the ARP main stud bolts to a nice snug fit you’ll need to properly torque them to the required specifications.
Once the crank is secured and tightened you’ll need to assemble your rod and piston combo. Here you can see the bore size on the piston used to bore out the block. We highly recommend you send a piston out with your block to make sure the measurements are done correctly. Don’t just take the printed size as is, millimeters can make or break your build.
With your rods and pistons assembled it’s time to install the belly of the beast. First thing you will want to do is check your ring clearance. You’ll want to install and square up all the top rings and check the gap to make sure everything is within tolerance.
Once tolerances are checked and you are positive the ring gap is good install the rings onto the piston.
Rods assembled to piston, check. Rings on piston, check. ARP ring compressor, check.
When installing pistons into the block you might want to look away. Yes we’re dealing with metal that isn’t going to get hurt by the rubber end of a mallet but watching (or doing it yourself) the top of your brand-new pistons getting vigorously pounded on will always makes you cringe. Also, make sure the crank journal is at the bottom of the stroke – you don’t want the connecting rod to come down and score the journal.