For a performance or heavy-duty application, the use of studs is preferred whenever possible instead of main cap bolts. These ARP studs provide the ability to obtain much more accurate torque values because the studs don’t twist during tightening unlike bolts. Because the studs remain stationary during nut tightening, the studs stretch in one axis alone, providing much more even and accurate clamping forces. Also, because the use of studs results in less wear applied to the block’s threads, this extends the life of the threaded holes in the block over periods of servicing/rebuilding. This is especially important when dealing with alloy blocks. The use of studs also eases main cap installation, and contributes to main cap alignment. There is less chance of main cap walking because the studs remain stationary during cap clamping.