This 10-rib conversion allows the complete conversion to a 10-rib system on the C7 Corvette LT4 blower drive and includes everything needed except the upper pulley.
Please choose your rib offset, and note that some applications may interfere on the blower with +/-1 unless clearanced (like stock LT4) while extremely large lowers can interfere with the subframe on +2. Click here to order the correct Magnuson 2650 upper.
You will need to specify the size of the lower pulley you'd like with the system, and the max diameter to clear the lower idler is 9.84"/250mm. Also note larger +/- 1 lowers will require this clearanced serpentine pulley (unless you modify the stock one).
Included in this conversion:
- GM LT5 tensioner (~20% more tension than stock LT4)
- DSX tensioner bracket w/ smooth idler
- GM LT5 90mm smooth idlers
- DSX 89mm (OEM diameter) ribbed idler for tensioner bracket
- DSX 70mm (OEM diameter) ribbed idler for water pump
- DSX Anysize 10-rib lower for ATI 917315 damper