This Speed Engineering conversion bracket narrows the accessory drive on 4.8L, 5.3L, 6.0L and 6.2L GM truck engines for swaps into older cars and trucks with tight frames or engine bays. It rotates the alternator 180°, moves the power steering pump into a tighter position, and replaces the bulky factory aluminum bracket. The repositioned alternator allows several combinations of LS car and truck intake manifolds.
The kit reuses the factory truck alternator, power steering pump, and idler pulley, so no aftermarket alternator or pump is needed. All hardware is included.
⚠️ Important Notes:
- Uses NAPA/Gates belt part number 25 060775 (13/16" x 78" O.C.)
- For more clearance around the power steering pump, Dorman offers a smaller 5.18" pulley, part number 300-201
Features:
- 3/8" Billet Aluminum Construction
- Rotates the Alternator 180°
- Optional Large or Small Alternator
- Tighter Power Steering Pump Placement
- Organized Serpentine System
- Compatible with LS Intake Manifolds
- Reuses Factory Truck Accessories: Alternator, power steering pump and idler pulley
- Polished Aluminum Spacers
- All Hardware Included
- Engines: 4.8L, 5.3L, 6.0L and 6.2L GM truck and SUV engines
Swap Applications (as listed by Speed Engineering):
- 1950s, 1960s and 1970s GM cars and trucks
FAQ
Which engines does this bracket fit?
It fits 4.8L, 5.3L, 6.0L and 6.2L GM truck and SUV engines.
Do I need an aftermarket alternator or power steering pump?
No. The kit uses the factory truck alternator, power steering pump, and idler pulley.
What belt does this bracket use?
It uses NAPA/Gates belt part number 25 060775, which measures 13/16" x 78" O.C.
How can I get more clearance around the power steering pump?
Dorman offers a smaller 5.18" power steering pulley, part number 300-201, for additional clearance.
What vehicles is this bracket intended for?
Speed Engineering lists it for LS truck engine swaps into 1950s, 1960s and 1970s GM cars and trucks.
