LS Alternator Only Bracket  Type 1   Billet Speed
LS Alternator Only Bracket  Type 1   Billet Speed
GM LS Alternator Only Bracket and Adjustable Idler System *Type 1*  - Standard & Electric Water Pump
GM LS Alternator Only Bracket and Adjustable Idler System *Type 1*  - Standard & Electric Water Pump
LS Alternator Bracket Billet Speed
LS Alternator Only Bracket  Type 1   Billet Speed
LS Alternator Only Bracket  Type 1   Billet Speed
LS Alternator Only Bracket  Type 1   Billet Speed
LS Alternator Only Bracket  Type 1   Billet Speed
LS Alternator Bracket Billet Speed
LS Alternator Bracket Billet Speed

GM LS Alternator Only Bracket and Adjustable Idler System *Type 1* - Standard & Electric Water Pump

Regular price $104.99 Sale

Select which harmonic balancer you are using from the drop down menu.

In Stock.  Ships within 1 business day.

GM LSx LQ series "Alternator Only” Bracket and Adjustable Idler system, CNC Machined in the USA from 6061 aircraft grade billet aluminum.

  • Designed to work with all three LS balancers without spacing the water pump.   We provide different length spacers / bolts depending on which LS harmonic balancer you are using.   Choose from the drop down menu when ordering.
  • Mounts the alternator on the top of driver’s side of the motor 
  • Works with the 145 or 160 amp truck alternator, or the 105 amp LS1 F-Body alternator
  • Compatible with any LS series engine, because everything bolts to the cylinder head.  This includes LQ4, LQ9, LS1, LS2, LS3, LSX, and more.
  • It can also be used to drive the alternator directly off the crank if using an electric water pump. Flip the slotted idler block over (slot on the bottom) and it can be used as a tensioner on the top of the belt (see photos). Will work with the Meziere electric pump.
  • Places the alternator below an LS1 style intake — lower than any other bracket available! The included idler pulley increases belt wrap on both the crank pulley and alternator pulley, and guarantees you won’t sling a belt off.
  • The distance from the engine center-line to the outside of the alternator is only 16”.   If you need narrower, see the Type 2 bracket which is 1.5" shorter.
  • This setup retains the factory active tensioner. Make sure you have the same tensioner as the balancer you are using (Truck, LS1 or Corvette).  It is compatible with the aftermarket tensioners also.
  • Important Note: this bracket will not work in a 4th Gen. F-Body Camaro with F-Body/LS-1 Balancer.  See our fixed idler version for this vehicle. 
  • WILL NOT WORK in a 3rd Gen. Cadillac CTS-V

Important notes about Corvette accessory drive :

  • The coolant temperature sensor needs to be relocated to the passenger side head when using the Corvette balancer / accessory drive.
  • Corvette spacing will not work with tall aftermarket valve covers.

You only need to supply the 68.5" 6-rib drive belt (1740mm, Advance Auto part number 685K6 or 6PK1740).

If you are using an electric water pump, the belt length is 50" for stock diameter balancer.

If you are running an undersized balancer, you will need a shorter belt than listed.

Installation Instructions

Customer Reviews
4.9 Based on 28 Reviews
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A
07/24/2020
Anonymous
United States United States
Alternator bracket for f-body

Fit perfect and an easy install.

Billet Speed GM LS Alternator Only Bracket and Adjustable Idler System *Type 1*  - Standard & Electric Water Pump Review
MN
07/06/2020
MATT N.
United States United States
Great product

Took me a while to find an alternator bracket that worked on my 1977 Monza. Looks good.

BS
06/28/2020
Brent S.
United States United States
Absolutely perfect.

Belt stays on at 7,500 and looks very good doing so.

TP
06/20/2020
Taylor P.
United States United States
Great quality

Best alternator bracket out there. Very strong and simple to install.

AH
06/20/2020
Allen H.
United States United States
Alt Bracket

Installing this was a easy and it does exactly what it is advertised to do.Looks great. Very clean machine processing.