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LS Truck Block - Drill Template

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Drill Template for LS Truck/SUV Iron Blocks

Do you have an LS Truck block and need the second mounting hole for low mount alternators or other accessories? We've made it simple with this easy to use template. Just attach the template with your factory hardware, mark the hole, then drill the hole with an "R" drill bit (.339", or 11/32"), then use an M10-1.5 Tap. (This is in a non critical part of the engine block.)

  • Perfectly align and drill the second mounting hole for low mount alternators in LS Truck/SUV iron blocks.
  • Mark the center point for precise drilling & tapping.
  • Made in Wichita, Kansas from aerospace grade, USA produced billet aluminum
  • Includes: 1 drill template only

More Information

Bullet Point 1 This drill template allows you to mark the center point for drilling and tapping the second mounting hole for, low mount alternators or other accessories, in LS truck/SUV iron blocks.
Manufacturer Part Number 551445
UPC 656729844458
Weight 0.250000
ICT Manufacturer ICT Billet
United States United States
Length Inches 9
Width Inches 2
Height Inches 1

WARNING - This product can expose you to chemicals including lead, which is known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information go to


ALUMINUM: Most of the aluminum alloys used today contain some level of lead, usually less than .1%. Lead is known to the state of California to cause cancer and reproductive harm. Most aluminum alloys are physiologically inert in their solid form, and the lead is contained within, however user-generated dust and/or fumes may pose a hazard if inhaled or ingested. Heating beyond a certain temperature may also provide avenues for exposure.


STEEL (steel bolts):  Steel is an iron alloy with several metals including Nickel and Chromium. Both Nickel and Chromium are known to the State of California to cause cancer and reproductive harm, respectfully. This warning applies to stainless steels as well.