What is a crank pin and why is it needed?

A crank pin is a small bolt or pin that is installed into the crankshaft snout. It works with a corresponding hole in the harmonic balancer to positively lock the balancer to the crankshaft, preventing it from slipping or spinning independently.

What engines does this ATI drill kit fit?

This kit is specifically for Hemi engines, including the 5.7L, 6.1L, and 392 cubic inch variants. It is designed for non-VVT models produced before the 2009 model year.

Do I need any special tools besides what's in this kit?

While this kit provides the drill bit and tap, you will need a drill motor, a tap handle, and potentially a way to accurately measure and mark the crankshaft snout. Always refer to the manufacturer's installation instructions for a complete tool list and procedure.

Specifications

Brand: ATI
Part #: ATI918008
UPC: 800157024085

ATI Crank Pin Drill Kit - Hemi 5.7 6.1 392 - Non-Vvt Before 2009

Name: ATI Crank Pin Drill Kit - Hemi 5.7 6.1 392 - Non-Vvt Before 2009
Brand: ATI
SKU: ati-ati-crank-pin-drill-kit-hemi-5-7-6-1-392-non-vvt-before-2009-t14-361415
Price: 159.72 USD
Availability: BackOrder

$159.72

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

ATI Crank Pin Drill Kit for Hemi 5.7, 6.1, and 392 non-VVT engines before 2009.

Key Features

This kit includes the drill bit and tap needed to install a crank pin.
Designed for Hemi 5.7L, 6.1L, and 392 non-VVT engines.
Intended for use on engines manufactured before the 2009 model year.
Helps prevent aftermarket harmonic balancers from spinning on the crankshaft.
Ensures the harmonic balancer stays locked in place under load.

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About this part

Product Details

This ATI Crank Pin Drill Kit gives you the tools to properly drill and tap your Hemi crankshaft for a crank pin. This is a crucial step when installing certain aftermarket harmonic balancers, especially those designed for racing or high-performance applications, to prevent the balancer from spinning on the crank snout. This kit is specifically designed for Hemi engines, including the 5.7L, 6.1L, and 392 cubic inch variants, that are non-VVT and were manufactured before the 2009 model year.

Inside this kit, you'll find the necessary drill bit and tap to create a precise hole in your crankshaft. Following the manufacturer's instructions for drilling and tapping is essential for a secure installation. This process ensures that the harmonic balancer remains locked in place, even under extreme engine loads, preventing potential damage and maintaining consistent engine timing. ATI is known for making well-built components for performance applications, and this kit is no exception, providing the specific tools needed for this important modification.