does it work with older small block chevy engines?

Not sure what you mean by "older"? If I understand your question, this tool is not designed to work on the engine in question. The 25090 Harmonic Balancer puller is designed to work on spoked balancers that do not have threaded holes. We would need specific year, make, model to better answer your question.

will it work on a 2004 chevy trailblazer?

I'm not certain about Chevy, but it worked great on my Ford Edge. It is a universal tool with different rods for different applications.

This was described as working well on an LS1. anyone know about an LSA, whether this will work?

I don't think so. Only works on specific ford and Chrysler and maybe some Chevrolet vehicles.

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OEMTOOLS25090 Harmonic Balancer Puller Kit, Adjustable 3-Jaw Puller Fits Most Late Model Vehicles, Forcing Screw Fits a 3/8” Square Drive, Includes 4 Forcing Rods

OEMTOOLS25090 Harmonic Balancer Puller Kit, Adjustable 3-Jaw Puller Fits Most Late Model Vehicles, Forcing Screw Fits a 3/8” Square Drive, Includes 4 Forcing Rods

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Product ID: 33589144

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📏Four forcing rods for multiple engine setups

🔧Adjustable 3-jaw puller for versatile fit

🛠️Spring-loaded jaws for secure, quick positioning

Description

🔩 Master engine repairs with precision & ease — don’t get left behind!

PRECISION GRIP - Spring-loaded jaws lock in place for fast, accurate harmonic balancer removal
DURABLE PORTABLE - Compact steel kit with sturdy case for organized, on-the-go repairs
LIFETIME RELIABILITY - OEMTOOLS limited lifetime warranty ensures long-term professional-grade performance
UNIVERSAL COMPATIBILITY - Fits GM, Ford, Chrysler & Mitsubishi late models without radiator removal
MULTI LENGTH FORCING RODS - Includes 4 rods (4" to 7-13/32") to tackle diverse engine configurations

The OEMTOOLS 25090 Harmonic Balancer Puller Kit is a professional-grade, adjustable 3-jaw puller designed for late model GM, Ford, Chrysler, and Mitsubishi vehicles. Featuring spring-loaded jaws for secure positioning and four forcing rods to fit various engine setups, it enables efficient harmonic balancer and crankshaft pulley removal without radiator removal. Packaged in a durable, portable case and backed by a limited lifetime warranty, this kit is essential for mechanics and DIYers seeking precision and reliability.

Specifications

Manufacturer	OEMTOOLS
Part Number	25090
Item Weight	9.8 ounces
Product Dimensions	9.3 x 7.2 x 2 inches
Item model number	25090
Is Discontinued By Manufacturer	No
Size	6 Piece
Color	Multi
Style	Adjustable 3-Jaw Puller
Material	Steel
Pattern	Balancer Puller Kit
Power Source	Hand Powered
Voltage	55.99 Volts
Item Package Quantity	1
Included Components	Harmonic Balancer Puller Kit
Batteries Included?	No
Batteries Required?	No
Warranty Description	OEMTOOLS Limited Lifetime

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OEMTOOLS25090 Harmonic Balancer Puller Kit, Adjustable 3-Jaw Puller Fits Most Late Model Vehicles, Forcing Screw Fits a 3/8” Square Drive, Includes 4 Forcing Rods

Description

Specifications

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