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Drivetrain› Clutches and Components

Holley

7090 454 BBC GM TKO/TKX COMPLETE TRANSMISSION INSTALLATION KIT

$2,478.95 $2,343.02 Save $135.93

SKU: H00E 319-502

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INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

Part #: 319-502

These Holley Transmission Installation Kits come complete with everything you need to bolt a TKX or TKO transmission to a 1970-1990 454 big-block Chevrolet engine. Built with a mixture of our best brands including Lakewood, Hays and Mr. Gasket. Kit includes: A roller pilot bearing, bellhousing with dust shield, billet steel flywheel, clutch and pressure plate, hydraulic release bearing, and all hardware needed to install these components.

Features:

  • Designed for 1970-1990 454 Big Block Chevrolet Engines using a TKX or TKO transmission
  • Light weight cast aluminum bellhousing and stamped steel dust cover provides factory-like installation and appearance
  • Billet steel 36 lb, 168 tooth externally balanced flywheel for light weight and strength
  • Roller style pilot bearing offers improved shifting by reducing parasitic drag and transmission wear
  • 26 spline, 11-inch clutch disk offers superior clamping force for engines up to 500 hp
  • Adjustable Hydraulic Release Bearing offers reduced pedal effort and easy installation
  • Organic clutch disc features heavy-duty hub spring assembly for increased load capacity
  • Works with OE (original equipment) or MSD High Torque starters
  • All hardware included

GM TKO/TKX Installation kit for 1970-1990 externally balanced 454 Big Block Chevrolet Engines

MIA's Description

This Holley Complete Transmission Installation Kit, MPN 319-502, provides all necessary components to install a TKX or TKO manual transmission onto a 1970-1990 Chevrolet vehicle equipped with a 454 big-block engine. The kit features a lightweight cast aluminum bellhousing with a stamped steel dust cover for a factory-like fit, a 36 lb, 168-tooth billet steel externally balanced flywheel for strength and reduced weight, and a roller-style pilot bearing to enhance shifting performance and reduce parasitic drag and transmission wear. It includes a 26-spline, 11-inch organic clutch disc with a heavy-duty hub spring assembly, capable of handling up to 500 horsepower, and an adjustable hydraulic release bearing for easier installation and reduced pedal effort. This comprehensive kit also provides all required hardware, making it a complete solution for driveline conversions. It is compatible with both OE (original equipment) and MSD High Torque starters.

Fitment

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Specifications

BrandHolley
Part NumberH00E 319-502
Weight72.55 lb

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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