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HOLLEY GM TKX/TKO Installation Kit BBC

HOLLEY GM TKX/TKO Installation Kit BBC

Original price was: £3,243.36.Current price is: £3,081.19. Inc. VAT

SKU: HOL319-502 Categories: , , Brand:

Description

Part Number: 319-502

Holley Complete Transmission Installation Kit for GM Big Block Chevy 454

Engineered to simplify mounting a Tremec TKX or TKO 5-speed manual transmission to 1970-1990 externally balanced 454 ci Big Block Chevrolet V8 engines.

Key Features

  • ☑ Complete all-in-one transmission installation package for Tremec TKX/TKO gearboxes
  • ☑ Lightweight cast aluminum bellhousing with stamped steel dust cover for clean factory-style installation
  • ☑ 36 lb billet steel 168-tooth flywheel designed for externally balanced 454 engines
  • ☑ Heavy-duty 11″ organic clutch disc with sprung hub rated for up to 500 horsepower
  • ☑ 26-spline input hub compatible with 1-1/8″ shaft diameter
  • ☑ Adjustable hydraulic release bearing reduces pedal effort and simplifies setup
  • ☑ Roller-style pilot bearing minimizes parasitic drag and transmission input shaft wear

Technical Specifications

Brand Holley
Manufacturer Part Number 319-502
Target Engine 1970-1990 GM Big Block Chevy 454 ci (2-Piece Rear Main Seal)
Transmission Compatibility Tremec TKX / TKO 5-Speed Manual (GM Fitment)
Flywheel Material & Tooth Count Billet Steel, 168-Tooth, 36 lb
Engine Balance External Balance
Clutch Friction Material & Diameter Organic, 11″ (279 mm)
Input Spline & Shaft Diameter 26-Spline, 1-1/8″ (1.125″)
Pressure Plate Style Diaphragm Style
Release Bearing Type Adjustable Hydraulic Release Bearing

What’s Included in the Box

  • Cast Aluminum Bellhousing with Stamped Steel Dust Shield
  • 36 lb Billet Steel 168-Tooth Externally Balanced Flywheel
  • 11″ Organic Sprung Hub Clutch Disc & Diaphragm Pressure Plate
  • Adjustable Hydraulic Release Bearing Assembly
  • Roller Pilot Bearing & Clutch Alignment Tool
  • Complete Mounting Hardware & Fasteners

Holley Performance Products combine high-performance engineering from trusted brands such as Lakewood, Hays, and Mr. Gasket into one comprehensive manual transmission conversion package. Backed by JP Racing’s dedicated technical sales team, we provide genuine Holley components with fast UK dispatch to keep your build moving forward.

Frequently Asked Questions

The Holley 319-502 kit is specifically designed for 1970–1990 GM 454 Big Block Chevrolet V8 engines featuring a 2-piece rear main seal and external engine balance, paired with a GM Tremec TKX or TKO 5-speed manual transmission.

This kit includes an 11" (279 mm) organic clutch disc with a heavy-duty sprung hub, designed for a 26-spline, 1-1/8" (1.125") transmission input shaft. It supports engine outputs up to 500 horsepower while offering smooth street drivability.

Yes, the kit includes an adjustable hydraulic throwout release bearing which reduces clutch pedal effort and eliminates mechanical clutch linkages, providing smoother engagement and simpler setup.

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