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Tru-Gear Small Block Chevy Noisy Gear Drive

Tru-Gear Small Block Chevy Noisy Gear Drive

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What's in the Box


Replace your timing chain with a Speedway Tru-Gear gear drive. Unlike timing chains, a gear drive doesn't stretch, so your cam timing stays more accurate. We builds these drives with dual idler gears, making them more stable than single idler gear drives. A Tru Gear gear drive is as easy to install as a timing chain and will fit under your stock timing chain cover. Noisy gears give your engine a "supercharged" sound. 

For use on Chevrolet Small Block engines 1957–1995 262-400 c.i. all without “FACTORY” hydraulic roller camshaft.

453-3271N Instuctions (PDF)


  • Easy to install
  • Compatible with all standard camshafts
  • SAE 660 silicon bronze rear thrust ring included
  • Rugged Cr40 alloy steel gears assure prolonged trouble-free operation
  • Axial needle and cage forward thrust bearings reduce friction
  • Designed for precise multiple cam timing adjustments
  • Absolutely no adverse wear to camshaft or valvetrain components 
  • Dyno tests prove no horsepower loss compared to a chain
  • Parts Included:
    • Cam gear
    • Dual Idler assembly
    • Crankshaft gear
    • Back Thrust Ring
    • Thrust Button assembly
    • 3-bolt Lockplate
    • (3) Grade 8 cam bolts
    • (3) AN-washers
    • 0-2-4 degree offset bushings
    • Instruction sheet


  •  Back Thrust Ring  -  2.135 inside dia. X .062 thick
  • Thrust Button assembly  -  .75 diameter X .65 length
  • 3-bolt Lockplate  -  . 77 I.D. X 2.0 O.D. Stainless Steel
  • Cam bolts-grade 8 5/16-18 X 3/4 black oxide
  • Washers- 5/16 AN gold irridite coated
  • Offset bushings - .406 O.D. X .235 thick  0-2-4 degree

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