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Tennessee Thunderstix TTS-904 Camshaft for Honda/Clone/Hemi Predator
TTS-800 Tennessee Thunderstix with 3 degree retard
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Tennessee Thunderstix TTS-904 Camshaft for Honda/Clone/Hemi Predator

Part Number: TTS-904
Online Price: $113.99
TTS-904 Tennessee Thunderstix Camshaft – Big Lift Cam for GX200, 212, Clone Engines
Availability: Out of Stock.

Description

TTS-904 Tennessee Thunderstix Big Lift Camshaft – For GX200, 196cc, 212cc, and Clone Engines


The TTS-904 Tennessee Thunderstix is a high-lift performance camshaft engineered for high-RPM drag and open-class racing engines based on the Honda GX200, Predator 212, Tillotson 196/212/225, and similar small-block platforms.


This aggressive cam is designed specifically to complement high-flowing cylinder heads and race-grade valvetrain components. Whether you're running 1.1 to 1.3 ratio rockers, billet heads, or custom ported castings, the TTS-904 is built to maximize power output at 9200+ RPM.


Key Features & Benefits

  • Big Lift for High-Flow Heads – Designed to fully utilize billet or ported cylinder heads that flow strong above .350” lift. Ideal for high-performance builds.
  • High-RPM Powerband – With 252° duration and 108° centerlines, the TTS-904 delivers strong scavenging and power at higher RPMs, making it ideal for open-class racing engines.
  • Optimized for Modified Builds – Often used in builds that don't use ratio rockers, but still need significant valve lift. Works well with 1.1 to 1.3 rockers and custom head setups.
  • Built for Competition – Designed for RWYB and Open Modified classes, this is not a beginner-friendly or street cam. It requires a fully reinforced engine setup and internal block clearance.
  • Supports 9200+ RPM – Paired with a suitable spring package and billet internals, this cam delivers extreme performance in high-revving engines.


Camshaft Specs (TTS-904)

Specification

Intake

Exhaust

Lift

.352

.353

Duration @ .050”

252°

252°

Centerline

108° ATDC

108° BTDC

Target RPM Range

9200+


Spring Pressure

32 lbs (In/Ex)


Valve Lash

.003" (Intake & Exhaust)


Ignition Timing

34° BTDC



Installation Requirements

  • Upgraded Valve Springs – 32 lbs or higher recommended
  • Billet Connecting Rod
  • Billet Flywheel
  • Block Clearance – Required for cam lobes and/or compression release
  • Proper Rocker Arm Setup – 1.1, 1.2, or 1.3 ratio rockers recommended


Engine Compatibility

  • Honda GX200 (OHV)
  • Clone 196cc
  • Predator 212 (Hemi)
  • Tillotson 196R, 212, 225
  • EC Wildcat 223cc
  • Predator 224 Non-Hemi (Clearance required for compression release with 58mm–59mm crankshafts)
  • EC Stroker Kits (may require additional clearance)
  • Does not fit Predator 212 Non-Hemi or Predator 224 Hemi


Who Should Use the TTS-904?

This cam is for serious racers competing in open class, high-RPM racing environments, such as:

  • RWYB (Run What Ya Brung)
  • Open Modified Mini Bikes
  • Kart Racing with unrestricted engine rules

This cam is not designed for street use or casual trail riding. It requires a precise build and race-ready components.

FAQ

Q1: Will the TTS-904 camshaft fit my Predator 212 engine?
A1: Yes, the TTS-904 is compatible with Predator 212 Hemi but not the Non-Hemi engines


Q2: Can I use this cam with stock valve springs?
A2: No. This cam requires upgraded valve springs rated at 32 lbs or higher due to the aggressive lift and duration.


Q3: Is the TTS-904 suitable for trail or street engines?
A3: No, this cam is designed for racing only. It does not provide good idle or low-end characteristics for casual use.


Q4: Do I need ratio rockers to run this cam?
A4: Ratio rockers are not required but can enhance performance. Many builders use 1.1 to 1.3 ratio rockers to fully take advantage of high-flow cylinder heads.


Q5: Will this camshaft work in my 224cc or 223cc engine?
A5: Yes, but engines with 58mm+ crankshafts may need additional clearance around the compression release area. Always check clearance before final assembly.

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