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Thunder Racing TR220 cam: specs, price & owner results
| Spec | Value |
|---|---|
| Engine | Gen III/Gen IV LS |
| Style | HYDRAULIC ROLLER |
| Status | Discontinued |
Thunder Racing is no longer in business; its published specs for this cam survive only in forum reposts, so we don't list them. Owner-reported results below are from public forum threads.
Tuning checklist
- Tune: Aftermarket cams need idle, fuel, spark and torque-model changes.
What owners report with this cam
Owner-reported numbers from public forum threads — exploratory, not verified. Dynos, heads, supporting mods and tunes differ; use these as a rough range, not a promise.
6reports
327median rear-wheel hp, NA (n=4; low-confidence reports excluded)
271–343range, same basis
| Engine | Heads | HP | TQ | Measured at | Adder | Confidence | Thread |
|---|---|---|---|---|---|---|---|
| 5.3 | 667 | 654 | Wheel | turbo | High | performancetrucks.net | |
| 5.3 | 862 (milled .032) | 417 | 402 | Wheel | Magnuson MP122 supercharger | High | performancetrucks.net |
| LM7 5.3 (swapped) | 799 heads milled .030 | 343 | 329 | Wheel | NA | High | ls1truck.com |
| 330 | 326 | Wheel | NA | High | ls1tech.com | ||
| 5.3 | 324 | 290 | Wheel | NA | High | performancetrucks.net | |
| 5.3 | milled 706 (.025) | 271 | 274 | Wheel | NA | High | performancetrucks.net |
Sources
- DOD, AFM, And DFM Deletes: A Q&A With Michigan Motorsports — LSX Magazine