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Thunder Racing T-ReX v.2 cam: specs, price & owner results
242/248 .608"/.612" 110 LSA
| Spec | Value |
|---|---|
| Part number | TR-TReX v.2 |
| Engine | Gen III/Gen IV LS |
| Style | HYDRAULIC ROLLER |
| Duration @ .050 (int/exh) | 242/248 |
| Lift (int/exh) | .608/.612 |
| LSA | 110.0 |
| RPM range | 3500-6700 |
| Price | $389.99 (Ws6Project, 2006-11-07) |
| Status | Discontinued |
Parts to install it: cam bolts to match your cam gear (1-bolt or 3-bolt); 7.400 in. pushrods (hardened; 7.400 in. is stock length, so measure first); timing cover gaskets (the front cover comes off to change the cam); timing chain (replace it on a high-mileage engine or with a big cam); valve springs (.660 in. lift) — stock springs aren't made for this cam. More: LS cam swap guide.
Check current price at Ws6Project.
- Tune: Aftermarket cams need idle, fuel, spark and torque-model changes.
What owners report with this cam
| Engine | Heads | HP | TQ | Measured at | Adder | Confidence |
|---|---|---|---|---|---|---|
| LS 408 stroker | AFR 225 out of box | 633 | 578 | Not stated | NA | High |
| 582 | 486 | Wheel | nitrous (TNT 150 shot) | Medium | ||
| LS1 stock bottom end | 560 | 500 | Wheel | Procharger D1SC | Medium | |
| LS1 | Stock 241 | 531 | 573 | Wheel | nitrous | Medium |
| 432 stroker | PP LS6 Stage III | 509 | Wheel | NA | High | |
| 346 LS1 | stock LS1 heads | 455 | 408 | Wheel | NA | Medium |
| LS1 | stock LS1 heads | 451 | 408 | Wheel | NA | High |
| LS6 | 451 | 396 | Wheel | NA | High | |
| LS1 | stock 243 | 444 | 406 | Wheel | NA | High |
| LS1 | Stock 241 | 441 | 395 | Wheel | NA | Medium |
| LS1 5.7 | 433 | 400 | Wheel | NA | Medium | |
| LS1 5.7 | 420 | 380 | Wheel | NA | High | |
| 403 | 374 | Wheel | NA | High | ||
| LS1 | 371 | 394 | Wheel | NA | High | |
| 5.7 (1998 Corvette block, stock bore/crank, aftermarket pistons/rods) | 243 | 345 | Not stated | nitrous (disconnected) | Medium |
From real tunes on similar cams
We don't have enough tunes on this exact cam yet, so this is what tunes on similar cams run at idle (within 6° intake duration at .050 and 2° LSA of this one; as of 2026-10-15). Idle settings follow the cam closely; WOT fuel and spark depend on the rest of the build, so they aren't shown here. Gen III and Gen IV computers use different idle tables, so they are listed separately.
15 naturally aspirated tunes on similar cams, Gen III computers (0411/P01, P59)
engines: 5.7 L, 6.6 L; computers: P01, PCM (1997-98).
| Setting | Range | Median | Tunes |
|---|---|---|---|
| Hot idle target | 800 rpm to 1,000 rpm | 950 rpm | 15 (middle 80%) |
| Warm idle airflow, in gear | 6.4 g/s to 14.7 g/s | 9.0 g/s | 15 (middle 80%) |
| Idle spark (around 800 rpm) | 18° to 23° | 22° | 15 (middle 80%) |
What these tunes run, not your numbers: heads, injectors, converter, fuel and altitude all change what your engine wants. For starting values built for your engine, injectors and fuel, use the turn-on tune builder. A turn-on tune only gets it running: always finish on a dyno, and read our safe tuning limits before any wide-open pass.
Installing it? Follow our LS cam swap guide (Gen III and Gen IV, any chassis), with every torque spec you need. In a 1998–2002 Camaro or Firebird, the F-body cam and valve spring swap goes bolt by bolt.
Build a turn-on tune sheet for this cam → Idle and spark starting values, from real tunes. Always finish on a dyno.
New Already running this cam? Send us your tune and we'll compare it with similar builds and tunes we've reviewed. Get a Tune Report → $19, free while we launch.