Home › Cams › Elgin (Sloppy Mechanics) Sloppy Stage 2 (Sloppy Mechanics Stage 2, SS2) — Current (E-1840-P)
Elgin (Sloppy Mechanics) Sloppy Stage 2 (Sloppy Mechanics Stage 2, SS2) — Current (E-1840-P) cam: specs, price & owner results
228/230 .585"/.585" 112 LSA (283/286 advertised)
| Spec | Value |
|---|---|
| Part number | E-1840-P |
| Engine | Gen III/Gen IV LS |
| Style | HYDRAULIC ROLLER |
| Duration @ .050 (int/exh) | 228/230 |
| Lift (int/exh) | .585/.585 |
| LSA | 112.0 |
| RPM range | 2200-7000 |
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Buy it: Elgin (Sloppy Mechanics) Sloppy Stage 2 (Sloppy Mechanics Stage 2, SS2) — Current (E-1840-P) cam · maker's page
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 (.600 in. lift) — stock springs aren't made for this cam. More: LS cam swap guide.
- 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 |
|---|---|---|---|---|---|---|
| Gen 4 6.0 stock bottom end | 1076 | Wheel | turbo (VS Racing Billet 80mm) + NO2 dry shot | Medium | ||
| 5.3L | 650 | 600 | Wheel | On3 76mm turbo | High | |
| L33 5.3 stroked to 363ci | 650 | Wheel | NA | Low | ||
| 2002 4.8L stock | 650 | Wheel | turbo | High | ||
| 5.3 | 650 | 600 | Wheel | On3 76mm turbo | High | |
| LM7 5.3 | stock | 650 | 600 | Wheel | turbo | High |
| 650 | 600 | Wheel | turbo (On3 76mm) | Low | ||
| LQ4 6.0 | 799 | 649 | Wheel | twin GT3582R turbos | High | |
| LQ4 | 644 | 623 | Wheel | turbo | High | |
| LQ4 6.0 | Stock (untouched) | 644 | 623 | Wheel | turbo | Medium |
| LQ4 | stock | 644 | 623 | Wheel | turbo | Medium |
| LQ4 | stock | 644 | 623 | Wheel | turbo | Medium |
| LM7 (5.3L) | 862 | 620 | 572 | Wheel | turbo | Medium |
| truck 5.3 (stock bottom end, ARP head studs) | 613 | Wheel | twin turbos (On 3 Performance 70mm journal bearing) | High | ||
| 5.3L Gen 3 | rebuilt 862 (PAC 1218 springs) | 610 | 539 | Wheel | turbo | High |
| 2002 4.8L (LR4) | stock | 521 | Wheel | turbo | High | |
| 5.3L Gen 3 | rebuilt 862 (PAC 1218 springs) | 521 | 486 | Wheel | turbo | High |
| 5.3 | 862 | 500 | Wheel | turbo | Medium | |
| PRC 227 (57cc) | 451 | 441 | Wheel | NA | High | |
| L33 5.3 | 450 | 475 | Wheel | supercharger (LSA blower) | Medium | |
| L33 5.3L | 450 | 475 | Wheel | supercharger | High | |
| L33 5.3 | stock | 450 | 475 | Not stated | supercharger | Medium |
| L33 5.3 | Stock | 450 | 475 | Wheel | supercharger | High |
| 4.8 | stock | 440 | 430 | Wheel | turbo | High |
| 4.8 LR4 | 440 | 430 | Not stated | turbo | High |
From real tunes on this cam
Real HP Tuners tunes in our library that run this exact cam (as of 2026-10-15), read straight out of the files. Boosted builds show idle settings only: their fuel and spark depend on boost.
15 naturally aspirated tunes with this cam on Gen III computers (0411/P01, P59)
engines: 4.8 L, 5.3 L, 5.7 L; computers: P01, P59, PCM (1997-98).
| Setting | Range | Median | Tunes |
|---|---|---|---|
| Hot idle target | 775 rpm to 900 rpm | 800 rpm | 15 (middle 80%) |
| Warm idle airflow, in gear | 7.8 g/s to 16.1 g/s | 12.6 g/s | 15 (middle 80%) |
| Idle spark (around 800 rpm) | 18° to 24° | 22° | 15 (middle 80%) |
Power enrichment and WOT spark: the 15 pump-gas tunes only.
| Setting | Range | Median | Tunes |
|---|---|---|---|
| Power enrichment (PE) lambda | 0.78 to 0.85 | 0.85 | 15 (middle 80%) |
| WOT spark at 5,000 rpm, about 0.9 g/cyl | 13.0° to 28.0° | 18.0° | 15 (middle 80%) |
4 boosted tunes with this cam on Gen III computers (0411/P01, P59)
engines: 4.8 L, 5.3 L; computers: P01.
| Setting | Range | Median | Tunes |
|---|---|---|---|
| Hot idle target | 775 rpm to 850 rpm | 812 rpm | 4 |
| Warm idle airflow, in gear | 8.3 g/s to 12.6 g/s | 11.9 g/s | 4 |
| Idle spark (around 800 rpm) | 16° to 24° | 22° | 4 |
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.