Home › Cams › Brian Tooley Racing LS 400+ Medium Turbo Camshaft For 1.8 Rocker Ratio
Brian Tooley Racing LS 400+ Medium Turbo Camshaft For 1.8 Rocker Ratio cam: specs, price & owner results
234/25X .644"/.644" 119 LSA
An X in a spec is a digit the cam maker does not publish (22X means somewhere from 220 to 229). We show it as text and leave it out of number filters and sorting.
| Spec | Value |
|---|---|
| Part number | BTR-LSMT400+18 |
| Engine | Gen III/Gen IV LS |
| Application | TURBOCHARGED |
| Style | HYDRAULIC ROLLER |
| Cam bolt | THREE BOLT |
| Duration @ .050 (int/exh) | 234/25X (exhaust not published: the maker gives only the first digits, so exhaust 250–259°) |
| Lift (int/exh) | .644/.644 |
| LSA | 119.0 |
| Idle | moderate |
| Turbo/boost | S400 88MM-94MM single turbo in Gen III and G |
| Price | $409.99 (Brian Tooley Racing, 2026-09-29) |
Parts to install it: cam bolts (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 Brian Tooley Racing.
- Tune: Aftermarket cams need idle, fuel, spark and torque-model changes.
- Idle: Moderate
- Cam gear: Three bolt
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.