Looking to take your LS1, LS2 or LS6 engine to the next level? The Mast LS3 240 head is a great choice. This head was designed to allow owners of Gen III ls engines to benefit from the much-improved stock LS3 intakes. This head really thrives when paired with a stroker combination like a LS1 383!
- Easy bolt on to convert your GM Gen III to GM Gen IV head technology
- Perfect for LS1, LS2 and LS6 engines and short-blocks
- Accepts LS3/L92 valve springs, rocker arms, and intake manifolds
- Outflows any aftermarket cathedral cylinder head on the market
- Uses a 2.080" intake valve and 1.570" exhaust valve
- 11 Degree Valve angle
- Has a 61cc combustion chamber standard
- 6 Bolt Standard
- Has a deck thickness of .750"
- Cast & Machined in the USA!
**SOLD IN PAIRS WITH BILLET ROCKER STANDS INCLUDED**
| Flow Data w/3.900" Bore Plate | ||
| Lift | Intake | Exhaust |
| 0.100 | 76 | 57 |
| 0.200 | 147 | 110 |
| 0.300 | 218 | 172 |
| 0.400 | 274 | 214 |
| 0.500 | 318 | 234 |
| 0.550 | 333 | 242 |
| 0.600 | 342 | 248 |
| 0.650 | 349 | 252 |
| 0.700 | 353 | 257 |
