WEAPON-X: 370cfm LT1 4.065" Ported Cylinder Heads [Camaro Corvette, LT1]
Vendor: WEAPON-X Motorsports
The 2014+ C7 Corvette Stingray, 2017+ C7 Corvette Grand Sport, and 2016+ 6th gen Camaro SS out of the box has some very high flowing heads with approximately 295 cfm. For some of us, this is just isn't enough. We need more flow, a more aggressive cam, and want to see nearly 600 naturally aspirated rear wheel HP! Want to go boosted? Our hybrid head port drops the compression ratio for boost now, or later and we've made nearly 600whp with these and our cam kit on an E85 LT1 car!
Here's what we do! Fully CNC ported intake and exhaust ports, custom intake valve job, custom full radius exhaust valve job, intake and exhaust bowl blending, optional milling for increased compression ratio.
Stage 1 is CNC only
Stage 2 is the trend for boosted engines with smaller ports for higher airflow velocity
Stage 3 is the fully ported windows and all
Intake port volume: 295 cc (peak stock flow 309 cfm)
Exhaust port volume: 106 cc (peak stock flow 194 cfm)
Stock Combustion Chamber Size: 60 cc
Stock intake valve size: 2.125" 96.2 grams (hollow stem)
Stock exhaust valve size: 1.590" 73.5 grams
Hybrid lower 10.7:1 Compression
Here are some specs of the porting option:
Intake port volume: 310+cc
Exhaust port volume: 105+cc
CNC flow rate of intake port is 55+cfm over stock flow with very strong mid-lift improvements using stock 2.125" valve.
CNC flow rate of exhaust port is 240+cfm! with stock 1.590" valve!
Core charge is 100% refundable within 15 business days if you choose to return your LT1 heads.