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MTM510-304 - Mast Motorsports Rectangular Port LS3 12 Degree 6-Bolt Large Bore CNC Assembled (4.125"+ Bore), Single

This product may require vehicle validation(s) for proper fitment. Please contact us to confirm correct vehicle fitment and usage.

510-304
Pricing: $1,852.41
Qty:

Description

• Utilizes the Gen IV LS7 OEM rockers, but accepts the LS3/L76 intake manifold
• Designed for any new Gen IV short-block with 4.125" bore or larger
• The 6-bolt design is compatible with GM LSX and World LSX blocks
• Uses a 2.200" intake valve and 1.600" exhaust valve
• Has a 270cc intake port
• Has a deck thickness of .750"
• Has a 70cc Combustion Chamber Standard

Each Mast Black Label cylinder head assembly includes:

• A fully CNC machined Mast Black Label aluminum cylinder head
• Mast nitrided & micro finished .700" Lift Dual Springs
• Mast lightweight stainless steel intake & exhaust valves
• Mast lightweight steel retainers
• Mast machined locks
• • NOTE: Gaskets, valve covers, rocker arms and pushrods not included

Price is each

Flow Data w/4.125" Bore Plate
Lift Intake Exhaust
0.100 78 65
0.200 162 118
0.300 243 171
0.400 304 212
0.500 347 229
0.550 362
0.600 376 245
0.650 384 247
0.700 390 249

Application List

Universal

Shipping Information

  • Item Requires Shipping
  • 25.0 lbs.

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