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Mast: LS7 265cc 4.000" Cylinder Heads [Camaro Corvette CTS V, LS7]

Mast: LS7 265cc 4.000" Cylinder Heads [Camaro Corvette CTS V, LS7]

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Vendor: Mast Motorsports

SKU:

$3,591.00 $3,780.00

Trying to improve on the best factory small-block cylinder heads ever built is no small endeavor. And yes, GM's 12-degree LS7 castings are the best small-block heads of all time-regardless...

Intake Valves

2.165" Solid SS - Hyd Roller

2.165" Hollow SS - Hyd Roller

2.165" Solid Ti - Hyd Roller

2.165" Solid Ti - Solid Roller

Exhaust Valves

1.600" Solid SS - Hyd Roller

1.600" Solid Inconel - Hyd Roller

1.600" Solid Ti - Hyd Roller

1.600" Solid Inconel - Solid Roller

1.600" Solid Ti - Solid Roller

WEAPON-X +10% Port

Yes

Quantity

Subtotal:

Trying to improve on the best factory small-block cylinder heads ever built is no small endeavor. And yes, GM's 12-degree LS7 castings are the best small-block heads of all time-regardless of engine make-trumping even the legendary Ford Cleveland heads. With a full CNC rubdown, monster 2.20/1.61-inch valves, and raised 270cc intake ports to go along with a flat 12-degree valve angle, factory LS7 heads flow 360 cfm out of the box. That's big-block territory, and at a hair less than $3,000 for a set of fully assembled LS7 heads from your friendly GMPP distributor, they're an exceptional value as well. So naturally, we were quite intrigued when Mast Motorsports announced it had just developed its own 265cc LS7 castings that outflows the factory design in a smaller bore.

LS7 performance for your LS3 LS2 or other 4.000" or larger bore LS engine! Ideal on stroked engines, this LS7 265 head was designed from the ground up.

Utilizes the Gen IV LS valve-train and intake manifold
Designed for any new Gen IV short-block with 4.000" bore or larger
Uses a 2.165" intake valve and 1.600" exhaust valve
11 Degree Valve angle
Has a 265cc intake port
Has a deck thickness of .750"

Flow Data w/4.065" Bore Plate
Lift	Intake	Exhaust
0.100	82	61
0.200	151	119
0.300	230	188
0.400	292	219
0.500	332	236
0.600	352	251
0.650	360	254
0.700	365	260
0.800	369	263
0.850	370
0.900	371

VEHICLE MANUFACTURE

Mast: LS7 265cc 4.000" Cylinder Heads [Camaro Corvette CTS V, LS7]

Vendor: Mast Motorsports

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