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MAST LS3 Small Bore Cylinder Heads

  • MAST LS3 240 Bare Heads
  • MAST LS3 240 Deck View
  • MAST LS3 240 Combustion Chamber
  • MAST LS3 240 Combustion Chamber
  • OPTIONAL PAC SPRING KIT
  • OPTIONAL PAC SPRING KIT
RRP:
$1,399.99
Your Price:
$1,349.99 (You save $50.00)
SKU:
MAST-510-301
Weight:
50.00 LBS
Shipping:
Calculated at checkout
Quantity:


Product Description

MAST Motorsports - LS3 SB Cylinder Heads
 
The most powerful small bore LS3 cylinder head, available on the planet! These small bore LS3 rectangular port cylinder heads are built from scratch using the proven CNC port configurations from MAST with our PAC Racing/FTI valvetrain components. Because of their custom built configuration, these heads are a non-stocking item and have a longer lead time than stocking items. Plan accordingly.

•  Designed for any new Gen III short-block with 3.900" bore
•  Perfect for high RPM LS1-LS6 based engine combinations
•  Accepts Gen IV LS3 valvetrain and intake manifolds.
•  2.080" x 5/16" stem intake valve
•  1.570" x 5/16" stem exhaust valve
•  Fully CNC ported combustion chamber
•  Deck thickness of .75"

Each FTI built Mast Black Label cylinder head assembly includes:

• A fully CNC machined Mast Black Label aluminum cylinder head
• PAC Racing .650 lift dual valve springs
• Mast lightweight stainless steel intake & exhaust valves
• FTI lightweight chromemoly steel retainers
• FTI hardened and machined valve locks

NOTE:  Gaskets, valve covers, rocker arms and push rods not included -
Rocker stands available for stock rocker arm usage -
 
These heads can be customized with any valvetrain components you want. Titanium intake valves, PAC Racing valve springs, super alloy exhaust valves. You are only limited by your imagination. Contact us directly for more options and information.
 
PART NUMBER: MAST-510-301 (SOLD EACH)
mast-logo.jpg
 
MAST M/S Flow Data w/3.9" Bore
Lift Intake Exhaust
0.100 72 55
0.200 148 107
0.300 224 155
0.400 282 203
0.500 322 214
0.600 342 227
0.700 346 241

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