LS7 heads minumum bore
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LS7 heads minumum bore Correct me if i'm wrong you have to have a minimum cylinder bore of 4.100 to run LS7 heads right??? a local told me he was running LS7 heads on his LS2 that wasn't bored or stroked???.. also are LS7 the pinnacle of LS heads or are their better heads for an LS
Last edited by GT06; Nov 2, 2008 at 08:43 PM.
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From: Perth, Australia
From 2008 GMPP Catalog:
12578449
LS7 Cylinder Head Assembly (not shown)
• 356-T6 aluminum head
• Fully CNC’d ports and chambers
• LS7 rectangle port design—requires rectangle port intake
manifold P/N 25534394, P/N 25534413 or P/N 12568976
• Assembled with 2.20" titanium intake and 1.61" sodium
filled exhaust valves
• 12° valve angle
• Designed for big bore LS7/C5R/LSX blocks
(min 4.100" bore)
• 270cc CNC’d intake ports
• 85cc CNC’d exhaust ports
• 70cc CNC’d combustion chambers
• All fasteners are metric
• Capable of over 600 horsepower
• Bare head P/N 12578450 available separately
LS7 Head Flow Data:
Lift 0.100" 0.200" 0.300" 0.400" 0.500" 0.550" 0.600" 0.700"
Intake 71.0 145.0 222.0 271.0 315.0 332.0 348.0 352.0
Exhaust 60.0 120.0 159.0 192.0 207.0 214.0 219.0 221.0
12578449
LS7 Cylinder Head Assembly (not shown)
• 356-T6 aluminum head
• Fully CNC’d ports and chambers
• LS7 rectangle port design—requires rectangle port intake
manifold P/N 25534394, P/N 25534413 or P/N 12568976
• Assembled with 2.20" titanium intake and 1.61" sodium
filled exhaust valves
• 12° valve angle
• Designed for big bore LS7/C5R/LSX blocks
(min 4.100" bore)
• 270cc CNC’d intake ports
• 85cc CNC’d exhaust ports
• 70cc CNC’d combustion chambers
• All fasteners are metric
• Capable of over 600 horsepower
• Bare head P/N 12578450 available separately
LS7 Head Flow Data:
Lift 0.100" 0.200" 0.300" 0.400" 0.500" 0.550" 0.600" 0.700"
Intake 71.0 145.0 222.0 271.0 315.0 332.0 348.0 352.0
Exhaust 60.0 120.0 159.0 192.0 207.0 214.0 219.0 221.0
