GMMP LS3 6 bolt heads
10-09-2010, 07:40 AM
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10-09-2010, 02:35 PM
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LSX-LS3 Cylinder Head Assembly
$939.95Part Number: 19201805
Brand: GM Performance Parts
SKU: 19201805
Price: $939.95
LSX-LS3 Cylinder Head
L92 style rectangle port design
Assembled with 2.165" hollow stem intake and 1.590" solid stem exhaust valves
15° valve angle
260cc “as-cast” intake ports, 80cc “as-cast” exhaust ports
70cc “as-cast” combustion chambers
Minimum 4.000" bore
Uses LS3 rocker arms/LS7 bolts
Extending the performance range of the LSX platform are GM Performance Parts’ new, 6-bolt LSX cylinder heads. Many are capable of flowing more than 400 cfm and their 6-bolts-per-cylinder clamping design gives them bombproof strength. Your horsepower-building potential is nearly unlimited with LSX heads.These aluminum masterpieces of performance feature port and chamber designs based on popular and performance-proven production-style heads, such as the L92 and LS7 heads. They are easily identified by the engraved LSX logo on the ends.All LSX heads are made of 356- T6 aluminum and feature a 5/8" thick deck that allows plenty of room for builder-specified combinations. Additional features include:
Uses 11mm (10) and 8mm (13) head bolts (not included)
Accommodates production valvetrain components (except for Drag Race and Circle Track heads)
Includes premium beehive-type valve springs (except for Drag Race and Circle Track heads)
Extra material cast in the port areas to accommodate professional porting
Valve guides for 8mm valve stems
LSX-LS9 Cylinder Head Assembly
$1,128.80Part Number: 19213963
Brand: GM Performance Parts
SKU: 19213963
Price: $1,128.80
LSX-LS9 Cylinder Head
L92 style rectangle port design
Assembled with 2.165" titanium intake and 1.59" sodium-filled exhaust valves
15° valve angle
Minimum 4.00" bore
260cc "as-cast" intake ports, 80cc "as-cast"
Extending the performance range of the LSX platform are GM Performance Parts’ new, 6-bolt LSX cylinder heads. Many are capable of flowing more than 400 cfm and their 6-bolts-per-cylinder clamping design gives them bombproof strength. Your horsepower-building potential is nearly unlimited with LSX heads.These aluminum masterpieces of performance feature port and chamber designs based on popular and performance-proven production-style heads, such as the L92 and LS7 heads. They are easily identified by the engraved LSX logo on the ends.All LSX heads are made of 356- T6 aluminum and feature a 5/8" thick deck that allows plenty of room for builder-specified combinations. Additional features include:
L92 style rectangle port design
Assembled with 2.165" hollow stem intake and 1.590" solid stem exhaust valves
15° valve angle
260cc “as-cast” intake ports, 80cc “as-cast” exhaust ports
70cc “as-cast” combustion chambers
Minimum 4.000" bore
Uses LS3 rocker arms/LS7 bolts
LSX - LS7 Cylinder Head Assembly
$1,295.00Part Number: 19201806
Brand: GM Performance Parts
SKU: 19201806
Price: $1,295.00
LSX-LS7 Cylinder Head
6-bolt per cylinder bolt pattern
LS7 style rectangle port design
Assembled with 2.20" titanium intake and 1.61" sodium-filled exhaust valves
12° valve angle
Minimum 4.100" bore
270cc "as-cast" intake ports, 85cc "as-cast" exhaust ports
70cc "as-cast" combustion chambers
The LSX series heads feature many significant improvements over GM factory production cylinder heads making them the first choice for new LSX engine builds and power upgrades for your current LS engine family. The new 6-bolt LSX-LS7 cylinder head was developed specifically to meet the needs of racers, professional machine shops, and performance enthusiasts that require added strength, larger valve springs, and more opportunities for performance modifications that could not be performed on a stock LS7 cylinder head. The LSX-LS7 as-cast ports are modeled from the production CNC ports to provide out-of-the-box performance. So step up to the NEW Performance in LS7 cylinder heads --- the LSX-LS7 from Scoggin Dickey Parts Center!!
Extra thick 0.625” deck for increased strength and the ability to mill or angle-mill for specific engine designs and combinations
Premium 356-T6 aluminum to handle high horsepower applications with added material to the ports for professional porting
Reinforced rocker stands for increased strength and rigidity – over 0.250” extra width versus stock LS7 rocker stands
Includes additional head bolts for the 6-bolt LSX block and can also be used on production LS blocks – minimum bore size for the LSX-LS7 is 4.100”
2.200” LS7 titanium intake valves, 1.610” light-weight LS7 sodium filled exhaust valve
“As-Cast” ports can be ported for maximum air flow or used as is -- intake port flows approximately 335cfm @ 0.600” lift and the exhaust flows approximately 215cfm @ 0.600” lift
Heavy Duty PAC springs for a maximum lift of 0.650” for hydraulic roller cam applications.
Reinforced spring pockets for race applications. Spring Pockets are machined to accept up to a 1.550”OD spring
Uses stock LS7 rockers arms, LS7 intake manifold, and valve covers
10-09-2010, 02:47 PM
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Thank you very much. I guess they added the Ls9 info in the last couple of days since the last time i checked earlier this week they still only had the ls7, ls3, and l92 heads.
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10-11-2010, 02:21 PM
#10
I have a set of the lsx ls7 heads that I am putting on my ls7 build (427) I am porting mine, mostly cleanup and smoothing. I have had them flowed and I picked up some real good velocity at low lifts on up...especially on the exhaust. I got them because of the value of the great valves(I run sustained high rpms so light valves are good) and the wide spring pocket so I can go solid roller later on. I had them flowed by a famous racehead porter who mostly does drag race heads and he was really impressed with the flow numbers and the design of the ports. He estimated I would gain 30 hp over the as cast original ports. I wanted to get the flow without enlarging the ports and that was the result.
